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Explain what are the different type of segments?
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Define the terms primary key foreign key and also the difference between primary and the unique key
Which Department has MOST NUMBER of employees?
8 Answers IBM, LeadSquared, Mastek,
The table has 3 columns 4 rows. The output is which column has least null values( A COL SHOULD BE THE OUTPUT) Write the query plz. A B C ---------- 1 NULL 7 2 4 NULL NULL 5 NULL 3 NULL NULL
various types of joins
What is a initialization parameter file in oracle?
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What are the factors causing the reparsing of SQL statements in SGA?
Which is faster join or subquery in oracle?
i have a question here... As of my knowledge, when we apply an index (b-tree)on a column, internally it arranges the data in b-tree format and do the fetching process correspondingly... and my quetion is... How a bit-map index arranges the data internally when applied on a column?IS it in b-tree format or whatelse?
Please explain compound trigger in oracle?
How to delete an existing row from a table in oracle?
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Oracle General 
