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Multiple Databases with One App and Shadowing

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    Multiple Databases with One App and Shadowing

    I'm looking at using multiple databases within one app. To that end I've been talking with Tom Henkel. He has tied together many .adbs that call each other.

    But Tom is using A5 V1, which doesn't use shadowing. I tried setting up a test scenario where I call an .adb from within another .adb.

    Example: From within test.adb, I tell it to launch U:\a5data\test2.adb and it works fine. I shadow both .adb's

    But when I shadow it, it still launches the .adb from the network not a shadowed version.

    Is there a way to make this happen?

    #2
    RE: Multiple Databases with One App and Shadowing

    is U:\a5data\test2.adb the master copy of the app?

    surely you need to be calling the shadowed version of the app which will likely be on the local c: drive.

    Comment


      #3
      RE: Multiple Databases with One App and Shadowing

      I thought about that, but didn't know if that was the best way. I'll assume it is!!

      Comment


        #4
        RE: Multiple Databases with One App and Shadowing

        Along that vein,

        If we have 10 to 20 possible adb files accessible by a given PC, does that mean that we need to have ALL of them shadowed on the PC??? What kind of space will this require? DO I then call them from the "shadowed" folder on the "C" Drive?

        Tom

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          #5
          RE: Multiple Databases with One App and Shadowing

          Hi Tom,

          What you describe is what I do except that my typical user has 2-3 applications rather than your 10-20.

          It does take some local space to hold the application files but since there is no data it is not excessive and doesn't increase over time.

          Bill
          Bill Hanigsberg

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            #6
            RE: Multiple Databases with One App and Shadowing

            I didn't know this until I investigated, and Tom Henkel didn't know it it till I told him, so others may not know:

            Even though the entire structure of your dbf's appears to be shadowed on your local drive, they are not. Example: You have a file called Invoices.dbf full of 40 fields and 10,000 records.

            You look in your shadow dbf and there is a dbf called invoices.dbf. But when you open it, it is one field (called shadow I think) and one record. And the field value is just the location of the real dbf.

            Comment


              #7
              RE: Multiple Databases with One App and Shadowing

              Tom,

              I did some checking, and it isnt the DBF that contains anything, but the SUPPORT files (ddx, ddm, etc. ) This is what makes it fast in that the forms, reports, etc are loaded from the local drive, not the network drive.

              Comment


                #8
                RE: Multiple Databases with One App and Shadowing

                We resume our To to Tom thread. Should we get Mr. Cone involved?

                I assume even on large databases those files would be fairly small.

                Comment


                  #9
                  RE: Multiple Databases with One App and Shadowing

                  I think that it is only right to restrict this thread to Toms only. So, now we eed to hear from TOm COne and TOm Holt.

                  (Obviously its geting to me....)

                  Tom

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