Refer to figure.
EASA learning objective 022.11.02.01.01 states: ‘Explain the purpose of, and describe typical content of, the navigation database.’

A database is a digital repository for storing information.

The FMS navigation database contains all the information that would previously been published on paper charts and approach plates, such as :

• Airports
• SIDs
• STARs
• Waypoints
• Approaches
• Runways
• Radio Aids

These databases are controlled by a system known as Aeronautical Information Regulation and Control (AIRAC) and are valid for 28 days. The flight management computer (FMC) has 2 navigation databases loaded (current and next) to ensure that a valid database is always available. Because the information contained in the database is critical to flight safety its contents are read only so pilots are not able to change any of the data contained in it.

The Flight Management Computer (FMC) accesses the navigation database to retreive stored navigation information when constructing flight plan routes and providing other navigational data.

It contains data used to calculate predictions for fuel used and estimated remaining fuel throughout a flight --> INCORRECT. The FMS uses information contained in the perfomance database and its own ETA calculations to predict fuel consumption.

It provides navigational guidance and enable the aircraft to follow established flight procedures --> INCORRECT. A database only stores data, the FMC provides guidance information.

It integrates FMS positions with navigation data to provide navigational guidance during flight --> INCORRECT. A database only stores data, it can't integrate anything!

It stores route and instrument flight procedure information in the appropriate data format --> CORRECT. The purpose of a database is to store information, the navigation database stores navigation information that the FMC can access when required.