so employers test candidates on various concepts ranging from basic to advanced-level queries. This blog covers common SQL interview questions and their answers to help you succeed in your next interview.
Basic SQL Interview Questions for Freshers 1. What is the difference between a primary key and a unique key? Primary Key: The primary key is used to uniquely identify every record in a table. It ensures that NULL values are not present in the table. Unique Key: Unique key also identifie...
The following are the most popular and useful SQL interview questions and answers for fresher and experienced candidates. These questions are created specifically to familiarise you with the types of questions you might encounter during your SQL interview. According to our experiences, good interviewers ...
SQL is an important tool in a number of careers. Our expert lays out some of the most common questions you can expect in an SQL interview.
Intermediate SQL JOINS Interview Questions 11. Distinguish between nested subquery, correlated subquery, and join operation. Subquery–Queries can be embedded in other queries. Therefore, an outer query is called the main query and the Internal queries are called subquery. Nested query–The inner qu...
SQL Interview Questions http://career.guru99.com/top-50-sql-question-answers/ 1. What is DBMS? A Database Management System (DBMS) is a program that controls creation, maintenance and use of a database. DBMS can be termed as File Manager that manages data in a database rather than ...
This blog on SQL Interview Questions and Answers is intended to help you through a variety of SQL questions based on topics such as MS SQL Server, MySQL.
Frequently Asked SQL Interview Questions 1. What is a Database? Adatabase refers to a structured data collection that can be stored, managed, and retrieved from a remote or local computer system. Databases can become pretty complex and are built with a fixed design and modeling approach. ...
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There are mainly two types of indexes in SQL Servers Clustered Index and Non-Clustered Index. Conclusion Above is the list of common interview questions which you can expect as an SQL server developer. The answers are for your reference you can read them in detail using other sources or artic...