August 2008
Intermediate to advanced
703 pages
16h 10m
English
Content preview from Pro Drupal Development, Second Edition
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CHAPTER 5Working with Databases
Drupal depends on a database to function correctly. Inside Drupal, a lightweight database abstraction layer exists between your code and the database. In this chapter, you'll learn about how the database abstraction layer works and how to use it. You'll see how queries can be modified by modules. Then, you'll look at how to connect to additional databases (such as a legacy database). Finally, you'll examine how the queries necessary to create and update database tables can be included in your module's .install file by using Drupal's schema API.
Defining Database Parameters
Drupal knows which database to connect to and what username and password to issue when establishing the database connection by looking in the ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.