Task 021: A tool is an artefact that allows to work with components.

[mariorey]

The system must store the following data about them: a name (not blank, shorter than 101 characters), a code (pattern “^[A-Z]{3}-[0-9]{3}(-[A-Z])?$”, unique), a technology (not blank, shorter than 101 characters), a description (not blank, shorter than 256 characters), a retail price (zero or positive), and an optional link with further information.