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Database management system

Database management system

Database management system definition

Database management system refers to software that serves as an interface between the database and end-users or application programs. It provides a systematic way to store, retrieve, update, and manage data in a structured manner, ensuring that data is consistently organized and remains easily accessible.

See also: database report, command line interface

Types of database management systems:

  • Relational database management system (RDBMS). It uses tables to store data and relationships between them. Examples include MySQL, PostgreSQL, Oracle, and Microsoft SQL Server.
  • NoSQL database management systems. They are designed for unstructured or semi-structured data and includes subcategories like document stores (MongoDB), key-value stores (Redis), column stores (Cassandra), and graph databases (Neo4j).
  • Object-oriented database management systems (OODBMS). It stores data in the form of objects, as used in object-oriented programming.
  • Hierarchical DBMS and Network DBMS. These are older models based on tree structures and flexible network models.

Database management system benefits:

  • Data storage. It provides a structured way to store large amounts of data, often using tables or schemas.
  • Data retrieval. It allows users or application programs to query the database, retrieve data, and present it in a structured manner.
  • Data manipulation. It supports operations such as insertion, deletion, and modification of the stored data.
  • Data integrity. It ensures data remains accurate and consistent using constraints, data validation, and integrity checks.
  • Security. It provides mechanisms to protect data from unauthorized access or tampering.

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