Introduction Of Unix

UNIX is a popular operating system ¬†for more than two decades which was first developed in the 1960s, and has been under constant development ever since.It is so popular¬†because of its multi-user, multi-tasking environment, stability, portability and powerful networking capabilities.By operating system, we mean the suite of programs which make the computer work. It is a layer between the hardware and the applications that run on the computer. » Read more

Where Vs Having Clause in SQL

While working with SQL, one of the question which often creates confusion is whether to use where or having clause.Though it appears that both clauses do the same thing, they do it in different ways.Here in this article, I will try to highlight all the major differences between WHERE and HAVING, and things you should be aware of, when using either WHERE or HAVING. » Read more

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