参数或从vb6到sql代码的调用

I am about to make a system using VB6. My instructor told me that I should use a parameter or a call from SQL code because we need to focus on sql. My question is how to do this? I know about ADO ,RDO, etc ... but i'm having a hard time looking for something like this. Any advise or clue on how to do this? Your help will be highly appreciated. I am about to make a system using VB6. My instr