Interview Question

Difference between delete and truncate in oracle database ?- SQL Interview question

In my previous blog , I have written about the future of oracle dbs jobs. If you are going for sql or oracle interview then most of the interviewer expect that you should know the difference between delete and truncate in oracle database. let’s see the difference between delete and truncate statement in oracle database. …

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Difference between var and val in spark- Interview question

Var keyword is just similar to variable declaration in Java whereas Val is little different. Once a variable is declared using Val the reference cannot be changed to point to another reference. This functionality of Val keyword in Scala can be related to the functionality of java final keyword. Val refers to immutable declaration of …

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