Explain the components of sql?
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what is acid property in database? : Sql dba
in table there r so many rows write a query which two rows r updated last two day befor?
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How to retrieve a second highest salary from a table? Note:Suppose salaries are in duplicate values eg: Name Sal Malli 60000 Pandi 60000 Rudra 45000 Ravi 45000
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