A quick reference before your SAP ABAP interview

What is Data element & Domain in SAP Data dictionary ?Its a common question in all interviews and expected answer will be "Both are SAP data dictionary objects. That can be created using transaction code SE11.Both describes the characteristics of a field. Data element describes the semantic characteristics of a field like description & online documentation. Domain describes the technical characteristics of the field like data type, decimal places, data length and value range."What are the technical characteristics of a table?Data Class, Size category, Buffering permissions, Buffering type, Logging.Difference between table & structure?Structure can contain only one data record at run time. What is Value Table & Check table?If all the fields or components that refer to the domain should be checked against a certain table this table can be defined as the value table of the domain.When a foreign key links two tables by assigning fields of table T1 to the primary key fields of  Table T2,table T1  is called the foreign key table(dependent  table) and table T2 the check table (referenced table)Events in ReportsINITIALIZATIONAT SELECTION-SCREENTOP-OF-PAGESTART-OF-SELECTIONEND-OF-SELECTIONEND-OF-PAGEAnd prepare for other questions about each events.Function Modules in BDCBDC_OPEN_GROUPBDC_INSERTBDC_CLOSE_GROUPYou should prepare for questions about SAP memory, ABAP memory, BDC, LSMW, Transaction codes , table names and ALE/IDOC .Various online resource are there for SAP Training study materials, help documents and TutorialsBest of luck for your interview and wish you a great success in your SAP career.