Description: The system catalog in database management systems is a fundamental structure that stores metadata about database objects and their properties. This catalog provides critical information about tables, views, schemas, users, and other elements that make up the database. The metadata includes details such as the object’s name, type, the columns it contains, the data types of these columns, applied constraints, and relationships between different objects. Additionally, the system catalog allows administrators and developers to track the state and configuration of the database, facilitating management and performance optimization. The ability to access this information efficiently is essential for database administration, as it enables users to understand the structure of their data and perform complex queries effectively. In summary, the system catalog is a vital tool for the operation and maintenance of database systems, ensuring that users can interact with their data in an informed and efficient manner.
