What is raid? How does it help storage of databases?
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What are the different types of joins and explain them briefly.
What does rownum mean in sql?
How will you select unique values from a list of records?
What is %rowtype in pl sql?
how u can find the n row from a table?
Define a temp table?
what is cursor. write example of it. What are the attributes of cursor.
What is constant in pl sql?
Is it possible to read/write files to-and-from PL/SQL?
how many values can the set function of mysql take? : Sql dba
..........refers to the disk mirroring
What can I use instead of union in sql?
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