what is difference between foreign key and reference key

3 Answers   AZTEC, Infosys,

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Please send me Informatica 8.1 certification dumps, my mail id mona85gupta@gmail.com

0 Answers  

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What is Private Database Link ?

1 Answers  

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How can we manage the gap in a primary key column created by a sequence? Ex:a company has empno as primary key generated by a sequence and some employees leaves in between.What is the best way to manage this gap?

2 Answers   Infosys,

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How to install oracle odbc drivers?

0 Answers  

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How to run create database statement again?

0 Answers  

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How to connect to a local oracle 10g xe server?

0 Answers  

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how to get count of tables in particular database in Oracle?

3 Answers  

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How to create a table interactively?

0 Answers  

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Difference between primary key and unique key ?

77 Answers   Accenture, B2B Software Technologies, Cognizant, HP Finsoft, IndiaNIC, Karomi Technology, Keane India Ltd, L&T, Onward eServices, R Systems, Shakti, Techtic Solutions,

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I just want to maintain data like an employee can belongs to 3 or more departments . We can resolve this by using composite key but it avoids normalization rules. So Can anyone tell me how can I maintain data.

0 Answers   IBM,

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Explain the dml?

0 Answers  

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