SQL

What is WHERE Clause in MySQL? WHERE Clause in MySQL is a keyword used to specify the exact criteria of data or rows that will be affected by the specified SQL statement. The WHERE clause can be used with SQL statements like INSERT, UPDATE, SELECT, and DELETE to filter records and perform various operations on…

What is SELECT query in MySQL? SELECT QUERY is used to fetch the data from the MySQL database. Databases store data for later retrieval. The purpose of MySQL Select is to return from the database tables, one or more rows that match a given criteria. Select query can be used in scripting language like PHP,…

Steps to Create Database in MySQL Create Database in two ways 1) By executing a simple SQL query 2) By using forward engineering in MySQL Workbench As SQL beginner, let’s look into the query method first. How to Create Database in MySQL Here is how to create a database in MySQL: CREATE DATABASE is the…

What is ER Modeling? Entity Relationship Model (ER Modeling) is a graphical approach to database design. It is a high-level data model that defines data elements and their relationship for a specified software system. An ER model is used to represent real-world objects. An Entity is a thing or object in real world that is…

Normalization in a Nutshell Normalization is the process of structuring a database to reduce redundancy and improve consistency. In simple terms, it breaks large messy tables into smaller, well-organized ones. This ensures data is stored logically, making databases efficient, easy to maintain, and free from duplication or errors. What is Database Normalization? Database Normalization is…

What is Database Design? Database Design is a collection of processes that facilitate the designing, development, implementation and maintenance of enterprise data management systems. Properly designed database are easy to maintain, improves data consistency and are cost effective in terms of disk storage space. The database designer decides how the data elements correlate and what…

What is MySQL? MySQL is an open source relational database. MySQL is cross platform which means it runs on a number of different platforms such as Windows, Linux, and Mac OS etc. In this MySQL Workbench tutorial, you will learn- Why use MySQL? There are a number of relational database management systems on the market….

What is SQL? SQL is the standard language for dealing with Relational Databases. SQL can be used to insert, search, update, and delete database records. SQL can do lots of other operations, including optimizing and maintenance of databases. SQL Full Form SQL stands for Structured Query language, pronounced as “S-Q-L” or sometimes as “See-Quel”… Relational…

Before we learn about a database, let us understand – What is Data? In simple words, data can be facts related to any object in consideration. For example, your name, age, height, weight, etc. are some data related to you. A picture, image, file, pdf, etc. can also be considered data. What is Database? A…