The database can, depending on the needs, be broken down into multiple XLS files. Typically, one XLS file can be created for each type of transport. The database is made up of:

An index table with the definition of the various types of components

A descriptive table for each component (containing the various models)

Support Cards/Tables

The preferred choice normally falls on the XLS format as a support database. By taking advantage of the ease of use and the great flexibility of Excel, the times for creating the support database are significantly reduced. The use of the terms sheet and table are to be considered interchangeable.