Re: Object-relational impedence
Date: Sun, 16 Mar 2008 23:55:44 -0300
Message-ID: <47ddddb2$0$4063$9a566e8b_at_news.aliant.net>
topmind wrote:
> Robert Martin wrote: >
>>On 2008-03-14 00:17:40 -0500, frebe <frebe73_at_gmail.com> said:
>>
>>>On 13 Mar, 18:40, Robert Martin <uncle..._at_objectmentor.com> wrote:
>>>
>>>>The real point of that remark was that the user of a tool is at a
>>>>higher level of abstraction than the tool itself. �SQL is a tool. �ORMs
>>>>are tools that use SQL to get their job done, just like compilers use
>>>>assembly to get their job done. �In that sense ORMs live at a higher
>>>>level of abstraction than SQL.
>>>
>>>Lets have an example: There are many "compiler" products translating
>>>from a high-level language like ADA to a low-level language like C,
>>>instead of translating to machine code directly. What if someone wrote
>>>a "compiler" translating C source code to ADA source code, would that
>>>make C more high level than ADA? Hardly? The existance of a product
>>>translating from language A to language B doesn't say anything about
>>>the levels of A and B.
>>
>>That's a good point. The fact that you can write a translator from
>>A->B does not mean A is higher level than B. On the other hand, when A
>>*truly is* higher level than B, there is a lot of leverage to be gained
>>by using A instead of B. That kind of leverage is cost effective and
>>attracts users. More and more people start using A as opposed to B. B
>>falls into less and less use. In the end, while everyone else is off
>>gaining the leverage of A, B is defended by a group of die-hards who
>>demand that all this A nonsense is foolish, and stupid, and who bemoan
>>the fact that nobody truly understands the purity of essense of B.
Martin is a fucking retard. Well, I take that back. I don't want to offend anyone with Down's Syndrome.
>>>If a RDBMS product is implemented using an OOPL, does that make
>>>relational algebra more high level than OO?
>>
>>Yes. I think this is obvious on the face of it. RDBs are a much
>>higher level concept than Java, or C++, or OO in general. OO is *code*.
>>
>>On the other hand, ORMs are higher level than RDBs (not better .. level
>>is not a value judgement) because ORMs make use of RDBs in order to
>>achieve a specific intent.
>
> Can you prove/demonstrate this rather than claim it?
His assertion is absurd on its face. Why do you continue to elevate his bullshit? It's not worthy of response. Received on Mon Mar 17 2008 - 03:55:44 CET