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SQL (Structured Query Language)

Introduction to SQL (Structured Query Language)
IBM developed its relational database management system by creating a language initially named SEQUEL (Structured English Query Language). However IBM's legal department found a possible copyright issue with the name SEQUEL. So they decided to drop the vowels and call the language SQL. More ...

Language Integrated Queries (LINQ) and Visual Basic
LINQ is a better version of SQL - it is a part of ADO.NET and is integrated with VB.NET. LINQ now has the long missing option of using Visual Basic functionality in the data selection process. More ...

Introduction to Variables in PHP
Computer programs usually work with some form of data. This article is an introduction to variables in PHP. More ...

A Free Windows Graphical Interface to MySQL
In my previous article "Gettting Started With MySQL Database" we installed MySQL on Windows and worked with it using MySQL monitor in a DOS window. In this article, rather than work with a DOS window, we will use a free Windows Graphical Interface to MySQL. More ...

PHP and MySQL for Dynamic Web Sites: Visual QuickPro Guide
This book teaches how to develop dynamic Web sites with PHP and MySQL. The information is presented in a step-by-step approach. The focus is on real-world, practical examples. More ...

What is an Entity Relationship Diagram?
Entity Relationship diagram is simply a graphical concept which shows the flow of information input and output. Entity relationship diagram has three main components, entity, attribute, and relationship. More ...

Use Perfmon and SQL Profiler Together to Troubleshoot SQL Server Performance Issues
A great technique for troubleshooting SQL Server performance issues is to use Perfmon and SQL Profiler together. Each tool give you insight into what is happening with your database server, but combined they can narrow down your performance issue to specific events or statements. More ...

How to Connect to an Unresponsive SQL Server: Direct Admin Connection
When SQL Server stops responding but is still, the first impulse is to reboot SQL Server. This may stop the symptom, but will not tell you anything to help you prevent the cause. More ...

Creating Webpages with PHP
This article is an introduction to the PHP server-side scripting language where you learn how to create webpages with PHP. More ...

Program a Visual Basic MySQL Database
In my previous article we used MySQLGUI for executing SQL queries on our example database. In this article I show you how to program a simple MySQL database browser using Visual Basic. I assume that you already know how to program a simple Visual Basic .EXE project. More ...