Related question: Multivalued Fields a Good Idea?
I know that multi-valued fields are similar to many-to-many relationship. What is the best way to replace multi-valued
There is no replacement for MVFs in an Access database. Some query techniques can mimic MVFs but you may find MVF functionality to be superior. 1. It is fast and very easy to implement. No code and no SQL. 2. It is visual and therefore it is intuitive for the user. There are some things that you cannot do with an MVF so you really need to decide what is more important.