Explain about various levels of constraint.

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Is primary key an index?

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What are pl/sql cursor exceptions?

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Hi Everyone, How to get fist and last record from a table in oracle? Thanks in advance

13 Answers   IBM,

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write a query to display diference between two dates in sql server

2 Answers  

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what is a stored procedure? : Sql dba

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what is 'mysqldump'? : Sql dba

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Which table is left in left join?

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i have a customer table. trans_id trans_date trans_amt debit_credit_indicator 001 01-JAN-13 1099 cr 001 12-JAN-13 500 db 002 24-FEB-13 400 db 002 23-MAR-13 345 cr 001 18-APR-13 800 cr 002 15-MAR-13 600 db 001 12-FEB-13 200 cr i want like this output. trans_id trans_amt debit_credit_indicator i want get highest credit amount and lowest credit amount and highest debit amount and lowest debit amount for each trans_id.

2 Answers   Oracle,

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What is normalization in a database?

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Does sql backup shrink transaction log?

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Is sqlite thread safe?

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