Currently, the Introduction section is based on the Kitchensink project.

Starting with DataPersistence right after completing introduction has the following issues:

a) Leftover content from kitchensink (JSF stuff, Member* classes)
b) Event class created in Introduction is a simplified version of TicketMonster version
c) Import.sql file of introduction is a very simplified version.

Creating correctly the code described in DataPersistence section and forth requires removing a), as well as ignoring b) and c) and recreating things from scratch.