MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -So, storing the relational schemas and other metadata about the relations in a structure is known as Data Dictionary or System Catalog.

Detailed explanation-2: -Metadata in DBMS is characterized as data about data. It describes the context and information about data, the way that data is stored and the various relations among data. Metadata in a relational DBMS stores data about Constraints, Table Relationships, Data Types, Columns, Tables, and so on.

Detailed explanation-3: -A relational (database) schema is a set of table definitions (stored base tables or derived views), constraints, and derivation rules. A table scheme is a named set of attributes (columns) that draw their values from domains. Each column, or column set, spanned by a minimal uniqueness constraint is a candidate key.

Detailed explanation-4: -Structural metadata is metadata that describes the structure, type, and relationships of data. For example, in a SQL database, the data is described by metadata stored in the Information Schema and the Definition Schema.