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Tutorial Series: Database

A database is a collection of data that is organized in a way that allows it to be easily accessed, managed, and updated. Databases are used in a wide range of applications, from small personal projects to large enterprise systems.

A database typically consists of one or more tables, which are composed of rows and columns. Each row in a table represents a single record, and each column represents a specific attribute of that record. For example, in a database of customer information, a table might have columns for first name, last name, email address, and phone number.

Databases can be managed using a database management system (DBMS), which provides tools for creating, updating, and querying data. Some popular DBMS systems include MySQL, Oracle, Microsoft SQL Server, and PostgreSQL.

Databases are used in many different applications, such as e-commerce websites, inventory management systems, and social media platforms. They are an essential tool for storing and managing large amounts of data and are often used in conjunction with other technologies such as web servers and programming languages to create robust and scalable applications.

SQL: How to Create A Database with SQL Query

The CREATE DATABASE statement is used to create a new database. When you create a database, you are essentially creating a container that will hold tables, indexes,...

SQL: How to Delete A Database with SQL Query

Deleting a database is an essential operation in SQL because it allows you to remove unwanted or obsolete data that is no longer needed. This can help to improve...

SQL: How to Create and Delete A Table with SQL Query

CREATE TABLE is a command used in SQL to create a new table in a database. When you create a table, you must specify the table name and the names and data types...

SQL: How to Insert and Select Data with SQL Query

INSERT and SELECT are two important commands used in SQL to manipulate data in a database. INSERT is used to add new data to a table by specifying the values to...

SQL: How to Use Where Clause in SQL

The WHERE clause is used to filter the results of a SELECT statement based on one or more specified conditions. It is used to retrieve only the data that meets certain...

SQL: How to Use Like & Order By Clause in SQL

The LIKE clause in SQL is used to filter results based on a pattern or substring match. It is particularly useful when searching for specific patterns within text...

SQL: Understanding Group By Clause, Distinct Keyword, and Sorting Results

The GROUP BY clause is used in SQL to group the results of a SELECT statement based on one or more columns. It works in conjunction with aggregate functions, such...

Select first row in each GROUP BY group?

Introduction to GROUP BY in SQLIn SQL, the GROUP BY clause is a powerful tool for summarizing data. It works by organizing rows with matching values in one...

How to reset or change the MySQL root password in UBUNTU 22.04?

IntroductionMySQL stands as one of the most ubiquitous database management systems, powering countless applications and websites across the digital landscape....

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