Hi, Anton.
>In fact, I need a to create a data storage for system which must allow continious development which forces frequent changes to data schemes and even more - dynamic definition of some data schemes based on configuration data.
>So, I'm still in question to continue developing EAV engine for VFP or to choose another concept.
Maybe you can evolve you model gradually without lossing the advantages of a good normalized database schema.
Take a look at this great book:
http://www.amazon.com/exec/obidos/ASIN/0321293533/ambysoftincor if you can't get it, start with the ideas on:
http://www.agiledata.org/Best regards,
