Answer / nishi

Indexes are automatically maintained and used by Oracle. Changes to table data are automatically incorporated into all relevant indexes.

what is RAID technology?which is better RAID 0+1 OR RAID 5?

2 Answers   CSC,

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what is difference between where clause and having clause?

13 Answers  

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What is an Index ?

2 Answers  

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In my table i have 4 columns with 100 records but in that 4 columns one column contains all NULL values so can i add NOT NULL CONSTRAINT on that column......... ok if it is not possible, can i add NOT NULL CONSTRAINT from 101 Record Onwards?

4 Answers   Cap Gemini,

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What is oracle database client?

1 Answers  

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wirte the syntax of update query?

3 Answers   IBM,

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Can we insert data in view oracle?

1 Answers  

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Why we choose emp number as primarykey?

4 Answers  

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How to upsert (update or insert into a table)?

1 Answers  

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Explain the difference between a procedure and a function?

1 Answers  

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What is the difference between truncate & delete command?

1 Answers  

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what is shell?

2 Answers   Microsoft,

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