Explain the difference between Right Join and Full Outer Join in SQL.

SQL - Right Join vs Full Outer Join

SQL Joins

What is a Self Join in SQL, and how is it used?

SQL - Self Join (SQL)

You are designing a database to store information about university students and courses. Explain the concept of normalization in the context of database design and describe the benefits it brings to data organization.

SQL - Normalization

Normalisation

What is the purpose of the GROUP BY clause in SQL?

SQL - GROUP BY

SQL - GROUP BY Clause

Explain the difference between WHERE and HAVING clauses in SQL.

SQL - WHERE vs HAVING

SQL - HAVING Clause

What is a Common Table Expression (CTE) in SQL, and how is it used?

SQL - Common Table Expressions (CTEs)

Common Table Expressions (CTEs)

SQL - View

SQL Views

Why is indexing important in a database, and how does it improve query performance?

SQL - Indexing

SQL - CREATE Command

Explain the difference between stored procedures and functions in SQL.

SQL - Stored Procedures vs Functions

Stored Procedures

Explain the key differences between using a database and using spreadsheets for data management.

SQL - Database vs Spreadsheets

Database vs Spreadsheets

Explain the difference between a table and a schema in SQL.

SQL - Schema

Database Schema

You are tasked with creating a database to store information about employees in a company. How would you design tables and define a schema to represent employee details, ensuring data integrity and efficient querying?

SQL - Designing a database

What is the difference between CHAR and VARCHAR datatypes in SQL?

SQL - Datatypes

SQL Data Types

Explain how window frames work in SQL window functions.

SQL - Window functions

Window rank functions (SQL)

What is the difference between DDL and DML in SQL?

SQL - DML VS DDL

SQL - DDL

Explain the difference between INSERT and UPDATE statements in SQL.

SQL - INSERT vs UPDATE

SQL - DML

What is the purpose of CASE statements in SQL?

SQL - CASE Statements

SQL - CASE Statement

Explain the importance of ACID properties in the context of database transactions.

SQL - ACID Properties

DBMS ACID Properties

What is a subquery in SQL, and how is it used?

SQL - Subqueries

Non Correlated Subqueries

How would you use the RANK() function to retrieve the top three highest scores in a table?

SQL - RANK function

Open Course

Tryouts | Practice for your next Tech Interview

Elevate your SQL expertise with Newton School's immersive Tryouts. Access subjective audio assignments tailored to enhance your SQL proficiency. Prepare for interviews with real-time questions and automated evaluations, ensuring you stand out in the competitive tech landscape.

Explore Newton School

Tryouts

Most Solved Questions