A program that searches a large database to find matching items is best described as what?

• A. Database engine
• B. Search engine
• C. File search
• D. Indexer

Answer: (B)

The main idea here is identifying the function that locates items across a large collection and returns those that match a user’s criteria. A search engine is the best fit because its purpose is to index a big set of data and provide fast retrieval of items that match a query, often ranking them by relevance. This contrasts with a database engine, which focuses on storing data and processing structured queries; a file search looks for files in a filesystem rather than items inside a database; and an indexer is a component that builds an index to speed searches but does not perform the search itself. So the program described is best described as a search engine since it’s about finding matching items efficiently across a large dataset.