What is Schema?
| Data Catalog |
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Synonym: Data Catalog. The name of the collection of metadata describing the structure and constraints of a database. The terms schema and Data Catalog are used synonymously in different literature on database management systems to specify the location of the information describing the content and structure of a database. Most common components include: entity and attribute names, the set of attribute types describing each entity type, the information type and domain for each attribute, inter-entity type relationships, cardinality constraints, data locations, associated indexes, and usage restrictions. The contents of the schema are defined using the information definition language, DDL, of the database management system. |
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