When should I use nosql database?
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Is foreign key mandatory?
what is a sub query?how will you calculate working days in a month using sub query?
Define concurrency control. : Transact sql
Can you skip header records while loading? : aql loader
How to prepare for oracle pl sql certification?
why should required nested tables, Object types, partition tables and varying arrays. what is the difference between these are all. give me example with explanation.
i have a table eno dno sal 1 10 200 2 10 150 3 10 100 4 20 75 5 20 100 i want to get sal which is less than the avg sal of thri dept. eno dno sal 2 10 150 3 10 100 4 20 75
Does a primary key have to be a number?
What is sqlite format?
what is difference between delete and truncate commands? : Sql dba
What are the pre requisites?
Can we connect to postgresql using sql developer?
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