How to make a request to divide a relationship?

Question

SQL

I can not understand in any way how to make a request for dividing relations in Access'e (you can just use SQL code)?
Something like this
Here is my database:
list of parts
--codeDet
--name
list of products
--codeId
--name
table of entry of parts into products
--codeIn
--codeId
--codeDet
--quantity
index codeId+codeDet unique
part labor input table
--codeTr
--codeDet
--codeOperation
--codeEquipment
--normTime
--rates
index codeDet+codeOperation unique
directory Operations
--codeOperations
--name (turning/drilling/milling)
equipment reference
--codeEquipment
--names