ABAP

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reusability). - Use field list (SELECT clause) rather than SELECT *. - Range tables should be avoided (IN operator) - Avoid nested SELECTS. i)system tools ii)field symbols and field groups. ans:- Field Symbols : Field symbols are placeholders for existing fields. A Field Symbol does not physically reserve space for a field,but points to a field which is not known until runtime of the program. eg:- FIELD-SYMBOL <FS> [<TYPE>]. Field groups : A field group combines several fields under one name.At runtime,the INSERT command is used to define which data fields are assigned to which field group. There should always be a HEADER field group that defines how the extracted data will be sorted,the data is sorted by the fields grouped under the HEADER field group. 47. What are datasets? 47. What are datasets? 47. What are datasets? 47. What are datasets? ANS:- The sequential files(ON APPLICATION SERVER) are called datasets. They are used for file handling in SAP. 48. How to find the return code of a statement in ABAP programs? 48. How to find the return code of a statement in ABAP programs? 48. How to find the return code of a statement in ABAP programs? 48. How to find the return code of a statement in ABAP programs? ANS:- Using function modules. 49. What are interface/conversion programs in SAP? 49. What are interface/conversion programs in SAP? 49. What are interface/conversion programs in SAP? 49. What are interface/conversion programs in SAP? ANS :