Interview Questions – Page 3 – It Interview Guide

Inner Join vs Outer Join: What is the Difference?

Are you looking forward to a programming interview soon? Then take a few moments to look over one of the most common question interviewers will ask you. The dissimilarity between inner join vs outer...

How Can the Correlated Subquery be Efficient?

A SQL correlated subquery is just a query that carries over values from the outer query. This means that there is a WHERE statement using data from the outer query, or the first query....

What’s Tail Recursion and How Can You Solve It?

Tail recursion is one issue most programmers have to face in their careers. In this article, we provide you with a tutorial on one of the most common programming questions you are likely to meet in...

How to Use the CASE Statement in SQL

SQL as a scripting language is a valuable tool for data analysis. In case you are looking forward to an interview on SQL, make sure to sharpen your knowledge of how to use the case statement in SQL....

How Does Referential Integrity Work?

Databases form an integral part of most organizations as they help us?store, manipulate, organize, and access data. In a database interview, most interviewers ask about?how referential integrity...

What’s a Clustered Index and How Does it Work?

A clustered index is a valuable tool in the SQL Server. If you are interested in the field of scripting and creation of web pages, you need to know what clustered indexes are. In any event, you will...