What do you mean by database management system (DBMS)? Discuss functions and components of a database management system (DBMS).

A Database Management System (DBMS) is a software system designed to efficiently manage, store, retrieve, and manipulate data in databases. It acts as an interface between the user and the database, ensuring data organization, security, and integrity while supporting multiple users and applications. DBMS is crucial in Information Communication Technologies (ICT) as it enables the structured handling of large volumes of data across various applications like business, healthcare, education, and e-commerce.

Functions of a DBMS

1. Data Storage, Retrieval, and Update
   A DBMS allows users to store data systematically and retrieve it efficiently. It supports data insertion, deletion, and updates while ensuring data integrity.

2. Data Security
   A DBMS enforces access controls, authentication, and authorization mechanisms to ensure that only authorized users can access or modify data.

3. Data Integrity and Consistency
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