What is the use of logical key in logical tabls in bmm

hi
can any one tell me why we have to create logical key for logical table in bmm
Thanks
sreedhar

See the links below
why we have to create logical key at levels in Hierarchies
Re: Business Model - Logical Primary key
Regards,
Sandeep
Edited by: Sandeep Saini on 15-Sep-2010 05:17

Similar Messages

What is the use of Multiple source in Logical Table under BMM Layer?

what is the use of Multiple source in Logical Table under BMM Layer?
thanks in advance

Or more generally speaking:
To create a "logical table" consisting of multiple "physical tables"...hence the names. It's the backbone of the whole BI server concept and the way the rpd handles the requests.
I.e.: how would you otherwise proceed for making an analyzable table from SAP, Teradata, Oracle and a flat file with no full change-access to all the data sources?

What is the use of Volatile Key word ??

what is the use of Volatile Key word ??
There is a primitive variable
volatile int b = 10; // this is a master copy
Locally thread A changes this int b as 5.
Locally thread B changes this int b as 20.
thread c want to use this int b.
now what c will get??
If didn't use volatile what will happen.
Regards
Dhinesh

Deenu wrote:
what is the use of Volatile Key word ??Why don't you ever reply to any of your threads? You never thank anyone for helping you, and this makes you one of the worst trolls out there.

What is the use of hot key...

what is the use of hotkey in elementary search helps...how to use this in elementary search helps...can anybody send any navigations on these ..

Creating Elementary Search Helps
Procedure
In the initial screen of the ABAP Dictionary, select object class Search help, enter the name of the search help and choose Create.
A dialog box appears in which you must select the type of search help.
Select Elementary search help and choose .
The maintenance screen for elementary search helps appears.
Enter an explanatory text in the field Short text.
You can for example find the search help at a later time using this short text.
In the Definition tab page enter the selection method of the search help.
You can enter the name of a table or a view (database view, projection view or help view) here. If you enter a table that has a text table, the name of the text table is automatically entered in the corresponding field.
Using the input help (F4 help), select fields of the selection method as parameter in the Search help parameter area. Select the fields that should be used in the dialog box for value selection or in the hit list.
If the selection method is a table that has a text table, both the fields of the table and the fields of the text table are offered in the input help.
The data element of the parameter is automatically copied from the selection method. The data element defines the output attributes and the F1 help of the parameter in the hit list and in the dialog box for value selection.
You can assign the parameter another data element. To do so, select the Mod flag. The Data element field is now ready for input. Then select a data element with the input help (F4 help). Only data elements whose data type, length and number of decimal places is the same as those of the previous data element can be assigned.
This removes the link between the data element of the search help parameter and the data element of the selection method field having the same name. If you cancel the Mod flag, the data element of the assigned table field is used again.
Define the attributes of the search help parameters.
Select the IMP flag if it is an import parameter. Select the EXP flag if it is an export parameter.
You can define the dialog for the input help with the fields LPos, SPos and SDis. Enter the parameter position in the hit list in LPos. If you enter nothing or the value 0 here, the parameter is not displayed in the hit list.
Enter the parameter position in the dialog box for value selection in SPos. If you enter nothing or the value 0 here, the parameter is not displayed in the dialog box for value selection.
Set the SDis flag if the parameter should be a pure display field in the dialog box for value selection. The user is thus informed that the contents of the parameter restrict the value, but he cannot change this restriction. This makes sense for example when the parameter is an import parameter or if it has a default value.
You can assign the parameter a default value in the Default value field.
Select the dialog type of the search help.
The dialog type defines how the hit list is displayed in the input help.
Save your entries.
A dialog box appears in which you have to assign the search help a development class.
Choose .
Do not forget to link the search help to a screen field. The search help attachment is not part of the search help definition; it is part of the object definition to which the search help is attached.
Result
The search help is activated. You can find information about the activation flow in the activation log, which you can display with Utilities ® Activation log. If errors occurred during activation, the activation log is automatically displayed.
Other Options
Assign a hot key: If the search help is to be accessed with a hot key, you must enter a one-place ID in the Hot key field. All the elementary search helps contained in a collective search help should have different short cuts.
Assign a search help exit: In exceptions, you might have to change the standard flow defined by the search help with a search help exit. In this case enter the name of the search help exit in the corresponding field.
Test the search help: You can test the flow of an input help defined by the elementary search help with . A dialog box appears in which you can simulate the behavior of the search help under different conditions. You can obtain information about the options provided in this window with .
See also:
Example for Search Helps
Each customer of a carrier (see Flight Model) or of a travel agency has a customer number. You want to find a search option for this customer number.
The user must be offered two different search paths.
The user should be able to search for the customer number using the customer data, such as the name and address.
The user should be able to search for the customer number using existing customer bookings.
You can provide the required search option by creating a collective search help SCUSTOM. Two elementary search helps SCUSTOM_NAME (for searching with the customer data) and SCUSTOM_BOOK (for searching with the existing bookings) are created for the actual search paths. These elementary search helps are included in the collective search help.
Elementary Search Help SCUSTOM_NAME
This elementary search help should enable you to search for the customer number using the name and address (street, city, country). All this data is contained in table SCUSTOM. Table SCUSTOM must therefore be selected as the selection method of the elementary search help.
You now have to decide which fields of the selection method are needed for the input help process. These are the fields that should appear either in the dialog box for restricting values or in the hit list.
In the dialog box for restricting values, the user should be able to restrict values with the customers name and address, i.e. the fields for the street, city and country. These fields as well as the customers number (the information to be found must always be in the hit list) should appear in the hit list. The fields ID, NAME, STREET, CITY and COUNTRY of table SCUSTOM must be included in the search help as parameters.
The parameter ID is declared to be an import parameter. A pattern entered in the corresponding field of a screen template can therefore be used directly for the value selection. Restrictions for the other parameters of the search help must be entered in the dialog box for value selection.
All the parameters of the search help are declared to be export parameters. As a result, all the parameters of the hit list can be returned to the screen template if the corresponding fields are available there.
Elementary Search Help SCUSTOM_BOOK
This elementary search help should enable you to search for the customer number using existing customer bookings. The flight data for the booking (flight number, date of flight, city of departure, city of arrival) and the name of the customer should be used for the search here. This data is distributed on the tables SBOOK (bookings), SCUSTOM (name) and SPFLI (cities of departure and arrival). The following graphic shows the relationship between the relevant tables, that is the existing foreign key relationships.
In this case a database view SCUS_BOOK must be created on these three tables (see Example for Views) as selection method. The tables in the view (join) are linked as defined by the existing foreign key relationships (see Foreign Key Relationship and Join Condition).
In the dialog box for restricting values, the user should be able to restrict the search for booking data with the carrier ID, customer name, city of departure and city of arrival The flight date and of course the customer number should also be displayed in the hit list. Fields CARRID, FLDATE, CUSTOMID, NAME, CITYFROM and CITYTO of view SCUS_BOOK must be included in the elementary search help as parameters of the search help.
The parameter CUSTOMID is declared to be an import parameter. All the parameters of the search help are export parameters.
Collective Search Help SCUSTOM
The two elementary search helps are now included in the collective search help. You must now allocate the parameters of the elementary search helps to the parameters of the collective search help.
The parameter ID of the collective search help is marked as an import parameter. All the parameters are export parameters. The values can thus be copied from the hit list to the screen template.
Attaching the Search Help
In order to be able to use the search help SCUSTOM in screen templates, the attachment of the search help (see Attaching Search Helps with Screen Fields) must be defined.
Attaching to the Check Table SCUSTOM
The search help should be available for all the fields that are checked against table SCUSTOM. The search help therefore must be attached to table SCUSTOM. The search help parameters must therefore be assigned to the key fields of table SCUSTOM.
The parameter ID of search help SCUSTOM is here assigned to the field ID of table SCUSTOM in this field assignment. No assignment is possible for all other parameters of the search help (NAME, CITY and COUNTRY) since table SCUSTOM does not contain this information as key fields.
Attaching to a Field of Table SCUSTOM
In order that the search help is available when the field SCUSTOM-ID is directly copied to the input template, you have to attach the search help to this field.
With this type of attachment, all the parameters of the search help can be assigned to the corresponding fields of the table.
Structure of an Elementary Search Help
An elementary search help defines the standard flow of an input help. You can define the following components of this flow in the search help:
where does the data displayed in the hit list come from (selection method)
what information should be displayed in the dialog box for value selection and in the hit list (search help parameters)
what field contents can be taken into account for hit list selections and which values in the hit list can be returned to the screen fields (search help parameters)
what dialog steps should be executed in the input help (dialog behavior)
Selection Method
The possible input values displayed for a field in the hit list are determined at runtime by database selection.
If all the data required in the hit list comes from one single table, you only have to select this table (or a projection view on this table) as selection method. If there is a text table for the table, its fields are also available in the input help. A table entry is linked with the corresponding text by the existing foreign key.
If the data needed in the hit list comes from more than one table, you must link these tables with a view (database view or help view). This view must be defined as the selection method.
If the underlying tables are client-specific, the client field must be contained in the view. Otherwise selection for the input help would be for all clients.
Search Help Parameters
A search help has an interface consisting of parameters. These parameters define the fields of the selection method that should be used in the input help.
A parameter of the search help must correspond to each field in the dialog box for value selection and to each field of the hit list. The parameters are copied from the corresponding selection method, that is they always have the same name as the corresponding field of the selection method.
If the search is restricted with a parameter of the search help, this is used in the data selection for formulating a WHERE condition for the field of the selection method with the same name. Vice versa, the parameters of the search help are assigned the contents of the fields of the selection method having the same name.
The search help should not contain any parameters for the clients. In the input help, selection is automatically in the logon client of the user.
A data element must be assigned to each search help parameter, that is a type is always defined for the search help parameters.
A search help can contain further parameters that do not correspond to any field of the selection method. This is normally only necessary if the standard flow of the input help described by the search help still has to be modified by with a search help exit.
Import and Export Parameters
When an input help is called, the entries that the user already made in the input template are taken into consideration. For example, if a user calls the input help for the flight number and already specified the carrier, of course only the numbers of flights of this carrier should be offered.
On the other hand, if the user selects one row of the hit list, more than one field of the input template might have to be filled with data from the selected row of the hit list. For example, if the flight number is obtained from the hit list, the city of departure and the destination should also be returned in the screen template.
The interface of a search help defines the context data that can be used in the input help and the data that can be returned in the input template.
A parameter of a search help can be classified as:
Import parameters: Parameters with which context information from the processed input template (screen) may be copied to the help process.
Export parameters: Parameters with which values from the hit list may be returned to the input template.
A parameter can simultaneously be an input and an export parameter. A search help can also contain parameters that are neither import nor export parameters. Such parameters could be required for the internal input help process, for example.
When you attach a search help, you must define where the import parameters of the search help get their values from and the fields in which the contents of the export parameters are returned. See also Value Transport for Input Helps.
Description of the Online Behavior
The online behavior defines the steps executed in the input help process and the structure of the hit list and dialog box for value selection.
The dialog type defines whether or not the dialog box for value selection should be displayed. If you want to skip the dialog box for value selection, the hit list is displayed directly after calling the input help.
When you define an elementary search help, you can define how the dialog box for value selection and the hit list should look. For example, you can define the position of a parameter in the dialog box for value selection here. The column position in which the values of a parameter are displayed in the hit list can also be defined here
Please reward points..
regards

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A screenshot from the Color User Manual: http://dl.dropbox.com/u/19589/Color%20Key%20Blur.png

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What is the use of keyword SCAN ABAP-SOURCE

Hello experts,
what is the use of scan abap-source. please explain. what is tokens, statements, levels in that.

Hi
SCAN
This statement is for internal use only.
It cannot be used in application programs.
SCAN ABAP-SOURCE itab1 ...TOKENS INTO itab2
 ...STATEMENTS INTO itab3.
Parts marked with " ..." are interchangeable
Addition 1
... FROM n1
Addition 2
... TO n2
Breaks down the source code table itab1 into tokens not from start to finish, but only from line n1 to line n2.
The additions FROM n1 and TO n2 must, in this order, follow the specification of the source code table itab1.
When using the start specification n1, use the addition WITHOUT TRMAC to ensure that there are no unnecessary database accesses to the table TRMAC.
The end specification n2 is treated as "soft", i.e. a statement that begins on a line <= n2, but ends only on a line > n2, is returned completely.
If the end specification n2 is split in a chain statement, only the split part up to the next comma is returned completely, not the entire chain statement up to the next period.
Negative line specifications are not allowed and result in a runtime error.
A line specification of 0 amounts essentially to no specification.
If n1 number of lines in source code table, the scanner is not called (SY-SUBRC = 2).
If n1 > n2 and n2 > 0, the scanner is not called (SY-SUBRC = 2).

Addition 3
... KEYWORDS FROM itab4
Does not return all statements, only those specified in the key word table itab4.
If the key word table is empty (i.e. it contains 0 lines), all the statements are selected.
The lines of the key word table are treated as a character field.
To select a Native-SQL-statement or a macro definition, you can specify the pseudo key words EXEC_SQL or DEFINE_MACRO. It makes no difference whether the statements EXEC or DEFINE occur as well. Native SQL statements and macro definitions are returned as one statement (of type E or M even if the expansion of a macro definition results in more than one statement.
If the key word table contains a blank line, blank statements are also selected.
Addition 4
... LEVELS INTO itab5
Stores details about each edited source code unit (source code table itab1 itself, expanded include-programs, expanded macro definitions) in the level table itab5.
Specification of a level table makes sense only with the addition WITH INCLUDES.
The level table itab5 must have the structure SLEVEL.
The fields of the structure SLEVEL - and consequently the columns of the level table itab5 have the following meaning:
TYPE
Type of source code unit with the following possible values:
P (Program)
D (Internal DEFINE macro)
R (Macro from table TRMAC)
NAME
Name of source code unit (name of include program, macro name)
DEPTH
Current nesting depth of source code unit (>= 1)
LEVEL
Index of superior (i.e. including or calling) source code unit in the level table (>= 1, if DEPTH >= 2, otherwise 0)
STMNT
Index of superior (i.e. including or calling) statement in the statement table (>= 1, if DEPTH >= 2, otherwise 0)
FROM
Index of first statement of source code unit in the statement table (>= 1)
TO
Index of last statement of source code unit in the statement table (>= 1)
If the source code unit contains include programs or macro calls, the line range [ FROM, TO] in the statement table also covers the statements in subordinate source code units.
Addition 5
... STRUCTURES INTO itab6
Details of the construction of the source text table are given in the structure table itab6.
The structure table itab6 must have the structure SSTRUC.
The fields in SSTRUC (which are also the columns of structure table itab6) have the following meanings:
TYPE
Type of the structure with possible values:
P (Beginning of the source code)
R (Subroutine)
M (Macro, EXEC SQL)
I (Loop)
A (Case distinction)
C (Condition in a case distinction)
J (Goto command)
D (Structured declaration)
E (Event)
S (Follow-on from simple structured statement)
STMNT_TYPE
The statement type of the beginning of the structure. The values are listed in the type pool SCAN in structure SCAN_STRUC_STMNT_TYPE.
KEY_START
Flags whether the start of the structure is described semantically ('X' if there is a special statement, otherwise ' ').
KEY_END
Flags whether the end of the structure is described semantically ('X' if there is a special statement, otherwise blank).
STMNT_FROM
Index of the first statement of the structure in the statement table itab3.
STMNT_TO
Index of the last statement of the structure in the statement table itab3.
Index of the first substructure of the structure in structure table itab6.
STRUC_TO
Index of the last substructure of the structure in structure table itab6.
BACK
Index of the structure in the structure table itab6 that contains the structure as a substructure (0 if the structure is the root structure of a structure tree).
Addition 6
... OVERFLOW INTO c1
The addition is only allowed and required if the token table itab2 has the structure STOKEN or STOKEX.
If a token is too large to be stored in the token table in the field STR, it is placed in the overflow area c1. The offset of the token in the overflow area then lies in the token table in the field OFF1.
Addition 7
... WITH ANALYSIS
Breaks down each token t = a+b(c) according to the logic of the RSYN key word >ANALY into its three components a, b and c.
Offset and length of components a, b and c are stored in the fields LEN1, OFF2, LEN2, OFF3, and LEN3 in the token table. (The offset of OFF1 is always 0 and therefore not required.)
If you specify the addition WITH ANALYSIS, the token table itab2 must have the structure STOKESX, so that the fields LEN1, OFF2, LEN2, OFF3 and LEN3 are available.
If the token table has the structure STOKEX, you must consider the following:
If the whole token exists in the token table, the offset specifications are relative to the token start. If the token is in the overflow area c1, the offset specifications are relative to the start of the overflow area.
Addition 8
... WITH COMMENTS
Returns comments also, with each individual comment representing a token. The system additionally stores entries for each full block of comments in the table itab3, differentiating between comments that occur within statements and those that occur at program level. In itab3, an entry for a comment within a statement always comes before the statement containing the comment.
Example
Look at the following program fragment. The preceding numbers are the indexes of the tokens.
1 * An example *
2 * with scattered comments
6 MOVE
3 * Inserted comment 1
7 X
4 * Inserted comment 2
8 TO
9 Y
5 * Inserted comment 3
SCAN then enters the following values for the components TYPE, FROM and TO (in this order from left to right) into itab3.
'P' 1 2
'S' 3 5
'K' 6 9
If the addition ... WITH COMMENTS is used, the table itab2 must have the line type STOKES or STOKESX.
Addition 9
... WITH INCLUDES
Also breaks down subordinate source code units (included programs, called macros) into tokens.
You should normally combine the addition WITH INCLUDES with the addition LEVELS INTO itab5.
If (at least) one included program does not exist, SY-SUBRC is set to 1 and the relevant INCLUDE statement is flagged in the statement table itab3 by the statement type J (instead of I), but the breakdown process continues. The level table itab5 contains no entry for include-programs that do not exist.
If you combine WITH INCLUDES with WITHOUT TRMAC , TRMAC-Macros are not expanded because the system does not recognize them as subordinate source code units.
When macro calls are expanded, no position specifications are available. The corresponding fields in the token table itab2 and the statement table itab3 are then set to 0.
Addition 10
... WITH TYPE-POOLS
This addition has the same effect as the WITH INCLUDES addition, except that with the former include programs belonging to type groups are broken down into tokens.
Addition 11
.. WITH LIST TOKENIZATION
Tokens of the form (a1, a2, a3) are not returned as tokens but broken down into the elementary components.
Addition 12
... WITHOUT TRMAC
If a statement begins neither with an ABAP/4 key word nor with a DEFINE macro, the system does not check whether this is a TRMAC macro, but assumes an unknown statement. (Unknown statements are flagged in the statement table itab3 with a U in the field TYPE.)
To avoid unnecessary database accesses to the table TRMAC, you should use the addition WITHOUT TRMAC whenever you assume that the source code to be scanned contains unknown statements. Unknown statements are particularly likely to occur if you use the addition FROM n1, because the scanner does not start at the beginning of the source code, but from a specified point.
If you use WITHOUT TRMAC with WITH INCLUDES, TRMAC macros are not expanded because the system does not recognize them as subordinate source code units.
Addition 13
... PROGRAM FROM c2
Addition 14
... INCLUDE INTO c3
Addition 15
... MESSAGE INTO c4
Addition 16
... WORD INTO c5
Addition 17
... LINE INTO n3
Addition 18
... OFFSET INTO n4
The above additions have the same meaning as those for the
SYNTAX-CHECK: statement: c2 is an input field for a program name to be assigned to the source code, while the fields c3, c4, c5, n3 and n4 are output fields in case an error occurs.
To be able to analyze errors without modifying programs, use the additions INCLUDE, MESSAGE, WORD, LINE and OFFSET. These provide information about the errors which have occurred.
Variant 2
SCAN AND CHECK ABAP-SOURCE itab1 ...RESULT INTO itab2.
Parts marked with " ..." are interchangeable
Extras:
1. ... PROGRAM FROM c1 2. ... INCLUDE INTO c2
3. ... MESSAGE INTO c3
4. ... WORD INTO c4
5. ... LINE INTO n1
6. ... OFFSET INTO n2
The syntax of the program in table itab1 is checked. During the check, all of the information from the program, such as statement structures, statements, tokens, data objects, types and do on are placed into the result field. This field must have the type SYSCH_RESULT, which is defined in type group SYSCH. You must therefore declare type group SYSCH in your ABAP-program using a TYPE-POOLS statement.
&ABAP_ADDITION _1&
... PROGRAM FROM c1
&ABAP_ADDITION _2&
... INCLUDE INTO c1
&ABAP_ADDITION _3&
... MESSAGE INTO c3
&ABAP_ADDITION _4&
... WORD INTO c4
&ABAP_ADDITION _5&
... LINE INTO n1
&ABAP_ADDITION _6&
... OFFSET INTO n2
The above additions have the same effect as the corresponding additions in the statement SYNTAX-CHECK: c1 is an input field for a program name to be assigned to the source code, the fields c2, c3, c4, n1 and n2 are output fields, used when errors occur.
To enable you to analyze errors without having to modify the program, you should specify the INCLUDE, MESSAGE, WORD, LINE and OFFSET additions for the information about the error that occurred.
Reward if usefull

What is the use of change pointer concept in ale?

what is the use of change pointer concept in ale?
Edited by: Alvaro Tejada Galindo on Feb 6, 2008 5:10 PM

ALE Architecture:
It consists of an Outbound process, an Inbound process, and an Exception Handling process.
Outbound Process:
ALE Outbound Process in SAP sends data to one or more SAP Systems. It involves four steps.
1. Identify the need of IDoc: This step starts upon creating a application document, can relate to a change to a master data object.
2. Generate the Master IDoc: The document or master data to be sent is read from the database and formatted into an IDoc format. This IDoc is called as a Master IDoc.
3. Generate the Communication IDoc: The ALE Service layer generates a separate IDoc from the Master IDoc for each recipient who is interested in the data. Separate IDocs are generated because each recipient might demand a different version or a subset of the Master IDoc. These recipient-specific IDocs are called Communication IDocs and are stored in the database.
4. Deliver the Communication IDoc: The IDoc is delivered to the recipients using an asynchronous communication method. This allows the sending system to continue its processing without having to wait for the destination system to receiver or process the IDoc.
Inbound Process:
The inbound process receives an IDoc and creates a document in the system.
1. Store the IDoc in the database: The IDoc is received from the sending system and stored in the database. Then the IDoc goes through a basic integrity check and syntax check.
2. Invoke the Posting Module: The control information in the IDoc and configuration tables are read to determine the posting program. The IDoc is then transferred to its posting program.
3. Create the Document: The posting program reads the IDoc data and then creates a document in the system. The results are logged in the IDoc.
Over view of IDocs:
IDoc is a container that is used to exchange data between any two processes. The document represented in an IDoc is independent of the complex structure SAP uses to store application data. This type of flexibility enables SAP to rearrange its internal structure without affecting the existing interface.
IDoc interface represents an IDoc Type or IDoc data. IDoc Type represents IDocs definition and IDoc Data is an instance of the IDoc Type.
IDoc Types:
IDoc type structure can consist of several segments, and each segment can consist of several data fields. The IDoc structure defines the syntax of the data by specifying a list of permitted segments and arrangement of the segments. Segments define a set of fields and their format.
An IDoc is an instance of an IDoc Type and consists of three types of records.
i. One Control record: each IDoc has only one control record. The control record contains all the control information about an IDoc, including the IDoc number, the sender and recipient information, and information such as the message type it represents and IDoc type. The control record structure is same for all IDocs.
ii. One or Many Data records: An IDoc can have multiple data records, as defined by the IDoc structure. Segments translate into data records, which store application data, such as purchase order header information and purchase order detail lines.
iii. One or Many Status records: An IDoc can have multiple status records. Status record helps to determine whether an IDoc has any error.
Message in IDoc Type:
A Message represents a specific type of document transmitted between two partners.
Outbound Process in IDocs:
Outbound process used the following components to generate an IDoc. A customer model, and IDoc structure, selection programs, filter objects, conversion rules, a port definition, an RFC destination, a partner profile, service programs, and configuration tables.
The Customer Model:
A customer model is used to model a distribution scenario. In a customer model, you identify the systems involved in a distribution scenario and the message exchanged between the systems.
Message control:
Message control is a cross application technology used in pricing, account determination, material determination, and output determination. The output determination technique of Message control triggers the ALE for a business document. Message control separates the logic of generating IDocs from the application logic.
Change Pointers:
The change pointers technique is based on the change document technique, which tracks changes made to key documents in SAP, such as the material master, customer master and sales order.
Changes made to a document are recorded in the change document header table CDHDR, and additional change pointers are written in the BDCP table for the changes relevant to ALE.
IDoc Structure:
A message is defined for data that is exchanged between two systems. The message type is based on one or more IDoc structures.
Selection Program:
Is typically implemented as function modules, are designed to extract application data and create a master IDoc. A selection program exists for each message type. A selection programs design depends on the triggering mechanism used in the process.
Filter Objects;
Filter Objects remove unwanted data for each recipient of the data basing on the recipients requirement.
Port Definition:
A port is used in an outbound process to define the medium in which documents are transferred to the destination system. ALE used a Transactional RFC port, which transfers data in memory buffers.
RFC Destination:
The RFC destination is a logical name used to define the characteristics of a communication link to a remote system on which a function needs to be executed.
Partner Profile:
A partner profile specifies the components used in an outbound process(logical name of the remote SAP system, IDoc Type, message type, TRFC port), an IDocs packet size, the mode in which the process sends an IDoc (batch versus immediate), and the person to be notified in case of error.
Service Programs and Configuration Tables:
The outbound process, being asynchronous, is essentially a sequence of several processes that work together. SAP provides service programs and configuration tables to link these programs and provide customizing options for an outbound process.
Creation of IDoc:
Basic Type:
Basic IDoc type defines the structure and format of the business document that is to be exchanged between two systems.
Segments:
Segments form the basic building blocks of an IDoc type and are used to store the actual datta. A segment type is the name of a segment and is independent of the SAP elease. A segment definition is the release-specific name of a segment.
Steps in creating Segments:
T.Code WE31
Enter the name for your segment type and click on the create icon.
Type the Short text.
Enter the variable names and data elements.
Save and Go back.
Go to Edit -> Set Release.
Repeat the steps to create more segments.
IDOC TYPE:
Business data is exchanged with an external system using the IDoc Interface.
IDoc types (Special Structures) An IDoc type is defined through its permitted segments. Segments can be dependent on each other (parent and child segments). The IDoc interface can check for each IDoc whether thhe segments contained are compatible with thhe definitiion of its type. This systax check is activated or deactivated in the Partner Profiles.
Steps in creating IDoc Type:
T.Code WE30 to create IDoc Type.
Enter the Object Name, Select Basic Type and click Create Icon
Select the create new option and enter a description for your basic IDOC type and press enter
Select the IDoc name and click Create icon
The system prompts us to enter a segment type and its attributes
Choose the appropriate values and press enter
The system transfers the name of the segment type to the IDoc editor.
Follow these steps to add more number of segments to Parent or as Parent-child relation.
Save it and go back.
Go to Edit -> Set Release.
Message Type:
Steps in Creating Message Type:
T.Code WE81.
change the details from Display mode to Change mode
After selection, the system will give this message "The table is cross client (See help for further info)". Press enter.
Click New Entries to create new Message Type.
Fill details
Save it and go back.
Assign Message Type to IDoc Type:
T.Code WE82
Change the details from Display mode to change mode.
After selection, the system will give this message "The table is cross client (See help for further info)". Press enter.
Click New Entries to create new Message Type.
Fill details
Save it and go back.
<REMOVED BY MODERATOR>
Edited by: Alvaro Tejada Galindo on Feb 6, 2008 5:10 PM

What is the use for lock object and how to use the lock objects

Hi Guru's,
I am new to ABAP .Can you please clarify the that what is the use of lock object and how to use the loct object .what is use of the Deque & Enque function modules .

hi ,
below are some minfo about lock objects :
Lock Objects
These types of objects are used for locking the access to database records in table. This mechanism is used to enforce data integrity that is two users cannot update the same data at the same time. With lock objects you can lock table-field or whole table.
In a system where many users can access the same data, it becomes necessary to control the access to the data. In R/3 system this access control is built-in on database tables. Developers can also lock objects over table records.
To lock an object you need to call standard functions, which are automatically generated while defining the lock object in ABAP/4 dictionary. This locking system is independent of the locking mechanism used by the R/3 system. This mechanism also defines LUW i.e. Logical Unit of Work. Whenever an object is locked, either by in built locking mechanism or by function modules, it creates corresponding entry in global system table i.e. table is locked. The system automatically releases the lock at the end of transaction. The LUW starts when a lock entry is created in the system table and ends when the lock is released.
Creating Lock Objects
Lock object is an aggregated dictionary object and can be defined by using the following steps:
o From initial data dictionary screen, enter the name for the object, Click Lock object radiobutton and then click on Create. The system displays a dialog box for Maintain Lock Objects screen
o Enter short text as usual and the name for primary table.
-Save
-Select Tables option
From this screen you can:
Select secondary tables, if any, linked by foreign key relationship.
Fields for the lock objects. This option allows you to select fields for objects (R/3 system allows locking up to record level). Lock object argument are not selected by user but are imposed by the system and includes all the primary keys for the table.
1) Exclusive lock: The locked data can only be displayed or edited by a single user. A request for another exclusive lock or for a shared lock is rejected.
2) Shared lock: More than one user can access the locked data at the same time in display mode. A request for another shared lock is accepted, even if it comes from another user. An exclusive lock is rejected.
3) Exclusive but not cumulative: Exclusive locks can be requested several times from the same transaction and are processed successively. In contrast, exclusive but not cumulative locks can be called only once from the same transaction. All other lock requests are rejected.
Also, last but not the least, locking the object is logical (locking with any enqueue ) .so, you have to use the lock object while trying to access from second program .
reward if helpful ,
Regards,
Ranjita

In the new Pages 5.0, what is the page break shortcut key. I cannot find the key as indicated on the drop down menu.

in the new Pages 5.0, what is the page break shortcut key (it used to be the Fn + enter). I cannot find the (new) key as indicated on the drop down menu. Please help.

Hi Bruce and fruhulda,
ok, I found the keyboard viewer, it only shows the traditional symbol 'return'. something like a sideway u-turn continued with the arrow under. This is the Canadian or US keyboard.
btw thanks for your suggestion.

What is the use of additon in up to 1 rows in SELECT statement

Hi All,
         What is the use of up to 1 rows in select statement.
for example
SELECT kostl
      FROM pa0001
      INTO y_lv_kostl UP TO 1 ROWS
      WHERE pernr EQ pernr
      AND endda GE sy-datum.
    ENDSELECT.
I'm unable to get in wat situations we hav to add up to 1 rows
please help me out...
Thanks,
santosh.

Hi,
Use "select up to 1 rows" only if you are sure that all the records returned will have the same value for the field(s) you are interested in. If not, you will be reading only the first record which matches the criteria, but may be the second or the third record has the value you are looking for.
The System test result showed that the variant Single * takes less time than Up to 1 rows as there is an additional level for COUNT STOP KEY for SELECT ENDSELECT UP TO 1 ROWS.
The 'SELECT .... UP TO 1 ROWS' statement is subtly different. The database selects all of the relevant records that are defined by the WHERE clause, applies any aggregate, ordering or grouping functions to them and then returns the first record of the result set.
Regards,
Bhaskar

What is the use of commit work and rollback work

hao friends,
what is the use of commitwork and rollback work where we can use these open sql statements .
thanks,
anji

hi all
i have written the following code in my development system to change the records of my database.
SELECT * FROM zyikostl INTO TABLE itab.
LOOP AT itab INTO wtab.
    tabix = sy-tabix.
    DO.
      READ TABLE itab INTO ktab WITH KEY kostl_alt = wtab-kostl_neu.
      IF sy-subrc = 0.
        wtab-kostl_neu = ktab-kostl_neu.
        MODIFY itab FROM wtab INDEX tabix.
        CONTINUE.
      ELSE.
        EXIT.
      ENDIF.
    ENDDO.
ENDLOOP.
MODIFY zyikostl FROM TABLE itab.
In the development system i have only few records its working fine,but when it is been moved to test system there are 2500 records in the database so the report is taking much time(more than 5 hours )
i sthere any solution for this ....
thanks,
vaasu.

What is the use of end routine in bi 7.0

hi friends,
what is the use of end routine in bi 7.0. what scenerio we use end routine.
Thanking u
suneel.

hi Suneel,
check
http://help.sap.com/saphelp_nw70/helpdata/en/e3/732c42be6fde2ce10000000a1550b0/frameset.htm
End Routine
An end routine is a routine with a table in the target structure format as input and output parameters. You can use an end routine to postprocess data after transformation on a package-by-package basis. For example, you can delete records that are not to be updated, or perform data checks.
If the target of the transformation is a DataStore object, key figures are updated by default with the aggregation behavior Overwrite (MOVE). You have to use a dummy rule to override this.
hope this helps.

What is the use of Host in Technical system

Hi experts,
While creating Technical sytem what is the use of creating Host.
while creating Business System we create Logical System.When we are creating for Sap system then there we give client logical sytem name,but while creating for third party systems what is the use of it.....
while creating Technical system and Business system v have 4 radio buttons
Web As ABAP
Web as Java
Standalone
thirdParty
what is the use of Standalone when and in which senario we use this Standalone.
Note:valuable anser will be rewarded.
Regards,
Phani

Hi
1. Third Party: Can be any Tech System. For example you want to send a xml message from a file adapter residing on your PC. You can define your PC as a 3rd party Tech/Business System.
2. StandAlone Java: WEBAS640 has got Basis and Java Stacks. If you installed only the standalone java Stack on a server, then you define a standalone java tech system.
Regards
krishna

What is the use of initial value in a database table?

Hi can anyone help me in knowing what is the use of initial value which is present besides primary key while creating a table?

Initial Value:
Indicator that NOT NULL is forced for this field
Use
Select this flag if a field to be inserted in the database is to be filled with initial values. The initial value used depends on the data type of the field.
Please note that fields in the database for which the this flag is not set can also be filled with initial values.
When you create a table, all fields of the table can be defined as NOT NULL and filled with an initial value. The same applies when converting the table. Only when new fields are added or inserted, are these filled with initial values. An exception is key fields. These are always filled automatically with initial values.
Restrictions and notes:
The initial value cannot be set for fields of data types LCHR, LRAW, and RAW. If the field length is greater than 32, the initial flag cannot be set for fields of data type NUMC.
If a new field is inserted in the table and the initial flag is set, the complete table is scanned on activation and an UPDATE is made to the new field. This can be very time-consuming.
If the initial flag is set for an included structure, this means that the attributes from the structure are transferred. That is, exactly those fields which are marked as initial in the definition have this attribute in the table as well.
hope it helps,
Saipriya

What is the use of logical key in logical tabls in bmm

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