The sequential files on Application Server that are used for file handling in SAP are called as Datasets.

• As defined by ABAP/4 DDIC, the views are used.
• Should avoid nested Selects.
• Instead of using SELECT * its better to use the field list SELECT clause.
• Should avoid the Range Tables.

The return codes of a statement in ABAP programs are mostly used in function module.

Field Symbols are the place holders for an existing fields, it does not physically reserve space for a field, but points to a field which is not known until the runtime of a program. For example the Field Symbol is <FS> [<TYPE>].

The standard data type that object which exists only during the run time of the program, which are used to perform table calculations on subsets of database tables and for reorganizing the contents of a database tables according to user needs. The system needs to allocate for the next record population by the number of memory allocations.

SY-LILLI is absolute number of lines from which the event was triggered, and some of the few system global variables are SY-SUBRC, SY-DBCNT, SY-LILLI, SY-DATUM, SY-UZEIT, SY-UCOMM, SY-TABIX.
Coming the program it is purely a client dependent since the group of users can access these programs with a client number.

CTS is nothing but Change and Transport System it is a tool that helps to organize development projects in ABAP Workbench and in Customizing, and then transport the changes between the SAP systems and clients in the system landscape. This documentation provides with an over view of how to manage changes with the CTS and essential information on setting up your system and client landscape and deciding on a transport strategy.

To validate the selection criteria of a report, match code objects are used. And coming to display the initial values in a selection screen the options are used: Parameters <name> default ‘xxx’ and select options <name> for Spfli-carrid.