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| Question |
how to find nth lowest salary |
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Answer Posted By |
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Question Submitted By :: Guest |
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I also faced this Question!! |
© ALL Interview .com |
| Answer | For All SQL , Tested in PostgresSQL : Javedcc@gmail.com
SELECT * FROM <Table_Name> A
WHERE N = (SELECT COUNT(DISTINCT B.Column_Name ) FROM
<Table_Name> B WHERE A.Column_Name >= B.Column_Name)  |
| Mohd Javed
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| Question |
when will data in the data base is updated |
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Answer Posted By |
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Question Submitted By :: Chaitanya |
| This Interview Question Asked @ IEG |
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I also faced this Question!! |
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| Answer | when ever we use DML commands |
| Chaitanya
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| Answer | Please find the below link which is related to Practical
PostgreSQL.
http://www.commandprompt.com/ppbook |
| Rajat
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| Question |
what is the advantage of RAID |
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Answer Posted By |
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Question Submitted By :: Bhavani |
| This Interview Question Asked @ Wipro |
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I also faced this Question!! |
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| Answer | It maintains backups |
| Bhavani
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| Answer | It is a storage device, like floppy or hard disk
RAID - Redundant Array of Independant Disks
RAID refers to a hard disk technology which can be used to
speed up data transfer and/or provide disk redundancy
through disk system fault tolerance.
RAID configurations are commonly found in data critical
applications. |
| Mohd Javed
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