Re: Value (was: Mixing OO and DB)

Jan Hidders <hidders@xxxxxxxxx> wrote in
news:42d7d4ee-0a07-4070-81a1-002b25f303ae@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:

On 28 feb, 17:47, "Yagotta B. Kidding" <y...@xxxxxxxxxx> wrote:
Jan Hidders <hidd...@xxxxxxxxx> wrote
innews:2d8e2a19-1dd3-49ed-89d3-5c2d9
320d26a@xxxxxxxxxxxxxxxxxxxxxxxxxxxx:

 But what is essential for value types in the context of database

theory is that the elements of the sets have representations
associated with them, i.e., ways in which they can be represented
in a computer or to a human being. That IMNSHO is the defining
characteristic of a value data type vs. other data types, and
thereby also defines what is and is not a value.

What are other abstract data types that are not values in the context
of database theory?

Those that don't include such representations, of course. :-)


'I know what they are, but I won't tell you'!

Nice answer. Much appreciated, thank very much.
.

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