Difference between Navigation attribute and normal attribute

Hi Experts,
What is the use of Navigation attribute in place of normal attribute? When we need to use navigation attribute instead of normal attribute?
Thanks!
Sapna

Hi Sapna,
Please try to search...this has been discussed many many times.

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Hi,
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Cehck This...
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Ex:
If I use value attribute, at the time of value change listener the component is not showing the result in the component but when I use Binding attribute it is happening automatically. So I want to know how the binding attribute is working.
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JNaveen wrote:
If I use value attribute, at the time of value change listener the component is not showing the result in the component but when I use Binding attribute it is happening automatically. So I want to know how the binding attribute is working.You need to learn about the JSF lifecycle. The ValueChangeEvent is invoked after conversion and validation in the 3rd phase, while the model values are updated in the 4th phase. In the valueChangeListener method you normally use ValueChangeEvent#getNewValue() to get the new value after the change.
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[http://balusc.blogspot.com/2006/09/debug-jsf-lifecycle.html].
[http://jcp.org/aboutJava/communityprocess/final/jsr252/index.html] (pick 1st download).

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Hi Varda ,
RDA is Real Time Data Acquisition . In this We can retrieve Live data . While using Normal DTP We can t pull live data
For example :- Today We have Create a 50 orders . This 50 order information pulled after completion of sales order creation . we can t see live . But RDA process pulled the data at the point of sales order creation it self ,It support only Stranded DSO .It will use Some industries like FMCG.Retail,banking sector they want to know current data information from BI Side then RDA.
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http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/00db64ee-82f0-2b10-01b0-fe9543dc227e?quicklink=index&overridelayout=true.
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http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/20f704bd-b6e8-2c10-569e-d726784388ce?quicklink=index&overridelayout=true
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http://www.bluemarlinsys.com/
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The difference between FIELD-SYMBOL and normal DATA TYPE

Dear experts,
Please see the example below, both are output the same result.
DATA: EXTERNAL_RECORD(4000),
 POSITION TYPE I,
 LENGTH TYPE N,
 ENTRY TYPE STRING.
EXTERNAL_RECORD = '0005Smith0007Edwards0005Young'.
DO.
LENGTH = EXTERNAL_RECORD+POSITION(4).
IF LENGTH = 0.
 EXIT.
ENDIF.
ADD 4 TO POSITION.
MOVE EXTERNAL_RECORD+POSITION(LENGTH) TO ENTRY.
WRITE ENTRY.
ADD LENGTH TO POSITION.
IF POSITION >= 4000.
 EXIT.
ENDIF.
ENDDO.
--OR It can be written as--
DATA: EXTERNAL_RECORD(4000),
 POSITION TYPE I,
 LENGTH TYPE N.
FIELD-SYMBOLS <ENTRY>.
EXTERNAL_RECORD = '0005Smith0007Edwards0005Young'.
DO.
LENGTH = EXTERNAL_RECORD+POSITION(4).
IF LENGTH = 0.
 EXIT.
ENDIF.
ADD 4 TO POSITION.
ASSIGN EXTERNAL_RECORD+POSITION(LENGTH) TO <ENTRY>.
WRITE <ENTRY>.
ADD LENGTH TO POSITION.
IF POSITION >= 4000.
 EXIT.
ENDIF.
ENDDO.
Is there any special circumstances we need to use FIELD-SYMBOL?
Why is FIELD-SYMBOL is introduce in the first place?
Kindly advice with example.
Thanks in advance for those who can help me on this.

HI,
You can use field symbols to make the program more dynamic. In this example the name of a table control is substituted by a field symbol. Thus you cal call the form with any internal table, using the name of the table control as a parameter.
Example
form insert_row
using p_tc_name.
field-symbols <tc> type cxtab_control. "Table control
assign (p_tc_name) to <tc>.
insert 100 lines in table control
<tc>-lines = 100.
Field symbols allow you to:
** Assign an alias to a data object(for example, a shortened
 name for data objects structured through several hierarchies
 - <fs>-f instead of rec1-rec2-rec3-f)
** Set the offset and length for a string variably at runtime
** Set a pointer to a data object that you determine at runtime (dynamic ASSIGN)
** Adopt or change the type of a field dynamically at runtime
** Access components of a structure
** (from Release 4.5A) Point to lines of an internal table
 (process internal tables without a separate work area)
Field symbols in ABAP are similar to pointers in other programming
languages. However, pointers (as used in PASCAL or C) differ from ABAP
field symbols in their reference syntax.
The statement ASSIGN f to <fs> assigns the field f to field
symbol <fs>. The field symbol <fs> then "points" to the
contents of field f at runtime. This means that all changes to the
contents of f are visible in <fs> and vice versa. You declare
the field symbol <fs> using the statement FIELD-SYMBOLS: <fs>.
Reference syntax
Programming languages such as PASCAL and C use a dereferencing symbol
to indicate the difference between a reference and the object to which
it refers; so PASCAL would use p^ for a pointer instead of p, C would
use *p instead of p. ABAP does not have any such dereferencing symbol.
** In PASCAL or C, if you assign a pointer p1 to a pointer p2,
you force p1 to point to the object to which p2 refers (reference semantics).
** In ABAP, if you assign a field symbol <fs1> to a field
symbol <fs2>, <fs1> takes the value of the data object to
which <fs2> refers (value semantics).
** Field symbols in ABAP are always dereferenced, that is,
they always access the referenced data object. If you want to
change the reference yourself in ABAP, you can use the ASSIGN statement
to assign field symbol <fs1> to field symbol <fs2>.
Using field symbols
You declare field symbols using the FIELD-SYMBOLS statement.
They may be declared either with or without a specific type.
At runtime you assign a field to the field symbol using the ASSIGN
statement. All of the operations on the field symbol act on the field
assigned to it.
When you assign a field to an untyped field symbol, the field symbol
adopts the type of the field. If, on the other hand, you want to assign
a field to a typed field symbol, the type of the field and that of the
field symbol must be compatible.
A field symbol can point to any data object and from Release 4.5A,
they can also point to lines of internal tables.
The brackets (<>) are part of the syntax.
Use the expression <fs> IS ASSIGNED to find out whether the field
symbol <fs> is assigned to a field.
The statement UNASSIGN <fs> sets the field symbol <fs> so
that it points to nothing. The logical expression <fs>
IS ASSIGNED is then false. The corresponding negative expression
is IF NOT <fs> IS ASSIGNED.
An unassigned field symbol <fs> behaves as a constant with
type C(1) and initial value SPACE.
MOVE <fs>
TO dest Transfers the initial value SPACE to the variable dest
MOVE 'A' to <fs>
Not possible, since <fs> is a constant
(runtime error).
To lift a type restriction, use the CASTING addition in the
ASSIGN statement. The data object is then interpreted as though
it had the data type of the field symbol. You can also do this
with untyped field symbols using the CASTING TYPE <type> addition.
The danger with pointers is that they may point to invalid areas.
This danger is not so acute in ABAP, because the language does not
use address arithmetic (for example, in other languages, pointer p
might point to address 1024. After the statement p = p + 10, it would
point to the address 1034). However, the danger does still exist, and
memory protection violations lead to runtime errors.
A pointer in ABAP may not point beyond a segment boundary. ABAP does
not have one large address space, but rather a set of segments.
Each of the following has its own segment:
* All global data
* All local data
* Each table work area (TABLES)
* Each COMMON PART
You should only let field symbols move within an elementary field or
structure where ABAP allows you to assign both within the global data
and beyond a field boundary.
Rgds
Umakanth

Definition on and difference between a Characteristic and an Attribute

Hi all
In our Reporting group we have been asked for a one-pager, which explains the difference between attributes and characteristics and how these work in BW. We have, in our words explained to them what the difference is, but in the process of doing so, we realize that we have not seen any document or explanation, which states the u201Ctruthu201D. I am sure that such document(s) already exists. I just dont know where.
I hope someone can help!
Kind regards,
Rasmus

Hi Rasmus,
Characteristics: Characteristics are sorting keys, such as company code, product, customer group, fiscal year, period, or region. They specify classification options for the dataset
Attribute : An attribute is a characteristic that is logically assigned, and subordinated, to another characteristic.
Please check the below links, hope it will help you
http://help.sap.com/saphelp_nw04/helpdata/en/23/054e3ce0f9fe3fe10000000a114084/frameset.htm
http://help.sap.com/saphelp_apo/helpdata/en/58/2b8e39e1ba3541e10000000a11402f/content.htm
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Sai

Differences between Property Classes and Visual Attributes

Hi folks
Can anybody know the exact difference between a property class and a visual attribute?
I'm substantially good at Forms but doesn't know the exact difference.
Any reply will be deeply appreciated.
Cheers,
PCZ

Visual Attributes are only for the visual representation of your items, buttons, blocks, canvas, ...
Property Classes are for inheriting all objects including visual attributes.
If you create a style guide for your company, then first define the visual attributes for the look and feel. After that create property classes for all of the other objects in your application. On top of that create object groups, where you centralize your property classes and visual attributes.
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If you create new forms, copy the template and rename it. Then you have in all your forms inherited visual attributes, property classes, etc. and all this stuff is in one "reference-template"
try it
Gerd

Difference between modal screen and normal screen

Hi everyone,
Now,I am developing a dypro. when I create a modal screen ,I found no difference between normal screen and modal screen.
eg. If I use the statement "call screen" , whatever which type of screen you use, the results look like the same. The same to the statement "call screen start at end at".

Hi
Screen type for modal dialog box
If you activate this attribute, the screen is used as a modal dialog box. In the program, you call the screen with
CALL SCREEN STARTING AT <top left>
ENDING AT <bottom right>.
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Modal dialog box
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Difference between BEx tansport and normal transport

Dear Experts,
Could someone please explain the difference between normal transport truck button and the truck with 'BEx' as label.
Please let me know the context where these will be using
Kind regards
Shanthi

If you press the help button this appears:
Transporting BEx Objects
BEx objects (queries and workbooks) are transported differently in BI to
other objects. When you maintain these objects, you do not get a dialog
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has to generate requests for these objects in the Data Warehousing
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BEx Transport Requests for Single Packages
In some cases, one request is not big enough for all the BEx objects.
This can be the case, for example, if you want to transport objects from
a development system into various different productive systems.
If this happens, you can create BEx request for each package. The BEx
objects are distributed among the different requests according to their
package. The package specifies among other things the transport target
of an object, and this means that you are able to use this process to
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targets into different requests.
If you do not create a special request for the package of an object, the
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Hope it helps.
BR
Stefan

Difference between Navigation attribute and normal attribute

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