Data About Data (Metadata): Meaning, Examples, and Exam Answer
The phrase “data about data” most commonly refers to metadata. In information systems, metadata records details such as data definitions, formats, origins, timestamps, and constraints so users and software can interpret the underlying data correctly.2
To answer the multiple-choice question: among the options—(i) Directory, (ii) Warehouse, (iii) Sub Data, (iv) Meta Data—the correct choice is (iv) Meta Data.
Key terms in this section: metadata • data warehouse • catalog • directory.
Footnotes
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Metadata (Wikipedia) - Overview of metadata as information that describes other data. ↩
-
Metadata — Information Resources Management (NISO/related overview references) - Metadata as descriptive information enabling discovery/interpretation (publisher/organization overview). ↩
Metadata: Data about Data (Concept Overview)
In contrast:
- data warehouse is a storage and integration architecture for analytics workloads, not the general concept of “data about data.”
- directory typically refers to a listing/namespace or service that organizes access to resources; it is not the specific “data about data” concept used in databases and data management curricula.
- “Sub Data” is not a standard, widely used database term for “data about data.”
- “Meta Data” directly matches the definition of metadata as descriptive information about data.2
Footnotes
-
Data warehouse (Wikipedia) - Definition of a data warehouse as a repository for analytics integrating multiple sources. ↩
-
Directory (Wikipedia) - General concept of a directory as an organized listing/namespace/access mechanism. ↩
-
Metadata (Wikipedia) - Overview of metadata as information that describes other data. ↩
-
Metadata — Information Resources Management (NISO/related overview references) - Metadata as descriptive information enabling discovery/interpretation (publisher/organization overview). ↩
Exam Strategy
When you see the phrase “data about data,” your target keyword is almost always metadata—not storage systems like warehouses.
How to Solve the Multiple-Choice Question
- 1Step 1
“Data about data” is a definition clue, pointing to metadata.
- 2Step 2
Select the option that literally corresponds to metadata: “Meta Data.”
- 3Step 3
Remove “Warehouse” (analytics storage) and “Directory” (naming/listing/access structure), unless the option explicitly defines metadata.
- 4Step 4
Metadata is descriptive information that helps interpret and manage data—consistent with the question wording.
Option Match to “Data About Data”
How directly each option aligns with the definition of metadata.
Common Confusions
Final Answer
(iv) Meta Data
This option directly corresponds to the concept of metadata, which is defined as “data about data.”2
Footnotes
-
Metadata (Wikipedia) - Overview of metadata as information that describes other data. ↩
-
Metadata — Information Resources Management (NISO/related overview references) - Metadata as descriptive information enabling discovery/interpretation (publisher/organization overview). ↩
Metadata Quick-Check Deck
Knowledge Check
Which of the following refers to the “data about data”?