A Relational Database Management System (RDBMS) is a type of database management software that is based on the relational database model. It is a widely used type of database management system in the IT industry and is used in many applications.
The key features of an RDBMS include:
Tables: Data is organized into tables, with each table having specific columns and rows. Columns represent different attributes of the data, while rows represent individual records.
Primary Key: Typically, a column is designated as the primary key in each table to ensure the uniqueness of each row. The primary key is used to identify rows and establish relationships between tables.
Relationships: RDBMS allow for the definition of relationships between tables, enabling data in different tables to be linked for complex queries and analyses.
SQL (Structured Query Language): SQL is used to access data in an RDBMS. It enables querying, inserting, updating, and deleting data.
Data Integrity: RDBMS provide mechanisms to ensure data integrity, including foreign key constraints, unique constraints, and transaction control.
Examples of widely used RDBMS systems include MySQL, PostgreSQL, Oracle Database, Microsoft SQL Server, and IBM Db2. RDBMS are employed in a variety of applications, including enterprise systems, e-commerce websites, financial systems, warehouse management systems, and more, where structured data needs to be efficiently and securely managed.
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