If I understand your situation correctly, it seems you need four CRUD functions that have the same functionality but differ in their specifics. If it were my project, that would immediately lead me to create four generic CRUD methods with the specifics passed as parameters.
Taken from the CGI::Application
The param() method enables a very valuable system for customizing your applications on a per-instance basis. One Application Module might be instantiated by different Instance Scripts. Each Instance Script might set different values for a set of parameters. This allows similar applications to share a common code-base, but behave differently. For example, imagine a mail form application with a single Application Module, but multiple Instance Scripts. Each Instance Script might specify a different recipient. Another example would be a web bulletin boards system. There could be multiple boards, each with a different topic and set of administrators.
The new() method provides a shortcut for specifying a number of run-time parameters at once. Internally, CGI::Application calls the param() method to set these properties. The param() method is a powerful tool for greatly increasing your application's re-usability.
Hope that helps!
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