Design and realisation of a knowledge base

Textual case scenario "Request for registration"

Case name	Request for library registration
Actor	Visitor
Scenario	Succeeded
Preconditions	User have at least twenty earned points
Actions	The user selects : <request registration> button The administrator system analyze visitor request (he can accept or refuse according to many criteria) if the administrator accepts; system presents an interface for visitor to put these informations The user fill the registration form The system add this The system displays a message indicating the success of the registration The system create a new personal directory for this user The administrator gives him privilege to consult library and upload/download documents from.
Post condition	The system creates a new file in the database space
Variants	The user enters a wrong file / not permitted type The system sends an error message