What are the two characteristics of a primary key?
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Why is the cursor important?
What is the difference between nvl function, ifnull function, and isnull function?
What are properties of the transaction?
Is it possible to Restore a Dropped Table using Rollback Command in Oracle SQL Plus ?
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one of the column in my table contains the data like SAL ---- 1000 1000 2000 3000 3000 So my requirement is i want output like SAL --- 1000 2000 3000 it mean i want to delete duplicate rows in the table permanently and i want output in the above formatow should u write query?
what is autonomouse transaction?
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Cite the differences between execution of triggers and stored procedures?
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Is primary key is clustered index?
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