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Keeping Sql Tables linked

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  • Keeping Sql Tables linked

    I have done a few Desktop apps and now have decided to try my hand with an SQL backend. I have designed the sql tables in MS SQL 2008. I have just a few test tables setup. I have set a Pkey on the first and a Forein Key on the 2nd and 3rd. I want to actively update insert using a form. My problem is that when create a record on the 1st table i want it to create a record on table 2 and 3. Because my PKEY is autoincrement so every new record created i want to key the records in line on the other 2 tables. So i can open the next form based on table 2 using the current record only option. I'm not sure if i fire the PKEY from the 1st table to insert a new record with a variable on table 2 prior to firing the current record only. But before it inserts PKEY on table 2 i want it to check if a record already exsists prior creating the new record, if record found load current record instead of starting a new one. Then after table 2 is done i want to make table 3 a one to many link table 1 is one to one and 2-3 is one to many. First table holds company name and a phone # and table 2 holds the person to contact and his/her info. and table 3 is the accounts that are handled by that contact. In a Desktop app this is fairly easy but I'm a SQL Neub. Any input would be greatly Honored.

  • #2
    Re: Keeping Sql Tables linked

    Hi Steve

    Just checking, you have established all your links/constraints etc in the SQL dbase? Re the way you are wanting to update multiple tables, would you consider building a set inside Alpha based on the 3 SQL active link tables? When you create the set, you can choose how you want the relationships to show ie one to one etc etc. Then build your data entry form based on the set

    Hope this helps




    • #3
      Re: Keeping Sql Tables linked

      My only problem with using a set and a form based on a set in alpha is the form will be opening all the tables in the set and causing major slow down. If I was building a desktop app i would build a set. as far as sql i think i have everything set right not sure. i'm learning sql at the same time. Is there any other way to keep tables seperate and still balance the records on the other tables. I'm going to try the set and form on the set see what i come up with.

      Thanks for the Feedback


      • #4
        Re: Keeping Sql Tables linked


        If you use the query builder, pull in the 3 tables you need and then choose the fields from all three tables that you want to update. Provided that all 3 tables have an ID PK field which automatically increments for each new record (this can be set inside SQL Server), and your insert and update specifications for each table are correct (these are viewed by right clicking on your DB schema tables in SQL Server), you should be able to update the first table with the primary info and then populate the other 2 tables with the additional info.

        Hope this helps

        PS BTW is your version of SQL server the free version? If you plan on putting your DB up on a server, I'm fairly certain the database has to be sitting in a full version of SQL server rather than a developer type edition for others to access via say a desktop or web based interface


        • #5
          Re: Keeping Sql Tables linked

          I'm using MS Sql i got from school. I'm using the ms managment studio to build my tables i have an id int auto increment 1 1. on my 2nd table i have the id as a forien key not auto increment. I've been looking for an example posted on this board found one but the sql server address is no good anymore. Maybe i can pull it apart and learn somthing even though it doesn't connect.