Re: RM and definition of relations/tuples
- From: Jonathan Leffler <jleffler@xxxxxxxxxxxxx>
- Date: Sat, 26 Nov 2005 06:13:34 GMT
x wrote:
"vc" <boston103@xxxxxxxxxxx> wrote:The first definition is closer to the "mathematical" relation where a tuple is an *ordered* sequence. [...]
Is this set *ordered* ? {1,2,3,4,5,6}
Not if it is a set; its members are merely listed in order.
-- Jonathan Leffler #include <disclaimer.h> Email: jleffler@xxxxxxxxxxxxx, jleffler@xxxxxxxxxx Guardian of DBD::Informix v2005.02 -- http://dbi.perl.org/ .
- References:
- RM and definition of relations/tuples
- From: Martin Zapf
- Re: RM and definition of relations/tuples
- From: vc
- Re: RM and definition of relations/tuples
- From: x
- RM and definition of relations/tuples
- Prev by Date: Re: So what's null then if it's not nothing?
- Next by Date: Re: RM and definition of relations/tuples
- Previous by thread: Re: RM and definition of relations/tuples
- Next by thread: Re: RM and definition of relations/tuples
- Index(es):