What Does Flat File Mean?

A flat file database is a collection of records in which the data follows a uniform format and follows rules on value types where applicable. The database is flat because every line only holds one data input, depending on the categorization of the columns.

Techopedia Explains Flat File

Structure of Flat File Databases

In a flat file database, the first row in the database contains the keys and fields to identify and categorize data points. The following rows all represent data points where each row—or in some cases, a collection of cells—represents a single record.