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Bonus TIPS for Successful Posting

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Using OLE Providers for Active Link Tables

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  • Using OLE Providers for Active Link Tables

    Is there any way to use the Microsoft Jet OLEDB driver to connect to Dbase IV tables as Active Link tables in Alpha 5? I can connect via ODBC but the connection is quite slow compared to OLE drivers. I've tested both using Visual Studio and VB.Net and find that the OLE drivers are also much more stable when working with indexed Dbase IV files through the Borland Database Engine. I'm working on an application in Alpha that needs real-time read only access to files from a Dbase IV commercial application.

    Thanks!

    P.S - the connection string I need to use is:
    {Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\folder;Extended Properties=dBASE IV;User ID=Admin;Password=} where folder is the folder that contains the dBASE IV files.
    Brad Weaver, President
    ComputerAid International
    Ottawa ON Canada
    Versailles KY USA
    www.compuaid.com

  • #2
    Re: Using OLE Providers for Active Link Tables

    I can't believe nobody from Alpha addressed this!
    (And I bet that 99% of the forum users have no clue as to what you are referring to!)

    OLE DNSless connections are (from what I read) far superior in terms of both performance and multi-concurrency.....

    This may be part of the "slowness" problem present with Access (.mdb) connections too!
    (OLE JET is far superior for them too!)
    Robert T. ~ "I enjoy manipulating data... just not my data."
    It's all about the "framework." (I suppose an "a5-induced" hard drive crash is now in order?)
    RELOADED: My current posting activity here merely represents a "Momentary Lapse Of Reason."

    Comment


    • #3
      Re: Using OLE Providers for Active Link Tables

      Am I missing something here?
      I just add Dbase tables to any A5 database and treat them as I would any Alpha DBF.
      Memo ( DBT s ) are not available

      Comment


      • #4
        Re: Using OLE Providers for Active Link Tables

        Originally posted by Ray in Capetown View Post
        Am I missing something here?
        I just add Dbase tables to any A5 database and treat them as I would any Alpha DBF.
        Memo ( DBT s ) are not available
        Hi Ray;

        No as far as a basic connection (is concerned)..... But when connection to .mdb tables, an OLE JET connections is superior (at least always used to be) in terms of performance & multi-user considerations. Why Alpha doesn't support this connection for both desktop & web is beyond me.....

        In the past with other tools, I used to create connection strings using a DSNless connection! (have to check the exact syntax). One immediate benefit was doing so also remove the necessity to specify a DSN connection on the web server... (no need to declare the connection on a web server, just upload the .mdb file and go) I chose OLE JET not only because it was faster, but also because it eliminated "integrity" issues when used in ASP pages.....

        Here's some good info re: connection strings to all types of data sources, including Access file using the JET OLE DB Provider: http://www.codeproject.com/Articles/...on-Strings#OLE DB Jet
        Robert T. ~ "I enjoy manipulating data... just not my data."
        It's all about the "framework." (I suppose an "a5-induced" hard drive crash is now in order?)
        RELOADED: My current posting activity here merely represents a "Momentary Lapse Of Reason."

        Comment

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