logical database

[Former Member]

hi

what are the functions of logical database and advantages of logicaldatabase

[seshatalpasai_madala]

Hi,

Logical database is a program which when attached to a report or any executable program does many database related functions on behalf of you.

The function like Authorization check,

Data fetch etc are done using events like GET etc.

Check the links

https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.highlightedcontent?documenturi=...

GO THROUGH LINKS -

http://www.sap-basis-abap.com/saptab.htm

http://help.sap.com/saphelp_nw04/helpdata/en/9f/db9bfa35c111d1829f0000e829fbfe/content.htm

http://help.sap.com/saphelp_nw04/helpdata/en/9f/db9b5e35c111d1829f0000e829fbfe/frameset.htm

http://help.sap.com/saphelp_nw04/helpdata/en/c6/8a15381b80436ce10000009b38f8cf/frameset.htm

/people/srivijaya.gutala/blog/2007/03/05/why-not-logical-databases

www.sapbrain.com/FAQs/TECHNICAL/SAP_ABAP_Logical_Database_FAQ.html

www.sap-img.com/abap/abap-interview-question.htm

www.sap-img.com/abap/quick-note-on-design-of-secondary-database-indexes-and-logical-databases.htm

http://help.sap.com/saphelp_nw04/helpdata/en/9f/db9b5e35c111d1829f0000e829fbfe/content.htm

http://help.sap.com/saphelp_nw2004s/helpdata/en/9f/db9bb935c111d1829f0000e829fbfe/content.htm

Gothru the blog which provides info on LDB's:

/people/srivijaya.gutala/blog/2007/03/05/why-not-logical-databases

Regards,

Sesh

/

[rainer_hbenthal]

You dont need to have a glue which tables in which joins are finally used, to programs becomes more indepent. The most biggest advantage is that you dont need to have to code authority checks in every program, thats why logical databeses are often used in HR, the biggest disadvantage is the performance.

[SantoshKallem]

in this u have field selection and free selection

field selection is standard selection (which mentioned in program)

free selection is dynamic selection (even we won't mention in program)

this is one of the advantages

regards.

santhosh