what is primary key,unique key, foreign key? can u teach me in simple language?

44 Answers   Banking, CMC, CTS, HCL, Infosys, Keggfarms, SkyEss, Sunrise, TCS, Web Synergies, Wipro,

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What do you mean by foreign key and primary key?

0 Answers   Zensar,

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A lowest level of security by most RDBMS is

0 Answers   Baan Infotech,

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if we have set auto differencial back up then waht is difference between 1.appen to media 2.over right the existing media

1 Answers   Indian Web Technology,

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what are different types of datasets? what are different characteristics or properties of those datasets? what are the advantages and disadvantages of each dataset on each other?

1 Answers   OVGU,

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What is the advantage of varchar2 over char?

0 Answers   ADITI,

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What is the use of default key?

0 Answers   Abacus,

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List various types of log-based recovery in DBMS.

0 Answers   Verifone,

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What is a database string?

0 Answers  

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Integrity constraints means..? how many and what are they?

4 Answers   AZTEC,

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5. Explain about relational algebra.

0 Answers  

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How is image stored in database?

0 Answers  

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