Database Management Systems
A Database Management System (DBMS) is a software package designed to define, manipulate, retrieve, and manage data in a database. It acts as an intermediary between the user or application programs and the physical database, abstracting the low-level storage details. A DBMS provides the tools to create and maintain the database structure (schema) and enforces rules for data integrity and security. Core functionalities include data querying and manipulation through a language like SQL, concurrency control to manage simultaneous user access, and backup and recovery mechanisms to protect data from loss or corruption, thereby ensuring efficient, reliable, and secure data handling.
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2. Data Models