| http://www.w3.org/ns/prov#value | - If we could keep the physical model to mean indexing, partitions, file structures, etc, and rename the machine independent model to something else (relational data model?) it would be clearer that there is a seperation of layers (tables and columns should work on any edition of a database server, even a distributed systems" version, but you may need to tweak the physical layer based on how large/
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