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What is a unique key and primary key and foreign key?
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I have a table with 1 million records out of which 10,000 records are of unique records, then if I will implement index, then which type of index shall I use and why shall I use?
Is record in oracle pl sql?
what is the differnce between procedure and function? in both dml operations can work and in procedure through out parameter you can return value ,then what is the differce?
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Is a secondary key the same as a foreign key?
Create a procedure to delete certain records from a table and display the total number of records deleted in this process. (Condition for deletion can be of ur choice, for instance delete all records where eid='')
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