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Home -> Community -> Usenet -> comp.databases.theory -> Re: The word "symbol"
"mAsterdam" <mAsterdam_at_vrijdag.org> wrote in message
news:4301180b$0$11063$e4fe514c_at_news.xs4all.nl...
> VC wrote:
>> mAsterdam wrote: >>>VC wrote: >>>>mAsterdam wrote: >>>>>vc wrote:
>>>>>>When we confine ourselves to the realm of formal structures of which >>>>>>database theory is an example, ... >>>>> >>>>>Ah! This creates perspective. I do not share this opinion. >>>>>To me there is a part of database theory that deals with formal >>>>>structures. >>>> >>>>What's that supposed to mean ? >>> >>>Your interest in databases is in the purely formal aspects, no? >>>That is one, but not my main area of nice topics in database theory. >>>Is that so difficult? >> >> So you claim that, say, the relational model is only partially formal. >
> >> What are the other "nice topics" in the RM which are not formal ? >
OK.
>
I believe it is. The database has no clue as to, say, whether the person named "Joe" actually lives in London. The database can ensure consistency amongst stored facts but there is no way it can verify facts like the one above. Therefore, one cannot guarantee a total absense of dirty data by purely database means. Of course, trivial checks like "age between 1 and 100" or whatever can easily be enforced, but again the database is of no help if the human enters "27" instead of "72".
If you believe otherwise, show how one would solve this problem.
> No. Just - at least partly - outside the realm of
> the formal aspects.
> >>>>>[snip] >> >>>>>Semiotics is not applied to the study of formal systems >>>>>per se but it does give handles to provide content, >>>>>context, meaning and use of formal systems. >>>> >>>>For example ? >>> >>>Why? Any example would by definiton be >>>outside what you choose to be database theory. >> >> Forget about my definitions (although they are not really mine but rather >> commonly accepted). >
Firstly, let's forget both about my definitions as well as about trying to find out whether those definitions are commonly accepted or not. I withdraw my statement about the definitions being commonly accepted because trying to discuss this point is not very interesting (to me). Secondly, your assertion "Your interest in databases is in the purely formal aspects" is odd since you cannot possibly know what my "interest in databases" might be (you cannot read my mind). Therefore, I'll ignore the assertion as irrelevant.
> >> I am curious how semiotics "gives handles to provide content" for the RM >> ? Always eager to learn from my betters, please oblige. >
The phrase is intentionally ambiguous. It can be interpreted in two ways:
What interpretation is more a propos is actually up to you. Recall, instead of answering my first question about a connection between semiotics and database theory ["for example ?"], you've started theorising on my hypothetical interests in the database theory, i.e. you did not wish or could not answer my question.
Now, can you kindly provide such an answer/example ? Received on Mon Aug 15 2005 - 19:07:12 CDT
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