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Running Queries in the Background with a MySQL Client with AJAX


Are you interested in learning how to query different MySQL databases by using only a web browser as the execution environment? If your answer is yes, then look no further, because youíre in the right place. This is the second part of the series "Creating a MySQL client with AJAX." In three comprehensive tutorials, this series gives you some useful pointers on how to build quickly a MySQL client application that uses AJAX for sending queries in the background.

Author Info:
By: Alejandro Gervasio
Rating: 5 stars5 stars5 stars5 stars5 stars / 5
September 05, 2006
TABLE OF CONTENTS:
  1. · Running Queries in the Background with a MySQL Client with AJAX
  2. · Creating the application's main panel
  3. · Working with HTTP requester objects
  4. · Initializing the user panel and displaying result sets
  5. · Putting all the pieces together

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A downloadable file for this article is available here.

Introduction

If you read the first article, then youíll know what this series is about. Essentially, due to the wide versatility that AJAX brings to web developers, my basic plan consists of constructing a simple front end, comprised of a couple of web pages. Based on this structure, I will create an AJAX-driven application, capable of running queries against a specific database, obviously without having to reload any page.

While the development process itself seems rather straightforward and simple to perform, definitely there are certain details related to building this application that require special attention. In this case, Iím speaking not only of writing down both client and server-side application layers that will allow a proper interaction with MySQL, but also putting emphasis on minor things, like the look and feel of the program.

As youíll possibly recall, the applicationís visual appearance and the development of a simple login system were properly covered during the first tutorial. Therefore,  in this article you'll learn how to create a basic user interface, handy for entering SQL statements, in conjunction with the definition of all the JavaScript functions, aimed at sending HTTP requests in the background.

The proposal sounds really interesting and also educational, so letís jump together into the subject and see how this story continues. Letís get going!


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