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Index not updating browse!

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    #1

    Index not updating browse!

    I have a database setup on a main computer on a network. I have other A5 programs that copy the .dbf file from that main computer and use it to present information to the user. Once the .dbf file is copied over, the application reindexes the browse to show the information in the proper order; which it does. However, the main database contains all the current information, but the application isn't showing all the information that should be visible. It is only showing some of the information. Is there some updating command I must be using to tell the other A5 applications to show all the information in the copied .dbf file? Am I forgetting to copy over an additional file which may affect the way the information is presented?



    NATHAN
    Tags: None
    #2
    RE: Index not updating browse!

    Nathan,

    I can't answer the questions specifically but perhaps this will provide some direction. If you've been doing this for awhile and it's been working (which it sounds like), then look for something that's changed; code, field rules, indexes, etc. Have you tried rebuilding the indexes?

    If you've done all this and still no go, please provide more information about how things are set up so others can get a feel for what you're doing.

    kenn
    TYVM :) kenn

    Knowing what you can achieve will not become reality until you imagine and explore.

    Comment

      #3
      RE: Index not updating browse!

      Ken's on the right track. If you are only copying the .dbf then your index is out of date. (The index file for the table in question doesn't know the new records are there)

      You need to copy this as well, the .cdx file. To verify that this is the problem, before copying the .cdx file, change the index to record number order and look at the browse.
      There can be only one.

      Comment

        #4
        RE: Index not updating browse!

        When I go to the browse in record number order, what will indicate that I need to copy the .cdx file? Not seeing the information?



        NATHAN

        Comment

          #5
          RE: Index not updating browse!

          If you look at the table in record number order your view of the table is not being affected by the existing CDX (index) file for that table. You should see all the records you are expecting, though not in sorted order.

          If you then select an index with which to view the records, and also see that some records have 'disappeared' it's likely due to the index file being out of date. In this instance reindexing the table should solve the problem.

          Background:

          1) when you define and build an index for a table alpha five will keep it current for you automatically. The index lists are stored in the CDX file for the table.

          2) if you then copy that DBF table somewhere else, but do not copy the companion CDX file the index lists are left behind.

          3) if the destination for the table copy is in a folder that has a former CDX file from an earlier iteration of the table, Alpha Five will happily use it without realizing that it's out of date.

          Does this help?

          -- tom

          Comment

            #6
            RE: Index not updating browse!

            Tom:
            I have copied over the .cdx files as well. Unfortunately, this copying process is causing the previous indexes not to show at all; the index tables are empty after the copy is done.
            Is that normal? Or Am I doing something wrong on the copy?



            NATHAN

            Comment

              #7
              RE: Index not updating browse!

              Mr. White, I think you've got a propblem!

              It sounds like you're trying a hodge podge of things to get it to work. When you say you have other A5 programs, I'm taking that to mean that you wrote code to copy the .dbf files to the other network computers. Is this the first time you ran the code or has it been working and now is not responding?

              It would help to know how you set this up. Please be specific. General comments and questions get general answers. Consider going back to the basics. Are you sure you have your app set up properly to run on a network and nothing has occured to change the settings or the code? This may sound like a corny suggestion, but I think it was Vince Lombardi who told his veteran players, "Gentlemen, this is a football"!

              kenn
              TYVM :) kenn

              Knowing what you can achieve will not become reality until you imagine and explore.

              Comment

                #8
                RE: Index not updating browse!

                Nathan, the whole idea of copying tables and their indexes makes me uncomfortable, and should be approached with care.

                In many networked situations you would never do this. Instead, each workstation would log on to the same tables over the network. shared access to a common set of tables is often the entire point of putting a database on a local area network.

                Assuming you want to work with a local copy of a remote table, you must copy the DBF, FPT, and CDX files from the remote table. The DBF is your data table. the FPT is for memo field text. If you have no memo fields in your table structure you won't have an FPT file so don't worry about it. The CDX is the collection of indexes defined for the table at the remote location.

                When all are copied to a new local folder you should be able to open that copy of the table with Alpha Five on the local work station and the indexes defined on the remote station will be available to you, since they now reside in the same folder as your DBF. Be careful when copying not to split these files among several different folders. They should all reside in the same folder.

                This approach will overwrite the contents of any local files with the same names... which, after all, is what copying a file on top of another file always does, isn't it?

                If instead of this you are adding or appending tables to existing tables a completely different set of procedures would be used. This would never be referred to as a file copy.

                -- tom

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