Data Modeler Logical Data Type confusion!

I don't get it.
When defining a logical model, I want to assign data types to the attributes in my model.
I understand a logical datatype like money, and that a logical datatype might be implemented differently in different databases. The concept makes perfect sense to me.
I pick a datatype from the Logical Types.
It ignores the logical datatype that I picked and puts in another datatype instead. I'm guessing that it's a physical mapping. I would understand the logical-to-relational mapper doing that , but I don't understand it happening at this point in the model life cycle.
Let's say I pick Money. It puts Double into the logical datatype, not money.
If I pick Date or DateTime, it puts Date into the logical datatype, so what is the point of giving me two types to pick from?
Seems kind of wonky.

David,
We will publish soon a document on how the data types work.
If you go to tools, Types administration you will see that a logical type is mapped to a native type and a native type is mapped to a logical type.
The logical type MONEY is mapped to DOUBLE for Oracle.
Types and domain files can be customised.
One could argue that the logical name MONEY should show up and not the native name. Showing the native name has the benifit that you see what the logical type is mapped to. Both approaches could have their supporters, no?
Kind regards,
René De Vleeschauwer
SQL Developer Data Modeling.

Similar Messages

Error while fetching data from Logical data base

Hi All,
I need to fetch the data from Logical data base DDF.First when i am trying demo code
REPORT demo_program_read_tables_2.
NODES: spfli, sflight.
GET spfli FIELDS carrid connid cityfrom cityto.
WRITE: / spfli-carrid,
 spfli-connid,
 spfli-cityfrom,
 spfli-cityto.
GET sflight FIELDS fldate.
WRITE: / sflight-fldate.
I am getting error like ""spfli is not a node of the logical data base __S""
Should i declare anything esle?
Madhu

REPORT demo_logical_database.
DATA wa_spfli TYPE spfli.
SELECT-OPTIONS s_carr FOR wa_spfli-carrid.
DATA: callback TYPE TABLE OF ldbcb,
 callback_wa LIKE LINE OF callback.
DATA: seltab TYPE TABLE OF rsparams,
 seltab_wa LIKE LINE OF seltab.
callback_wa-ldbnode = 'SPFLI'.
callback_wa-get = 'X'.
callback_wa-get_late = 'X'.
callback_wa-cb_prog = sy-repid.
callback_wa-cb_form = 'CALLBACK_SPFLI'.
APPEND callback_wa TO callback.
CLEAR callback_wa.
callback_wa-ldbnode = 'SFLIGHT'.
callback_wa-get = 'X'.
callback_wa-cb_prog = sy-repid.
callback_wa-cb_form = 'CALLBACK_SFLIGHT'.
APPEND callback_wa TO callback.
seltab_wa-kind = 'S'.
seltab_wa-selname = 'CARRID'.
LOOP AT s_carr.
MOVE-CORRESPONDING s_carr TO seltab_wa.
APPEND seltab_wa TO seltab.
ENDLOOP.
CALL FUNCTION 'LDB_PROCESS'
 EXPORTING
 ldbname = 'F1S'
 variant = ' '
 TABLES
 callback = callback
 selections = seltab
 EXCEPTIONS
 ldb_not_reentrant = 1
 ldb_incorrect = 2
 ldb_already_running = 3
 ldb_error = 4
 ldb_selections_error = 5
 ldb_selections_not_accepted = 6
 variant_not_existent = 7
 variant_obsolete = 8
 variant_error = 9
 free_selections_error = 10
 callback_no_event = 11
 callback_node_duplicate = 12
 OTHERS = 13.
IF sy-subrc <> 0.
WRITE: 'Exception with SY-SUBRC', sy-subrc.
ENDIF.
FORM callback_spfli USING name TYPE ldbn-ldbnode
 wa TYPE spfli
 evt TYPE c
 check TYPE c.
CASE evt.
 WHEN 'G'.
 WRITE: / wa-carrid, wa-connid, wa-cityfrom, wa-cityto.
 ULINE.
 WHEN 'L'.
 ULINE.
ENDCASE.
ENDFORM.
FORM callback_sflight USING name TYPE ldbn-ldbnode
 wa TYPE sflight
 evt TYPE c
 check TYPE c.
WRITE: / wa-fldate, wa-seatsocc, wa-seatsmax.
ENDFORM.

Data Models and Data Flow diagrams.

Hi Gurus,
Can anybody brief me the concept of Data Models and Data Flow Diagrams and their development with illustrations. And is it a responsibility of a Technical or a Functional consultant..i.e to translate Business requirements and functional specifications into technical specifications, data flow diagrams and data models.
Your valuable answers will be rewarded.
Thanks in advance.

Hi,
Concept of Data Models
Data model or Data modelling is basically how you define or design your BW Architecture based on Business requirements. It deals with designing and creating a effcient BW architecture sticking to standard practices.
Multi-Dimensional Modeling with SAP NetWeaver BI
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/6ce7b0a4-0b01-0010-52ac-a6e813c35a84
/people/githen.ronney3/blog/2008/02/13/modeling-strategies
Modeling the Data Warehouse Layer with BI
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/3668618d-0c01-0010-1ab5-aa75c3a4dfc2
/people/gilad.weinbach2/blog/2007/02/23/a-beginners-guide-to-your-first-bi-model-in-nw2004s
Data Flow Diagrams
This show the path of data flow for each individual object in BW. How data dets loaded into that object and how it is going out of the object etc.
Right click on the data target > show data flow .
It shows all the intermdeiate layer through which data comes into that particular object.
Responsibility of a Technical or a Functional consultant
This is done genrally in the designing phase itself by a Senior Technical Consultant with the help of a Functional consultant or a Techno=Functional consultant interacting with Business.
Hope this helps.
Thanks,
JituK

Differences between operational systems data modeling and data warehouse da

Hello Everyone,
Can anybody help me understand the differences between operational systems data modeling and data warehouse data modeling>
Thanks

Hello A S!
What you mean is the difference between modelling after normal form like in operational systems (OLTP) e. g. 3NF and modelling a InfoCube in a data warehouse (OLAP)?
While in a OLTP you want to have data tables free of redundance and ready for transactions meaning writing and reading few records often, in an OLAP-system you need to read a lot of data for every query you do on a database. Often in an OLAP-system you aggregate these amounts of data.
Therefore you use another principle for these database scheme. This is called star schema. This means that you have one central table (called fact table) which holds the key figures and have keys to another tables with characteristics. These other tables are called dimension tables. They hold combinations of the characteristics. Normally you design it that your dimensions are small, so the access on the data is more efficent.
the star scheme in SAP BI is a little more complex than explained here but it follows the same concept.
Best regards,
Peter

Q: Data Modeler - Logical Model - 0 or 1 to....relationships...

Hi,
I’m currently at a client where we’re using Oracle SQL Developer Data Modeler to design our Logical Data Models (as part of an overall deliverable).
When in the Oracle SQL Developer Data Modeler (in the logical view), I’m trying to figure out if the tool has the ability to create a “zero or one to” relationship between entities.
According to the relationship options available, it only seems to show:
One to One,
One to Many (*),
Many (*) to One, or
Many (*) to Many (*)
In the preferences – Data Modeler – Diagram – Logical Model, the notation type is set to “Barker”.
I don’t see anywhere else where configuration can affect the variation of these options…
Is there a way to show either a “Zero or One to…” relationship between entities?
I’ve also loaded version 3.1 (beta) and it appears to be behaving the same as 3.0…
Any insights are greatly appreciated…
Thanks,
Patrick

Hi Kent,
When I looked at this option, I was expecting to see a "|" and/or "O" in front of the crow's feet. I was not expecting to see a dashed line. Now I know...
Thanks for your reply.
Regards,
Patrick

SQL Developer Data Modeler: Logical model, unable to create arc

I have a logical model in SQL Developer Data Modeler. Entity A has two 'incoming' foreign key relations to entities B and C. Both releations have the same optionality and cardinality. I want to place both relations in an arc. I see the buttons in my toolbar menu, but they are not enabled. Even when I select both relations it is not.
Bringing the logical model to the relational model creates foreign keys. These foreign keys can be selected and when I do that the 'Create new arc' button in the relational model toolbar is enabled.
What am I missing in the logical model ...? The documentation doesn't give a clue.
Erik

Thanks Sue, that worked. It is different from the way the ERD in Designer worked. Is there any reasoning behind it. As far as I know you should only put into an arc two or more relationships pointing to the same entity with the same optionality and the same cardinality. Selecting the entity with the relationships can only help in identifying at which relationship end the arc should be created but that is obvious.
And asking the question is answering it: it will help in adding an arc to two or more entities originating and ending at the same entity (and same cardinality and optionality).
Is that the reasoning behind it?
Regards
Erik

Data Modeler / Logical Model / How to display the "relationship name" ?

Hi,
Oracle SQL Developper Data Modeler 2.0.0 (build 584):
I would like to know if there is a way to display the "relationship name" in the diagram for the logical model in the GUI interface and/or to print it?
I checked in the different setup tool options and I did not find it...
Thanks for your help.
Regards,
Robin Ouellet

Hi Robin,
you cannot "show" relationship name on logical diagram - you can show "name on source" and "name on target" properties. You can set them at cardinality page of relationship dialog, And make them visible in "Tools>General options>Diagram>Logical model" settings - it's "Show Source/Target Name" option.
For printing - you can use "File>Print Diagram" to print in different format. Also "File>Print" allow diagram to be printed to printer, plotter or PDF printer if you have one installed.
Philip

Different LOV behavior between SQL query data model and data template

I have noticed different behavior when using parameters linked to list of values (LOV) of type menu with the multiple selection option enabled and a SQL query data model vs a data template. Here's the example because that first sentence was probably really confusing.
SQL Query:
select
plmc.MonthCode, plmc.ModalityDim, plmc.ModalityName,plmc.RegionDim
from
DataOut.dbo.PatientLabMonthlyCross plmc
where
plmc.MonthCode = 200202
and plmc.RegionDim = 1209
and 1 =
case
when coalesce(:modalityDim,null) is null
then 1
else
case
when plmc.ModalityDim in (:modalityDim)
then 1
else 0
end
end
Putting BI Publisher into debug mode, defining a data model of type SQL Query, defining a parameter called :modalityDim linked to a LOV that allows multiple selections, and selecting a couple of values from the LOV the output of the prepared statement is:
[081607_122647956][][STATEMENT] Sql Query : select
plmc.MonthCode,
plmc.ModalityDim,
plmc.ModalityName,
plmc.RegionDim
from
DataOut.dbo.PatientLabMonthlyCross plmc
where
plmc.MonthCode = 200202
and plmc.RegionDim = 1209
and 1 =
case
when coalesce(?,?,null) is null
then 1
else
case
when plmc.ModalityDim in (?,?)
then 1
else 0
end
end
[081607_122647956][][STATEMENT] 1:6
[081607_122647956][][STATEMENT] 2:7
[081607_122647956][][STATEMENT] 3:6
[081607_122647956][][STATEMENT] 4:7
[081607_122654713][][EVENT] Data Generation Completed...
[081607_122654713][][EVENT] Total Data Generation Time 7.0 seconds
Note how the bind variable :modalityDim was changed into two parameters in the prepared statement.
When I use this same SQL Query in a data template the output is:
[081607_012113018][][STATEMENT] Sql Query : select
plmc.MonthCode,
plmc.ModalityDim,
plmc.ModalityName,
plmc.RegionDim
from
DataOut.dbo.PatientLabMonthlyCross plmc
where
plmc.MonthCode = 200202
and plmc.RegionDim = 1209
and 1 =
case
when coalesce(?,null) is null
then 1
else
case
when plmc.ModalityDim in (?)
then 1
else 0
end
end
[081607_012113018][][STATEMENT] 1:'6','7'
[081607_012113018][][STATEMENT] 2:'6','7'
[081607_012113574][][EXCEPTION] java.sql.SQLException: Syntax error converting the nvarchar value ''6','7'' to a column of data type int.
Note the exception because it is trying to convert the multiple parameter values.
Am I doing something completely wrong here? I really need to use a data template because I will need to link a couple of queries together from different database vendors.
-mark

This is for 10.1.3.4 - because in 11g every SQL query is automatially part of a data model.
In 10g SQL query is for simple unrelated SQL queries.
If you need to use advance features such as:
a) multiple SQL queries that are joined in master-detail relation ships
b) before/after report triggers
Then you will need to use the data template, which is an XML description
of the queries, links, and PL/SQL calls.
hope that helps,
Klaus

Data Modeler: Relational data model questions

1. Can a different notation be specified for relational data models' constraints? Specifically, I'd like crow's feet. BTW, the docs show crow's feet and parent pointer (with the arrowhead), but there's no such thing in the actual modeler.
2. Is there any way to manually route FK constraints lines?
3. When forward engineering from logical, is there any way to indicate the preferred name for keys and indexes (primary, unique, foreign)?
4. Mandatory/optional indicator on tables: what exactly does 'N' or 'A' stand for? I can understand 'N' meaning "Not optional", but 'A'? Wouldn't it be simpler to use '*' and 'o' like in the logical?
Man, do I ever miss Designer!
Thanks,
Patrick

Here's one more question:
I've transformed several super/sub entities to relational, and some of the tables do not allow me to open Properties (on the table). I can use the navigator to open column properties, but cannot open table properties (neither from diagrammer nor from navigator). Some of the tables are two or three subtype levels deep, and I haven't figured out why some open and some don't.

Data Modelling/BW Data Architect

I am supposed to do Data Modelling.
What are the key steps to do data modelling.
for financial ap, ar, gl,co.
Thanks
Michelle

Hi,
And also read this document as the starting document on designof any infocube.
http://help.sap.com/bestpractices/crossindustry/businessintelligence/v131/documentation/Multi-dimensional_modeling_EN.doc
With rgds,
Anil Kuma Sharma .P

Master Data modeling with data from several source clients

Hi people,
We have a modeling issue at hand..
From several R/3 sources, separated as Clients (eg. client 100, 101, 102 etc.) we will load data (transactional and Master Data) to one BW system.
Now, I am wondering what is the best way to avoid Master Data issues here, when data can be different for the same objects in the various source systems (clients)
Example:
In source client 100, 0MATERIAL 1000 = PLASTIC
In source client 101, 0MATERIAL 1000 = WOOD
I have tried to understand how compounding with 0SOURCESYSTEM works, but I can't see how that will work for us, since we may have several clients on the same sourcesystem (e.g. client 100 and 101 can be on the same system). This would not help me separate the masterdata.
- Does anyone have experience with this they could share?
- Is it a possibility to add 0LOGSYS or something to our InfoObjects that we will load?
- Do we then add the InfoObject to the cube in the end?
Any inputs that can clarify this is appreciated. Points awarded ofcourse!
Cheers,
Jon A.

Hi,
Donot go with one server to define it as a source system .I mean ,Even though you have only one R/3 server . you have 3 clients in it. So go with Clients to define the source systems.
So in BIW You must have 3 different source systems in Source system tree. Am I irght?
So all of them has different logical system names.
So use 0LOGSYS as compounding characterstic.
With rgds,
Anil Kumar Sharma .P

SQL Developer Data Modeler Import Data Dictionary from Oracle 10g

Whenever I try to import even one table from the data dictionary, it never completes. Is there any known issue with this?

Hi Eric,
we don't have such problem reported. Do you use Oracle driver (it comes with product) or it's another driver - JDBC-ODBC or something else? Can you provide more info?
Best regards,
Philip

Xcode, how do you take an app from an idea to a data model, data structure, or class structure?

Hey everyone!
I'm a beginner xcoder and computer engineering sophomore and have literally spent every hour of the past few weeks reading as much as I possibly can about becoming a developer.
I've found plenty of documentation, and guides on how to do very specific things in xcode and objective-C but am still looking for more information on one topic; how do you decide which data models/structures/controllers etc to use?
I mean, you personally. I've been looking for a resource on this and have not been able to find one. I just finished Apple's iOS Developers Guide and they mention "choosing a data model" but do not describe them in much detail.
The following is what is provided in the guide:
● Choose a basic approach for your data model:
● Existing data model code—If you already have data model code written in a C-based language, you
can integrate that code directly into your iOS apps. Because iOS apps are written in Objective-C, they
work just fine with code written in other C-based languages. Of course, there is also benefit to writing
an Objective-C wrapper for any non Objective-C code.
● Custom objects data model—A custom object typically combines some simple data (strings, numbers,
dates, URLs, and so on) with the business logic needed to manage that data and ensure its consistency.
Custom objects can store a combination of scalar values and pointers to other objects. For example,
the Foundation framework defines classes for many simple data types and for storing collections of
other objects. These classes make it much easier to define your own custom objects.
● Structured data model—If your data is highly structured—that is, it lends itself to storage in a
database—use Core Data (or SQLite) to store the data. Core Data provides a simple object-oriented
model for managing your structured data. It also provides built-in support for some advanced features
like undo and iCloud. (SQLite files cannot be used in conjunction with iCloud.)
● Decide whether you need support for documents:
The job of a document is to manage your app’s in-memory data model objects and coordinate the storage
of that data in a corresponding file (or set of files) on disk. Documents normally connote files that the user
created but apps can use documents to manage non user facing files too. One big advantage of using
documents is that the UIDocument class makes interacting with iCloud and the local file system much
simpler. For apps that use Core Data to store their content, the UIManagedDocument class provides similar
support.
I suppose my question boils down to, how do you decide which structures to use? If you can provide an example of an app idea and how its implemented that would be very helpful and much appreciated!
For example, to implement the idea of an app which allows users to progress through levels of knowledge of a certain subject and rewarding them with badges and such (this is not an actual app just a whim) how would one model that?
Thanks in advance for all your help!!!

SgtChevelle wrote:
how do you decide which structures to use?
Trial and error.
I wish I had a better answer for you, but that pretty much encapsulates it. There is some, but not much, good wisdom out there, but it takes a significant amount of experience to be able to recognize it. The software development community if currently afflicted with a case of copy-and-paste-itis. And the prognosis is poor.
The solution is to be brutal to yourself and others. Focus on what you need and ignore everything else. Remember that other people have their own needs and methods and they might not be applicable to you. Apple, for example, can hire thousands of programmers, set them to coding for six months, pick the best results, and have the end-users spend their own time and monety to test it. If you don't have Apple's resources and power, think twice about adopting Apple's approach. And I am talking from a macro to a micro perspective. Apple's sample and boilerplate code is just junk. Don't assume you can't do better. You can.
Unfortunately, all this takes time and practice. You can read popular books, but never assume that anyone knows more than you do. Maybe they do and maybe they don't. It takes time to figure that out. Just do your best, ignore the naysayers, and doubt other people even more than you doubt yourself.

Invalid Name Pattern in SQL Developer Data Modeler

I am using Data Modeler version 3.3.0.747, I have exported a couple of data models (logical and physical) to an Oracle 11.2.0.3 database. I used the Reporting_Schema_Permissions.sql file to define the ID that owns the repository. Each data model that I exported returned the successful export message.
However when I use Oracle Data Modeler and connect (as a different user) to the repository to generate a report on one of the diagrams I immediately get an error returned. The error is (from the log file in datamodeler\log\datamodeler.log):
2013-04-19 08:36:12,233 [Thread-18] ERROR ReportsGenerationDialog - Generating report from Reporting Schema exception - invalid name pattern: username.OBJECTS_LIST
Where username is the name of the ID being used to generate the report (not the repository owner ID).
I have created public synonyms on the repository tables and views (though I must have missed where that was a requirement) so the repository objects can be seen by other users.
Has anyone encountered this and if so how did you resolve it. I have searched the web (and the Oracle forums) and so far had no hits on this issue. That seems to indicate that there is something I must have missed in the setup or such.
Thanks

Hi,
I think you didn't grant EXECUTE to package and types. Here is full working script:
DECLARE
CURSOR cur IS SELECT table_name, owner FROM all_tables WHERE owner='<owner>';
BEGIN
FOR rec IN cur LOOP
EXECUTE IMMEDIATE 'GRANT SELECT ON '||'<owner>'||'.'||rec.table_name||' to '||'<another_user>';
EXECUTE IMMEDIATE 'CREATE SYNONYM '||'<another_user>'||'.'||rec.table_name||' FOR '||'<owner>'||'.'||rec.table_name;
END LOOP;
END;
DECLARE
CURSOR cur IS SELECT view_name FROM all_views WHERE owner='<owner>';
BEGIN
FOR rec IN cur LOOP
EXECUTE IMMEDIATE 'GRANT SELECT ON '||'<owner>'||'.'||rec.view_name||' to '||'<another_user>';
EXECUTE IMMEDIATE 'CREATE SYNONYM '||'<another_user>'||'.'||rec.view_name||' FOR '||'<owner>'||'.'||rec.view_name;
END LOOP;
END;
DECLARE
CURSOR cur IS SELECT type_name FROM all_types WHERE owner='<owner>';
BEGIN
FOR rec IN cur LOOP
EXECUTE IMMEDIATE 'GRANT EXECUTE ON '||'<owner>'||'.'||rec.type_name||' to '||'<another_user>';
EXECUTE IMMEDIATE 'CREATE SYNONYM '||'<another_user>'||'.'||rec.type_name||' FOR '||'<owner>'||'.'||rec.type_name;
END LOOP;
END;
GRANT EXECUTE ON <owner>.pkg_osdm_utils to <another_user>;
CREATE SYNONYM <another_user>.pkg_osdm_utils FOR <owner>.pkg_osdm_utils;
There is no document for reporting repository install process. If you are exporting design for first time, the repository is automatically created for you.
When you get new version of DM you can
1. Use new repository
2. Upgrade existing one. If so, the simplest variant is to run /datamodeler/reports/DMRS_Upgrade_Script_<latest_vesrion>. Eventually compile single stored procedure.
Another variant for upgrade is with running osddm_upgr.sql, but there is some error, which is going to be fixed in the next release.

Domains usage in SQL Developer data MODELER

Hi,
I'm trying to understand how to use Domains in Oracle SQL Developer Data Modeler. We use version 3.1.3 . before I used Toad Modeler where domains are just part of your main design.
Oracle data modeler has some different concept.
let's assume I'm working on 2 designs: DesignA and DesignB that include relational models.
DesignA and Design B should use domains but list of domains in design A is very different than in design B.
Default domain file is located on c: drive where SqlModeler is installed. It is obviously unacceptable , so I need to change Default System Type directory in preferences.
And of course I want to have different domain directories for DESIGN A and DESIGN B.
So when I open design A then I changed Default System Type directory let's say to x:\AAA. Then i close design A and open Design B and change Default System Type directory to x:\BBB
I checked folders AAA and BBB and they have necessary XML files there: defaultdomains.xml, defaultRFDBSSites and so on....
Now questions:
can I rename defaultdomains.xls to something else like AAAdomains.xls? Domain administration can edit any domain file with any name , but how can I associate certain domain file with my design? My wish , when I open my design , then corresponding domain file will be open automatically. Is it possible?
If I open 2 designs in Sql Modeler and switch between designs then corresponding domain files should be changed automatically as well. Currently I shouldn't forget to change default System Type directory every time when I switch models. Is it the only way to handle it?
Thanks
vitaliy

Hi Vitaliy,
We use version 3.1.3
I recommend always to use the latest version. If you don't want to use beta (DM 4.0 EA is out) you can use DM 3.3.
Otherwise Oracle SQL Developer Data Modeler supports two types of domains:
1) DM installation domains - those in file defaultdomains.xml
2) Design level domains - they are stored in design directories and are visible to particular design only. They can be created in following ways:
2.1 Manually - there is a property "Domains file" and you id it's not set "defaultdomains" domain will become design level domain and will be stored in file with provided name (without .xml extension)
You can change later the file for design level domains, however you cannot change file for domain already in defaultdomains.xml.
2.2 Using types to domains wizard you can generate design level domains
2.3 Design level domains are created during import of DDL files (controlled in preferences)
2.4 You can import domains from specific file with domains using "File>Import>Domains" - you need to rename the source file if it's named defaultdomains.xml otherwise you'll get domains as installation domains
If the list with domains is too long you can define a list with preferred domains (or/and logical types) in "Preferences>Data Modeler>Model" and you can use shorter list in Table/Entity dialog if check "Preferred" check box next to "Type:" combo box.
If I open 2 designs in Sql Modeler and switch between designs then corresponding domain files should be changed automatically as well
If you open 2 designs in one instance of DM they will use the same file with default domains i.e. you'll lose domains in one of design depending of setting for "system data type directory". You need to go with design level domains.
Philip

Data Modeler Logical Data Type confusion!

Similar Messages

Maybe you are looking for