Re: Database design
Date: Tue, 21 Feb 2006 13:56:42 -0800
Message-ID: <j13nv199ur2obj4ouslvvp5e71otqvdroo_at_4ax.com>
Alexandr Savinov <spam_at_conceptoriented.com> wrote:
>JOG schrieb:
>> Mark Johnson wrote:
>>> "x" <x_at_not-exists.org> wrote:
>>>> "Roy Hann" <specially_at_processed.almost.meat> wrote in message
>>>> news:3--dnYnbkrrCfmTenZ2dnUVZ8qadnZ2d_at_pipex.net...
>>>>> "x" <x_at_not-exists.org> wrote in message news:dtcjfn$f87$1_at_nntp.aioe.org...
>>>> Well, the slippery part is not that amusing after a while.
>>>>> I am more inclined to read it as just the usual witless gaff of noticing
>>>>> that the bounding box of a printed representation of a table has length
>>>>> width and leaping to the conclusion that a table is therefore
>>>>> two-dimensional; planar: flat.
>>> Then I certainly stand to be corrected. I thought the relation was
>>> thought to be essentially an unordered set or list of entities, and
>>> nothing more.
>> A tuple does not equate to an entity, in fact far from it.
As I understood it, the entity is each row in a relation, each entity consisting of various attributes, which alternately are termed, tuples. And each entity is supposed to be of 'like kind'. Unfortunately, based on previous messages, no one really seems to know what that is, or whether such 'like kinds' are even important. Received on Tue Feb 21 2006 - 22:56:42 CET