Current web applications utilize a wide range of data sources, including flat files, web services, feeds, and databases. Content management systems exist that are based on each of these sources, or combinations of them, but most of them store their content in databases.
The CMS you are developing in this book will use a MySQL database. What MySQL lacks in enterprise features is more than made up for by its simplicity and speed. The vast majority of LAMP  hosting packages include at least one MySQL database.
In this chapter, you will learn how to interact with databases using Zend Framework's database abstraction layer,
Zend_Db. Zend_Db is an object-oriented interface to SQL database systems. You will ...