Question at position 28 With the database approach, data descriptions are stored in a central location known as a: PC. server. mainframe. repository.单项选择题
A
PC.
B
server.
C
mainframe.
D
repository.

Question

Question at position 28 With the database approach, data descriptions are stored in a central location known as a: PC. server. mainframe. repository.

BlackTom AI · Accepted Answer

Repository is the term for a central store of data descriptions (metadata), so the correct choice is "repository."

1. Relevant knowledge points and concepts
- Data descriptions refer to metadata: definitions of data elements, formats, relationships, constraints, and semantics.
- The database approach separates data and application programs and stores metadata centrally so all users and applications can access consistent descriptions.
- Common terms for centrally stored metadata include data dictionary, data catalog, and repository.

2. Step-by-step reasoning
- Identify what “data descriptions” means: these are metadata records that describe the structure and meaning of stored data.
- Determine where metadata is placed in the database approach: the architecture requires a single, shared place so that multiple applications use the same definitions.
- Match the concept to the terminology: a “repository” is specifically defined as a centralized storage location for metadata or other persistent information used across systems.
- Evaluate the provided options against this definition to select the best match.

3. Calculations or intermediate steps
- No numerical calculations are needed. The logical steps above show how metadata and centralized storage map to the term repository.

4. Why the correct answer is correct
- A repository is explicitly a central location for storing and managing data descriptions and metadata in database systems. It ensures consistency, version control, and shared access to data definitions, which is precisely the intended function in the database approach.

5. Why other options are incorrect
- PC: A personal computer is hardware; it is not the conceptual central store for shared metadata in the database approach.
- Server: Although a server (hardware or software system) can host a repository, the term “server” describes the host rather than the metadata store itself.
- Mainframe: Like “PC” and “server,” this refers to a class of hardware; it does not denote the metadata catalog or data description store.

6. Conclusion
Because metadata must be stored centrally and the standard term for that centralized metadata store is “repository,” the correct answer is repository. This matches the provided answer.

Question at position 28 With the database approach, data descriptions are stored in a central location known as a: PC. server. mainframe. repository.单项选择题

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