What is (RDBMS) Relational Database Management System

What is a Relational Database Management System | What is RDBMS?

A Relational Database Management System (RDBMS) is a database management system based on the relational model. In it, data is stored in tables, and the relationships between the data are also stored in tables. In an RDBMS, data can be accessed without changing the various forms of the table.

The software used in a relational database is called a Relational Database Management System (RDBMS). It is very powerful because it is easy to store and operate data in it. A key feature of an RDBMS is that multiple tables can be stored in a single database, and relationships can be established between those tables.

A relational database management system is an advancement of the database management system. Major RDBMS software includes MS Access, MS SQL Server, and Oracle.

Why Use a Relational Database?

An RDBMS is based on the relational data model in which data is stored in the form of rows and columns. The relationships between different tables in the database are also stored in the form of tables. The main reasons for using an RDBMS are as follows:

• Organizes data in the form of tables.
• Data can be stored in the form of rows and columns.
• Each row can be identified by a unique identity (Primary Key).
• Creates indexes to retrieve data quickly.
• Relationships can be established between two or more tables.
• Provides multi-user accessibility which can be controlled by individual users.

Major Software

• MS Access: A personal database system developed by Microsoft.
• MS SQL Server: Microsoft's enterprise-grade database management system.
• Oracle: A powerful and reliable database management system used by large organizations.
• MySQL: A popular open-source RDBMS widely used in web applications.
• PostgreSQL: An advanced open-source RDBMS that supports complex data types.

Advantages

• Maintains data integrity and consistency.
• Easy to store, update, and delete data.
• Represents relationships between data in a clear and organized manner.
• Provides the facility to access data quickly and efficiently.
• Ensures data security and privacy.
• Manages data efficiently in a multi-user environment.

Applications

• Banking: To manage customer information and financial transactions.
• Healthcare: To store patient information and medical records.
• E-commerce: To manage product, order, and customer data.
• Education: To store student and teacher information.
• Telecom: To manage customer and network data.
• Human Resources: To store employee, salary, and payroll information.

History of RDBMS

• 1970: Edgar F. Codd proposed the relational model.
• 1974: IBM developed the first RDBMS, System R.
• 1980: Oracle released the first commercial RDBMS.
• 1990: Microsoft launched MS SQL Server.
• 2000: Open-source RDBMS, like MySQL and PostgreSQL, became popular.