What is the difference between UNIQUE CONSTRAINT and PRIMARY KEY? 1. There is no difference. 2. A PRIMARY KEY cannot be declared on multiple columns. 3. A UNIQUE CONSTRAINT cannot be declared on multiple columns. 4. A table can have multiple PRIMARY KEYS but only one UNIQUE CONSTRAINT. 5. A table can have multiple UNIQUE CONSTRAINTs but only one PRIMARY KEY.
7 15446Post New Satyam Interview Questions
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DB2 connector> transformer > sequential file Data will be exported into a csv format in a sequential file. This file will be send in a email using a sequence job. Problem here is, how to avoid sending a blank csv file? When I ran the job there are chances that it might return zero records but in the sequence job csv file is going blank. how can I avoid this? thanks
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