Database Languages in DBMS

Introduction

Database languages are used to manage and manipulate data in a database management system (DBMS).

Data Definition Language (DDL): Used to define the structure of a database, including creating, altering, and dropping tables.
Data Manipulation Language (DML): Used to manipulate data in a database, including inserting, updating, and deleting data.
Data Control Language (DCL): Used to control access to a database, including granting and revoking permissions.
Query Language: Used to retrieve data from a database, including SQL (Structured Query Language).

Overview: SQL is a standard language for managing relational databases.
Commands: SQL commands include SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, and ALTER.
Benefits: SQL provides a powerful and flexible way to manage and manipulate data in relational databases.

Query-by-Example (QBE): A graphical query language that allows users to specify queries using a graphical interface.
4GL (Fourth-Generation Language): A high-level language that allows users to specify what they want to do with their data, rather than how to do it.

Data Management: Database languages provide a way to manage and manipulate data in a database.
Data Retrieval: Database languages provide a way to retrieve data from a database.
Data Security: Database languages provide a way to control access to a database and ensure data security.