Relational Database Management involves organizing data into tables that can be linked or related to one another. Each table consists of rows and columns, where rows represent individual records and columns represent attributes of those records. This structure allows for efficient data retrieval and manipulation using a language called SQL (Structured Query Language). In a relational database, relationships between tables can be established through keys, such as primary keys and foreign keys. This enables users to perform complex queries and maintain data integrity. Popular relational database management systems include MySQL, PostgreSQL, and Oracle Database.