Which statement about a structured repository is correct?

Which statement about a structured repository is correct?

• A. Any database is a structured repository with its structure represented in its metadata
• B. The data warehouse is the only structured repository
• C. An operational database cannot be a structured repository
• D. A data mart has no metadata

Answer: (A)

A structured repository is a storage system organized by a defined model with a schema and descriptive metadata that explains that structure. A database fits this idea because it stores data in tables with defined columns, types, and constraints, and it keeps metadata in system catalogs that describe those objects. That means any database inherently represents its organization and rules in metadata, making it a structured repository. This understanding also clarifies why the other statements aren’t correct. A data warehouse isn’t the only structured repository; operational databases and data marts are structured repositories as well, since they use schemas and metadata to define and describe their data. An operational database can indeed be a structured repository, not excluded from being structured. A data mart does have metadata; saying it has none would ignore the metadata that describes its data sources, schemas, and mappings.

A structured repository is a storage system organized by a defined model with a schema and descriptive metadata that explains that structure. A database fits this idea because it stores data in tables with defined columns, types, and constraints, and it keeps metadata in system catalogs that describe those objects. That means any database inherently represents its organization and rules in metadata, making it a structured repository.

This understanding also clarifies why the other statements aren’t correct. A data warehouse isn’t the only structured repository; operational databases and data marts are structured repositories as well, since they use schemas and metadata to define and describe their data. An operational database can indeed be a structured repository, not excluded from being structured. A data mart does have metadata; saying it has none would ignore the metadata that describes its data sources, schemas, and mappings.