Extract datasets?? Internal Tables??.. & Field Groups??..

[Former Member]

Hello Dear ABAP Ace's,

Please let me know if what are differences between Extract datasets, Internal Tables, & Field Groups????? And what are the similarities?? Also let me know the uses of extract datasets & Field groups???

Thanks in advance.

Regards.

Farooq

[Former Member]

Hello Dear ABAP Ace's,

Please let me know if what are differences between Extract datasets, Internal Tables, & Field Groups????? And what are the similarities?? Also let me know the uses of extract datasets & Field groups???

Thanks in advance.

Regards.

Farooq

[Laxmana_Appana_]

Hi,

There are two ways of processing large quantities of data in ABAP - either using internal tables or extract datasets.

An internal table is a dynamic sequential dataset in which all records have the same structure and a key. They are part of the ABAP type concept. You can access individual records in an internal table using either the index or the key.

Extracts are dynamic sequential datasets in which different lines can have different structures. Each ABAP program may currently only have a single extract dataset. You cannot access the individual records in an extract using key or index. Instead, you always process them using a loop.

Check these links :

http://help.sap.com/saphelp_nw2004s/helpdata/en/9f/db9ede35c111d1829f0000e829fbfe/frameset.htm

http://www.geocities.com/SiliconValley/Grid/4858/sap/ABAPCode/Fieldgroups.htm

http://help.sap.com/saphelp_nw04/helpdata/en/fc/eb3ca6358411d1829f0000e829fbfe/frameset.htm

Regards

L Appana