What is recovery manager in Oracle?
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what is the difference between no rows returned and null returned?
From the database level, how can you tell under which time zone a database is operating?
What is the difference between normal and corelated subqueries?
What should be the return type for a cursor variable.Can we use a scalar data type as return type?
What is oracle join syntax?
What is a sub query and what are the different types of subqueries?
what is the output of select * from emp where null=null & select * from emp where 1=1
 How to use an oracle sequence generator in a mapping?
What is Database Trigger ?
T1: T2 A X--- this is updated record B B like this T1 table having no.of records updated. write a query"retrive updated record from T2"
What are Clusters ?
what is cartesian product?