A logical database is a special ABAP/4 program which combines the contents of certain database tables. You can link a logical database to an ABAP/4 report program as an attribute. The logical database then supplies the report program with a set of hierarchically structured table lines which can be taken from different database tables.

Reading a SAP standard logical database (DB M - MRP Documents) in your ABAP/4 program.

start-of-selection.

* get is equal to select * from....
get mdkp.
   check field-name.

get mdtb.
   check field-name

end-of-selection.

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