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accessing Global variables

Discussion in 'Information Technology' started by Domac, Jul 28, 2006.

  1. Domac

    Domac
    Expand Collapse
    Guest

    Hi,

    I would like to access global variable declared in my backend database, is
    it possible??

    I have just solved transaction between accounting application based on Sql
    server 2000 database and manufacturing managment solution (wich i have
    developed).

    Problem is that every user is running transaction code , so in that critical
    moment , it is possible to make duplicates.

    My solution is to set variable value (in back-end database that everyone
    access) to value 1 wich means that transaction is in progress.
    I want to aviod creating table in back-end database ( because simple boolean
    would do the job) just for one variable.

    Thanks a lot!
    Domagoj
     
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  3. Pieter Wijnen

    Pieter Wijnen
    Expand Collapse
    Guest

    You should solve this by using transactions & locking mechanisms in stead
    Youy can use the dbDenyWrite option constant for a DAO Recordset ,
    DAO.QueryDef.Execute Or DAO.Database.Execute
    methods to deny other users to do updates simulatously, but the *correct*
    way should always be to use transactions

    ie

    Dim Rs As DAO.Recordset

    Set Rs = Db.OpenRecordset("MyTable",DAO.DbOpenDynaset,DAO.dbSeeChanges +
    DAO.dbDenyWrite)
    Will prevent others to update MyTable as long as the recordset is open


    HTH

    Pieter


    "Domac" <dd@dd.cc> wrote in message
    news:eKWEBeJrGHA.4932@TK2MSFTNGP05.phx.gbl...
    > Hi,
    >
    > I would like to access global variable declared in my backend database, is
    > it possible??
    >
    > I have just solved transaction between accounting application based on
    > Sql server 2000 database and manufacturing managment solution (wich i have
    > developed).
    >
    > Problem is that every user is running transaction code , so in that
    > critical moment , it is possible to make duplicates.
    >
    > My solution is to set variable value (in back-end database that everyone
    > access) to value 1 wich means that transaction is in progress.
    > I want to aviod creating table in back-end database ( because simple
    > boolean would do the job) just for one variable.
    >
    > Thanks a lot!
    > Domagoj
    >
    >
    >
    >
    >
    >
    >




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