Which term refers to a type of nonrelational database that uses a simple key-value method to store data?

Which term refers to a type of nonrelational database that uses a simple key-value method to store data?

• A. Metadata
• B. Blob Storage
• C. Key-Value Pair
• D. Emulation

Answer: (C)

Key-value stores are a type of nonrelational database that store data as simple pairs: a key that identifies the data and a value that holds it. This model is fast for lookups and flexible since there’s no fixed schema. Among the options, the term that best matches this concept is “Key-Value Pair,” because the basic unit stored in such a database is indeed a key paired with its value. The other terms describe different ideas: metadata is data about data, blob storage is for binary large objects, and emulation means mimicking another system.