Define commit, rollback and savepoint?
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What is the difference between having clause and where clause?
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when a procedure /package is getting invalidated?
What is the primary key?
How do you write a complex sql query?
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Which one of the following pairs of aggregate functions do you use with character fields? 1. COUNT(field) and MAX(field) 2. AVG(field) and COUNT(field) 3. MIN(field) and SUM(field) 4. AVG(field) and MAX(field) 5. COUNT(field) and SUM(field)
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Is nosql relational?