primary key

Auto Generate Key

14 years ago By admin

This tutorial will teach you on how to create a key automatically as a primary key in your table. It is sometimes needed to create your own key to format it on your own needs. Say for example you’d like to format it to start as four (4) digits rather than starting from one (1).

The code herein is based on the code that I have already submitted on some of my program like hotel reservation system. But these time a simplified one. I created this tutorial because there are some visitors in this website who asked this before.

How to Catch Duplicate Entry - Primary Key

14 years ago By admin

This tutorial will guide you on how to determine if the primary key entered is already exist in the table. I created this tutorial in the hope to help newbie’s programmer solve this common problem. Instead of displaying the default message cast by Visual Basic a message “Employee ID already exist. Please enter another Employee ID.” will appear. For those who would like to see the source code

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