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Article #88

Re: Database problem

#88
From: Vassiliev V. V.
Date: Sat, 28 Jul 2007 09:29
46 lines
3269 bytes
Access (Jet engine) does support BLOBs. Just in MS Access UI you will see it 
not as OLE object but as binary data (i.e. can not normally view in MS 
Access UI). Inside your application it will be normal BLOB as in most other 
DBMS.

//------------------------------------------
Regards,
Vassiliev V. V.
http://www.managed-vcl.com - using .Net objects in Delphi for Win32 +
ADO.Net
http://www.oledbdirect.com - The fastest way to access MS SQL Server,
MS Jet (Access) and Interbase (through OLEDB)


"Tomislav Hundric" <rifnet@gmail.com> �������/�������� � �������� ���������: 
news:46aaee61@newsgroups.borland.com...
> Hi,
> I have the following situation. I have to develop application that will be 
> used to display images and data from db. My first thought was I'll use ms 
> access db because it is very simple to deploy, only one file and the best 
> part is I don't have to install bde engine since it uses microsoft jet 
> driver which is native in windows, but since ms access doesn't have blob 
> field I have to use OLE object and I found out that it converts jpeg 
> images to bmp and increases size of db dramatically. I know I can use save 
> the path to file in db field and then retrieve the image stored locally, 
> but this is not a good solution to me since I'll be storing hundreds of 
> images so I want to avoid hundreds of files stored locally. My next 
> thought was to use paradox db since it is able to store images in blob 
> field, but I want to avoid installation of bde if possible. I've came 
> across this article which says:
>
> Jet 4.0 supports connections to Paradox 3, 4 and 5 only; we do not support 
> later versions. The ADO connection string syntax would be:
>
> cnn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _ "Data
> Source=c:\somepath;" & _ "Extended Properties=Paradox 5.x;"
>
> I've tried the connection string above and I get error:
> Could not find installable ISAM
>
> Does anyone know is it possible to connect to paradox db using jet drivers 
> (ADO Connection), or can anyone suggest me which is the best way to solve 
> my problem.
>
> Thanks in advance,
> Tomislav 
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Subject: Re: Database problem
Date: Sat, 28 Jul 2007 13:29:40 +0400
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