Programador Junior Interview Questions

1,068 programador junior interview questions shared by candidates

1. difference between union and unionall? 2. Difference between primary key and unique key? 3. difference between having clause and where clause? 4. difference between delete and truncate commands? 5. what is de-normalization? 6.different types of indexes?which one is fastest?why?
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Junior Programmer

Interviewed at Rheal Software

3.6
Jan 28, 2016

1. difference between union and unionall? 2. Difference between primary key and unique key? 3. difference between having clause and where clause? 4. difference between delete and truncate commands? 5. what is de-normalization? 6.different types of indexes?which one is fastest?why?

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