I think I might understand you... You have a BOX, which could be a variable amount of sizes, and each size can hold a variable amount of items.
You want to create a rule(s) that will ensure you do not have too many things in each box. If that is that case: 1. You could use Triggers in PostgreSQL to ensure that you are within the correct dimensions on insert and update. 2. You might be able use events in sqlalchemy to inspect the collection and figure out if the number of items is allowablw -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
