PHP Objects, Patterns, and Practice, Second Edition

CHAPTER 13Database Patterns

Most web applications of any complexity handle persistence to a greater or lesser extent. Shops must recall their products and their customer records. Games must remember their players and the state of play. Social networking sites must keep track of your 238 friends and your unaccountable liking for boy-bands of the '80s and '90s. Whatever the application, the chances are it's keeping score behind the scenes. In this chapter, I look at some patterns that can help.

This chapter will cover

• The Data Layer interface: Patterns that define the points of contact between the storage layer and the rest of the system
• Object watching: Keeping track of objects, avoiding duplicates, automating save and insert operations
• Flexible ...