Which is an advantage of using a flat file instead of a relational database? A flat file is easier to set up.
It is easier to assign foreign keys to a flat file.
A flat file reduces storage of redundant data.
A flat file reduces storage of irrelevant data.

An advantage of using a Flat file instead of a relational database is;

A Flat file is easier to set up

Explanation:

The Flat file database is a database developed by IBM and it is the primary type of database for storing data in text files such as in Microsoft Excel

Individual database records are stored in a line of plain text and are separated from other records by delimiters including commas and tabs

The advantages of a Flat file database are;

1) The records of the database are stored in a single place

2) A Flat file is easier to set up with Microsoft Excel or other office applications

3) The Flat file database is easier to comprehend and understand

4) The records of the database can be simply stored

5) Simple criteria can be used for viewing or extracting data from a Flat file database

(because i need 20 chars)