topic Re: define data dictionary. in Application Development and Automation Discussions

define data dictionary.

Former Member — Thu, 24 May 2007 14:44:35 GMT

define data dictionary in sap?

Re: define data dictionary.

Former Member — Thu, 24 May 2007 14:55:13 GMT

hi,

Dictionary

The ABAP/4 Data Dictionary is the central component of ABAP/4 Repository.

It is centralised and structured source of information for business applications

It is the source of every every definition with in R/3 system.

It is totally integrated with other tools of Dev. environment like Screen painter etc.,

Some of the main available functions in the ABAP/4 Dict.

Management of data definitions (Select, Insert, Update and Delete)

Preserve data integrity.

Information about the defined relationship between two tables or even dictionary tells whether table is active or empty.

Dictionary Objects

Tables

Structures

View

Data element

Domain

Lock Objects and

Search Helps

check these sites:

http://sapabap.iespana.es/sapabap/manuales/learnabap/

http://help.sap.com/saphelp_nw2004s/helpdata/en/43/41341147041806e10000000a1553f6/frameset.htm

http://help.sap.com/saphelp_nw04/helpdata/en/cf/21eb6e446011d189700000e8322d00/content.htm

http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/21ea31446011d189700000e8322d00/frameset.htm

http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCDWBDIC/BCDWBDIC.

Re: define data dictionary.

Former Member — Thu, 24 May 2007 14:55:24 GMT

Hi Meenakshi

Data dictionary describes the logical structures of the objects used in application development and shows how they are mapped to the underlying relational database in tables/views.

Reward if useful.

Thanks

Aneesh.

Re: define data dictionary.

Former Member — Thu, 24 May 2007 14:57:15 GMT

You need to use SE11 Transaction and see the below links

http://www.sap-img.com/

Re: define data dictionary.

Former Member — Thu, 24 May 2007 18:26:55 GMT

Hi Meenakshi,

Data Dictionary:Data definitions (metadata) are created and managed in the Data Dictionary. The Data Dictionary permits a central description of all the data used in the system without redundancies. New or modified information is automatically provided for all the system components. This ensures data integrity, data consistency and data security.

You can create the corresponding objects (tables or views) in the underlying relational database using these data definitions. The Data Dictionary therefore describes the logical structure of the objects used in application development and shows how they are mapped to the underlying relational database in tables or views.

The Data Dictionary also provides standard functions for editing fields on the screen, for example for assigning a screen field an input help.

The most important object types in the Data Dictionary are tables, views, types, domains, search helps and lock objects.

Tables are defined in the Data Dictionary independently of the database. A table having the same structure is then created from this table definition in the underlying database.

Views are logical views on more than one table. The structure of the view is defined in the Data Dictionary. A view on the database can then be created from this structure.

Types are used in ABAP programs. The structure of a type can be defined globally in ABAP programs. Changes to a type automatically take effect in all the programs using the type.

Lock objects are used to synchronize access to the same data by more than one user. Function modules that can be used in application programs are generated from the definition of a lock object in the Data Dictionary.

Different fields having the same technical type can be combined in domains. A domain defines the value range of all table fields and structure components that refer to this domain.

The Data Dictionary also contains the information displayed with the F1 and F4 help for a field in an input template. The documentation about the field is created for a data element that describes the meaning of the contents of a table field. The list of possible input values that appears for the input help is created by a foreign key or a search help.

Hope this helps.

Please reward if useful.

Thanks,

Srinivasa

Re: define data dictionary.

Former Member — Thu, 24 May 2007 18:32:17 GMT

Hi Meenakshi,

The SAP R/3 Data Dictionary is a data management system (DMS). The principle functions performed by a data dictionary include the following tasks:

The management of all data definitions (metadata).

The ability to provide information for evaluations.

Managing the underlying support for software development.

Providing support for documentation.

Ensuring its data definitions are: reliable, flexible and always up-to-date.

Hope this helps.

Please reward if useful.

Thanks,

Srinivasa

Re: define data dictionary.

Former Member — Fri, 25 May 2007 05:43:31 GMT

hi,

Data Dictionary-It is the central source of information.

It consists of master data and transactional data.

Master data-which is rarely changed.

Transactional data-which is frequently changed.