What is the use of primary key?
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diff b/w sub query and co-relater query?
Can we use delete in merge statement?
What is sql profiling in oracle?
Does sap use sql?
Can dml statements be used in pl/sql?
How does postgresql compare to oracle/db2/ms sql server/informix?
What is the sql*loader? : aql loader
Types of indexes. What is the default key created when a primary key is created in a table ?
What is Difference Between delete and Truncate?
If a View on a single base table is manipulated will the changes be reflected on the base table?
Is big data nosql?
What are two virtual tables available during database trigger execution ?
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