Is a secondary key the same as a foreign key?

0 Answers  

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how to dump a table to a file with 'mysqldump'? : Sql dba

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What is sql key?

0 Answers  

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A table has 150 records. How do you retrieve 100th row to 120th row from that table ?

21 Answers   IBM,

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Mention what problem one might face while writing log information to a data-base table in pl/sql?

0 Answers  

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What is view explain with example?

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What is a composite primary key?

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Which is faster count (*) or count 1?

0 Answers  

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What is the main difference between a UNION statement and a UNION ALL statement? 1. A UNION statement eliminates duplicate rows; a UNION ALL statement includes duplicate rows. 2. A UNION statement can be used to combine any number of queries; a UNION ALL statement can be used to combine a maximum of two queries. 3. A UNION statement can only combine queries that have parallel fields in the SELECT list; a UNION ALL statement can combine queries with differing SELECT list structures. 4. A UNION statement cannot be used with aggregate functions; a UNION ALL statement can be used with aggregate functions. 5. There is no difference between the two statements; they are interchangeable.

2 Answers   Saman Bank, Sonata,

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What is pl sql package?

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What are the benefits of stored procedures?

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What are different types of joins ?

5 Answers   BirlaSoft,

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