Many useful libraries are included in the standard VBScript and JScript languages. There are libraries for regular expressions, string manipulation, math, and much more.

There are also libraries for connecting to databases. And while there is a FC8 Database Check rule, often you will want to customize its behavior. You can do that by connecting to the database with vbscript and adjusting the logic as you need. Here is an example of connecting to a Microsoft Access Database and populating the result to a suggestion box.

FC8:
Dim conn
Dim rs
Dim strSQLQuery
Dim arrayRows