For the sake of ease and avoid building access knowledge from scratch, decided to build my data in related tables in excel. Just to make sure you know what I mean; client master data table(s) each has a customer number to relate these tables, this applies to product tables, orders tables use both customer numbers and product numbers to relate these records to the data in customer and product tables. A relational database using several worksheet. Of coarse I can provide a sample, but this is a design stage and I need a general answer. Can this be done in excel or I have to go the "access" route.