A flat-file database whose records have no relation to one another is a database that collects data in a clear text file. Every line of the text file carries one record, with fields parted by delimiters, such as tabs or commas. While it uses a plain structure, a flat-file database cannot carry multiple tables as a relational database can. There are no formations for indexing or identifying relationships among the records. A flat file can be a binary file or a common text file. Relationships can be gathered from the data in the database, but the database format itself does not address the relationships specific.