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Updating database copy

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  • Updating database copy

    How can I update the copy of the database running on my office computer with design changes I make on my laptop without having to copy the entire database and without over-writing data?

  • #2
    Re: Updating database copy

    Hi,

    If you made design changes only and not changed the data, you would copy the .dd* files and the .se* files.

    If you need to replace data, you would copy the .dbf , .cdx and .fpt files.

    In your case I assume you made DESIGN changes only?
    Then you would restore the application files only.
    There is a nice section on the restore dialog in Alpha. You can mark the "application files only"
    - Open the restore database dialog
    - Select the backup file under the "Restore" tab
    - On the Files tab, click "Mark Files"
    - Select "Application files only" - there are comment on the dialog to read as well.

    Walter

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    • #3
      Re: Updating database copy

      Originally posted by dptroutt View Post
      How can I update the copy of the database running on my office computer with design changes I make on my laptop without having to copy the entire database and without over-writing data?
      Given a table name, these three files hold the data elements.

      Table
      .DBF
      Contains the table's data, one or more records, each containing one or more fields, and the definition of the table's structure. System toolbars are stored in a_toolbars_customized.DBF and system menus are stored in a_menus_system.DBF.
      Table Functions and Methods, Record Functions, Field Functions and Methods

      .CDX
      Contains the table index(es). This file is only present if you define index field(s). Alpha Five uses indexes to quickly find records.
      Index Functions and Methods

      .FPT
      Contains memo fields, which are text fields of arbitrary length. This file is only present if you define memo field(s).
      These hold the "operational" elements.

      Data Dictionary
      .DDD
      The table's data dictionary, which contains lists of additional table objects such as Layouts (forms, browses, etc.), report designs, saved operations, field rules, and field names longer than 10 characters.
      Dictionary Methods, Reading From and Writing To the Data Dictionary

      .DDM
      Stores additional table objects such as Layouts (forms, browses, etc.), report designs, and saved operations in memo format.

      .DDX
      Contains the dictionary's index(es). Alpha Five uses the .ddx to find a specific form name or field rule or whatever is needed.
      So if you want to preserve the data but change the look and feel, don't transfer the first three.
      There can be only one.

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      • #4
        Re: Updating database copy

        Thank you both.

        Comment


        • #5
          Re: Updating database copy

          That was a great explanation. But, I recently had to copy (Sample Dbase)
          Sample.adb
          Sample.alb
          Sample.alm
          Sample.alx
          so that "Operations and Code" would get carried over. I wonder what happens when you copy an older .adb file over a newer one? The .adb file gets updated every time you open a database. If I am going to make changes like the network optimize serial number, which of the above files do I copy? All four? In most cases, the last three are the same or older but the .adb file is always newer.

          Also, what are these files?
          Sample.dbg
          Sample.muf
          Sample.recent_files

          When I change a form, I send along the table files or set files the form is based on (not the data). But, I need to get the network updated so users know to refresh their shadow so I also need to change one of the .adb, .alb, .alm or .alx files; don't I?
          Jim Belanger

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          • #6
            Re: Updating database copy

            I don't know much about the other issues but

            Sample.dbg - this is a debug file and can be safely deleted if found
            Sample.muf - this is the multi-user file which keeps track of how many are logged into the database. It is recreated/changed each time someone opens or closes the database and should not be copied.
            Sample.recent_files - this is just a list of recently opened files and does not need to be copied
            There can be only one.

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