netwk mdls - created to represent complex data relationships effectively; improve db perf and impose db standard; allow a record to have more than one parent
netwk mdls - created to represent complex data relationships effectively; improve db perf and impose db standard; allow a record to have more than one parent
1) represent complex data relationships efficiently, 2)improve database preformance and impose database standard, 3)allow a record to have more than one parent, 4) one-to-many relationships and m:n