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find the primary and foreign key existence
faiz khan
Jun 13 2017 2:59 AM
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i have two table employee table and department table.
in employee table primary key table and foreign key in department table.
i am inserting data using primary key and foreign key.once i inserting duplicate data in department table so i am getting error.
i want to check if the value is already exsist in department table.please give me some links where i can check some examples
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