What is the SQL database catalog called?

Question

In SQL Server it is referred to as the System Catalog. In DB2 it is referred to as either the DB2 Catalog or System Catalog. In MySQL it is referred to as the Information Schema. You can think of the system catalog as a metadata repository for your databases. 2 мар. 2017 г.

What is a SQL database catalog?

The system catalog consists of tables describing the structure of objects such as databases, base tables, views, and indices. (These tables are called system base tables.) The Database Engine frequently accesses the system catalog for information that is essential for the system to function properly.

What is a database system catalog?

The system catalog consists of tables and views that describe the structure of the database. Sometimes called the data dictionary, these table objects contain everything that the database knows about itself. Each system catalog table contains information about specific elements in the database.

Is a catalog a database?

A data catalog belongs to a database instance and is comprised of metadata containing database object definitions like base tables, synonyms, views or synonyms and indexes. The SQL standard lays down a regular method for accessing the data catalog known as the information schema, though not all databases use this.

Is catalog same as database?

A library catalog allows you to search for items owned by a specific library, including books, movies, journals, magazines, music scores, government documents, and more. Library databases allow you to efficiently search for published information such as magazine, journal, and newspaper articles.

Expert · Answer