Explain natural key?

0 Answers  

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Differentiate between extension & intension?

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Design an ETL process( batch job/script)from source to starting that u will not be dependent on the source in the near future?please elobarate details on what are things to consider.if you'd like to do a diagram that will be great.please answer it

0 Answers  

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How to fetch/retrieve the data from hieranchical database and put it into the relational database? for e.g I want to extract the data from IMS DB2 database which is a hierarchical db and load that data into the relational database which is a SQL server.Are there any tools available for directing extracting data from hierarchical db and loading into the relational database (SQL server)?

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What is OQL?

4 Answers  

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Is it possible to update AS400 database record while reading it with no lock

1 Answers  

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Explain data independence & its types.

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What is global database name?

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what is Normalization means..?

8 Answers   AZTEC, Bank Of America, Infosys, TCS,

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Two tables emp(empid,name,deptid,sal) and dept(deptid,deptname) are there.write a query which displays empname,corresponding deptname also display those employee names who donot belong to any dept.

0 Answers   Amazon,

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How to do Data integrity testing? Who does this testing (Developer or tester)?

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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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