What are nested tables?
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1.how to extract the second highest salary from emp table having sal as a column which contains the salary of all employee of an organisation.
what is IDE,DMV in sql server?
What spfile/init.ora file parameter exists to force the CBO to make the execution path of a given statement use an index, even if the index scan may appear to be calculated as more costly?
what are bitmap indexes? How does they work?
How to delete an existing row from a table in oracle?
How to find no of saturdays in a month using single sql ?
Explain self joins in oracle?
How to see free space of each tablespace?
How do we switch from init.ora file to asp file?
What is Trace File ?
How to define default values for formal parameters?
What is SGA ? How it is different from Ver 6.0 and Ver 7.0 ?