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Using a Trigger to Auto-Generate a Key Value
发表于：2007-06-08来源：作者：点击数：
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This example employs a trigger program to automatically generate a unique employee number every time a new record is added to an Employee Master File called EMPLOYEE. Example: Using a Trigger to Auto-Generate a Key Value This example emplo
This example employs a trigger program to automatically generate a unique employee number every time a new record is added to an Employee Master File called EMPLOYEE.Example: Using a Trigger to Auto-Generate a Key Value
This example employs a trigger program to automatically generate a unique employee number every time a new record is added to an Employee Master File called EMPLOYEE. The file contains fields you would expect to see in a simple employee file, such as employee number, name, address, job code, salary, etc. Figure 6.1 shows the complete layout for the file.
Figure 6.1: This Employee Master File is used to demonstrate trigger usage.
