Date: Tue, 15 Jan 2008 20:44:38 +0100
Kira Yamato schreef:
> ...A domain is simply a set of values.
>> 1. Set of values.
>> Sometimes used synonymously with type.
>> 2. Domain of a function. See function, math context.
>>>>>> [Function] >>>>>> For now we have to live with different meanings >>>>>> of _function_ when talking about databases: >>>>>> "The function of this function is to get the tuples from B >>>>>> that are functionally dependant on A." >>> >>> No, there is always just one meaning of function in database. >>
>> Would s/meanings/uses/ take away your objection?
>> If not, which one meaning?
> Perhaps s/meanings/definition/ is better.
The next question is: where are those definitions? I'll use 'uses' for now.
>>>>>> A binary mathematical relation over two sets D and C that >>>>>> associates with each element in D exactly one element in C. >>>>>> Set D is called the domain of the function, C its codomain. >>> >>> Essentially correct, although to be rigorous you need to define how >>> such binary relation can define the meaning of "associating each >>> element in D exactly one element in C." >>> >>> Not all binary relation has this property. >>
>> IMHO this goes way beyond the glossaries purpose.
>> However, if you have a simple replacement that would cover this it
>> would be welcome.
> It is over the top for practical uses. I was just being pedantic. :)
I'll post the glossary in a new thread next.
-- What you see depends on where you stand.Received on Tue Jan 15 2008 - 20:44:38 CET