Pulling Data from Multiple Tables
David M W Powers · Apress eBooks · 2014
As I explained in Chapter 11, one of the major strengths of a relational database is the ability to link data in different tables by using the primary key from one table as a foreign key in another table. The phpsols database has two tables: images and blog . It's time to add some more and join them, so that you can assign categories to blog entries and associate images with individual articles. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.