Answer Posted / lokesh

Full Form Of
BADI : Business Add-in's
BAPI : Business Application Programming Interface
ALV : ABAP List Viewer
ALE : Application Link Enabling

BAPI : It is used to transfer data between SAP systems
and Non-SAP Systems and vice-versa.Ex: if are using .net
application where u want to connect the SAP system and
retrieve the data and then change and updated in SAP system
for that purpose we use this.

ALV : ALV reduce development time because Summing and
column alignment ,coloring etc,,,will taken care by ALV.It
have predefined Function Modules and SAP standard tables
Function Modules used in ALV are
REUSE_ALV_FIELDCATALOG_MERGE
REUSE_ALV_LIST_DISPLAY
REUSE_ALV_GRID_DISPLAY
REUSE_COMMENTARY_WRITE
REUSE_ALV_EVENT_GET...

SAP STANDARD TABLES
SLIS_T_FIELDCAT_ALV
SLIS_T_LISTHEADER
SLIS_T_EVENT
SLIS_T_LAYOUT

ALE : It provide intelligent mechanisms where by client
can achieve integration as well as distribution of
applications and data

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