There is always a first requirement that comes along for choosing an architectural feature. It is purely a matter of chance what the requirement was. As it happens for this case, where the index is clustered (true for some of the join tables which will grow to billions of records over time) contiguity of values has a direct effect on how well the index performs because of the way clustering works. I already stated in the OP why this prompted an ORM.

One world, one people

In reply to Re^2: Architecture design for full stack development. by anonymized user 468275
in thread Architecture design for full stack development. by anonymized user 468275

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