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Interview Preparation

SQL Interview Questions and Answers

Name: SQL Interview Questions and Answers
Rating: 4.25 (129 reviews)

4.25

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2.25 Hrs

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SQL Interview Questions and Answers

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Great Learning Academy

Skills you’ll Learn

SQL Queries

Normalization

E-R Diagram

Sub-queries

About this Free Certificate Course

SQL is one of the essential requirements in tech industries. Data management has now become an integral part of all companies. Thus, every candidate must have a brief idea of SQL. DBMS is largely popular and is maintained by all industries to maintain their data. Hence, it becomes essential to prepare for SQL interview questions.

This free course will help you pass your SQL interviews by familiarizing you with all the critical SQL Interview Questions and Answers. Whether it's the role of an SDE or the role of a data analyst, SQL Questions are definitely asked in the interview. In any tech job role, one will be working with data, which has to be stored somewhere. If we have to extract specific data items from the entire dataset/table we have, we would need knowledge of SQL. Thus, understanding SQL and getting familiar with its queries becomes important. Hence, we are introducing this free SQL Interview Questions and Answers course through which you will go through SQL queries, Normalization queries, ER diagram queries, and sub-queries. You will also go through interview questions based on two projects called Broadband Management System and HR DBMS. This free course has all the essential SQL queries for interviews, and you will also learn to solve tricky SQL queries for interviews. To get to know all the SQL questions and answers enroll in this free SQL Interview Questions and Answers course and face the interviews with utmost confidence.

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Course Outline

Introduction to Hive Hands-On

Hive is a data warehouse used to support interaction between the user and HDFS. This course will give you a demonstration using sample problem statements for your better understanding.

Basics of SQL

Normalization E-R Diagram and Sub-queries

Broadband Management System

HR DBMS

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Certificate of completion

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SQL Interview Questions and Answers

Provided by

Great Learning Academy

SQL Interview Questions and Answers

2.25 Learning Hours . Beginner

Why upskill with us?

1000+ free courses

In-demand skills & tools

Free life time Access

10 Million+ learners

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Frequently Asked Questions

How do I prepare for an SQL interview?

There are a few frequently asked questions and a few important topics in SQL. It is more than sufficient to prepare them to crack interviews. Free courses offered by Great Learning on SQL interview questions and answers can guide you through them.

What are the important questions in SQL?

Questions will be usually asked on:

Key elements of a database
Relational keys
Joins
Select queries
Data modelling
Star schema
Snowflake schema
Dimension and fact table types
Commands in SQL
Types of queries

How do I start a SQL query?

SQL START QUERY starts/executes any query that is prepared or previously executed.

What is normalization in SQL?

Normalization is the process of restructuring a relational database with normal forms to reduce data redundancy and improve data integrity.

What are normalization rules in SQL?

There are 3 rules in normalization :

1. Every table should have:

a primary key
rows of equal length
no 2 columns with the same kind of data

2. Every table should have no columns depending only on the primary key(if the primary key is composite).

3. Every table should have no columns not depending on the primary key at all.

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