Book Image

Mastering phpMyAdmin 3.4 for Effective MySQL Management

Book Image

Mastering phpMyAdmin 3.4 for Effective MySQL Management

Overview of this book

phpmyAdmin is one of the most widely used open source applications, which is written in PHP. phpMyAdmin supports a wide range of operations with MySQL. Currently, it can create and drop databases, create/drop/alter tables, delete/edit/add fields, execute any SQL statement, manage keys on fields, manage privileges, export data into various formats and is available in 52 languages.phpMyAdmin is a web-based front-end to manage MySQL databases and has been adopted by a number of Open-Source distributors.Mastering phpMyAdmin 3.4 for Effective MySQL Management is an easy-to-read, step-by-step practical guide that walks you through every facet of this legendary toolóphpMyAdminóand takes you a step ahead in taking full advantage of its potential. This book is filled with illustrative examples that will help you understand every phpMyAdmin feature in detail.This is the official guide to this popular MySQL web interface. It starts with installing and configuring phpMyAdmin, including the phpMyAdmin Configuration Storage, which is the key to its advanced features. This is followed by configuring authentication in phpMyAdmin and setting parameters that influence the interface as a whole.You will also learn some advanced features such as defining inter-table relations with the advanced Designer module. You will practice synchronizing databases on different servers and managing MySQL replication to improve performance and data security. Moreover, you will also store queries as bookmarks for their quick retrieval.In addition to it, this book helps you to learn new features introduced in version 3.4.x such as users' preferences, producing charts and the visual multi-table query builder.
Table of Contents (27 chapters)
Mastering phpMyAdmin 3.4 for Effective MySQL Management
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Executing code with triggers


Triggers are code that we associate with a table to be executed when certain actions occur, for example, after a new INSERT statement in the book table. The action does not need to happen within phpMyAdmin.

Contrary to routines that are related to an entire database and are visible on the database's Structure page, triggers for each table are accessed from this specific table's Structure page.

Note

Prior to MySQL 5.1.6, we needed the SUPER privilege to create and delete triggers. In version 5.1.6, a TRIGGER table-level privilege was added to the privilege system. Hence, a user no longer needs the powerful SUPER privilege for these tasks.

In order to perform the following exercise, we will need a new INT column—total_page_count—in our author table.

The idea here is that every time a book is created, its page count will be added to the total page count of the books from this author. Some people may advocate that it would be better not to keep a separate column for...