Final answer:
A group of similar rows or records is known as a file, which contains multiple records that represent individual instances or items within a database or spreadsheet.
Step-by-step explanation:
A group of similar rows or records in a database or spreadsheet is known as a file. To elaborate, a file consists of multiple records, each of which typically represents a separate instance or item.
For example, in a database for a library, there might be a file for all the books, where each row represents a different book, containing fields for the book's title, author, ISBN, and so on.
Similarly, in a spreadsheet tracking inventory, each row in the file could represent a different product, with fields for product name, number in stock, and price. It's essential to understand that a file is a collection of related records that are treated as a unit for the purpose of data retrieval and storage.