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Article View: borland.public.cppbuilder.database.ado
Article #2641

Re: TADOConnection.OpenSchema types

#2641
From: Edward Diener
Date: Wed, 30 Apr 2003 21:09
89 lines
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Thanks. It is what I surmised in the first place. I will report it on QC.

Viatcheslav V. Vassiliev wrote:
> Yes, it is an error in Borland help. ADO Express (dbGo) supports any
> schema that is supported by MS ADO for the same OLEDB provider.
>
> ----------------------------------------------------------------
> Regards,
> Viatcheslav V. Vassiliev
> http://www.oledbdirect.com
> The fastest way to access MS SQL Server, MS Jet (MS Access)
> and Interbase (through OLEDB) databases.
>
>
> "Edward Diener" <eddielee@tropicsoft.com> �������/�������� � ��������
> ���������: news:3eaeeb56$1@newsgroups.borland.com...
>> Viatcheslav V. Vassiliev wrote:
>>> Info literals and keywords are really not defined in OLEDB as schema
>>> - OLEDB provider provides this information not through schema
>>> mechanism and ADO transforms this to schema. If you need more info,
>>> look MDAC SDK or MSDN.
>>
>> Once again your comment does not explain why the Borland
>> documentation for TADOConnection::OpenSchema says it does not
>> support literal information because the underlying ADO does not
>> support it, while the MS ADO documentation for the
>> Connection::OpenSchema clearly states that does support literal
>> information.
>>
>> How much clearer can I make this discussion ? I don't mind your not
>> answering as it appears to be Borland's error and is not your
>> problem, but I wish that if you answer, you would at least look at
>> what I am saying. No doubt the Borland doc is just plain wrong, as
>> it so often is, but I just am asking for you to confirm this also or
>> present me with evidence which shows that I am wrong and that
>> clarifies the matter.
>>
>>>
>>> ----------------------------------------------------------------
>>> Regards,
>>> Viatcheslav V. Vassiliev
>>> http://www.oledbdirect.com
>>> The fastest way to access MS SQL Server, MS Jet (MS Access)
>>> and Interbase (through OLEDB) databases.
>>>
>>>
>>> "Edward Diener" <eddielee@tropicsoft.com> �������/�������� �
>>> �������� ���������: news:3ead97a6@newsgroups.borland.com...
>>>> Viatcheslav V. Vassiliev wrote:
>>>>> ADO Express (dbGo) uses MS ADO to get schema data, so it supports
>>>>> any schema that ADO supports. adSchemaDBInfoLiterals is defined in
>>>>> ADO
>>>>> but not in OLEDB - OLEDB providers provide this information not
>>>>> through schema.
>>>>
>>>> Why then does the Borland doc quoted below say that
>>>>
>>>> "siDBInfoLiterals (Defined in OLE DB, but not supported by ADO.)"
>>>>
>>>> along with a number of other siXXX schema types ( look at the
>>>> bottom of the TSchemaInfo type topic ) ? Is this just another
>>>> error by Borland in their documentation ?
>>>>
>>>>>
>>>>> ----------------------------------------------------------------
>>>>> Regards,
>>>>> Viatcheslav V. Vassiliev
>>>>> http://www.oledbdirect.com
>>>>> The fastest way to access MS SQL Server, MS Jet (MS Access)> and
>>>>> Interbase (through OLEDB) databases.
>>>>>
>>>>>
>>>>> "Edward Diener" <eddielee@tropicsoft.com> �������/�������� �
>>>>> �������� ���������: news:3eabd2f1$1@newsgroups.borland.com...
>>>>>> The documentation for OpenSchema's TSchemaInfo types says that
>>>>>> says:
>>>>>>
>>>>>> "siDBInfoLiterals (Defined in OLE DB, but not supported by ADO.)"
>>>>>>
>>>>>> among other types specified as defined in OLEDB but not ADO.
>>>>>> However, looking at the MS ADO documentation, it clearly states
>>>>>> that adSchemaDBInfoLiterals, the ADO equivalent of
>>>>>> siDBInfoLiterals, is supported in ADO. Does anybody know why
>>>>>> Borland's ADO implementation says that it is not supported ? Is
>>>>>> the Borland ADO implementation a version of ADO that is not the
>>>>>> latest and does not support this functionality ? I notice the
>>>>>> latest version of ADO on my machine is
>>>>>> 2.7, which I guess corresponds to the 2.7 version of MDAC. What
>>>>>> version of ADO does Borland's version support ?
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From: "Edward Diener" <eddielee@tropicsoft.com>
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Subject: Re: TADOConnection.OpenSchema types
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