Re: Avoiding collection of entities

[Peter Brawley]

> is not a database a collection of entities?

Indeed. On the usual definition of the word 'entity'. And there's nothing in database theory that prohibits including in that def collections like inventories. An inventory table is an entity.

> he is talking about "Avoiding collection of entities".

A relational database is an organised collection of entities, and many an entity is itself a collection of entities, eg an OLAP fact table. Some entities are atomic, some are collections of atoms, some are collections of collections.