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Losing data: kinda long reads like a story

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  • Losing data: kinda long reads like a story

    I have v10,build 2783-3536. I have a form based on a set with two child tables, both with one to many links and one of the child tables with a granchild table with a one to many link. Actually, it is a "customer" table, linked to a "sales" table and a "repair_invoice" table by "customer_id" and a "repair_ item" table linked to the "repair_invoice" table by "invoice_no". I used this same set along with a similar form with my old version of 4.5 and it worked just fine. I have been using this form for several weeks now. The form shows the customer information, and a browse with the sales information, another browse with the repair info along with a browse showing the repair items for the repair invoice header. Today I was on the phone with a customer about a problem with his dishwasher. I looked up the customer. It showed the sales info about the dishwasher(model, serial, date of purchase and so on) and also the info on a repair I had done for him on his washing machine. His phone number had changed so I started to change his phone number. As soon as I started to type in the new phone number, his sales info changed from a dishwasher to an air conditioner and the repair item I used on his washing machine, a lid switch , changed to a convergence module. I asked the guy to give me the serial number off his dishwasher. I did a query for the serial number and it wasn't in my database. Luckily I still had my old 4.5 version on another computer and I looked up the information and re-entered it.I found that v10 had taken the data from the the next consecutive "customer_id" and inserted it in place of the sales data for the customer I had just looked up and had taken the data in the next consecutive repair item "invoice_no" and inserted it in place of the repair_item data of the customer I had looked up, and had completely did away with the original data. It didn't affect the data in the two tables from which the data came from. It was still there. It seems it just copied the data from the other tables and put it in the browses I had showing. The strange thing is, I have changed or edited data on this form before, but I never, or at least I have never noticed, this kinda of behavior before. I went back to a couple of customers I remember having changed information on before and everything was ok. Now this is just basic stuff. Tables, sets and forms. Things alpha should do well and has in past versions. I am kinda of gun shy right now. I guess I will not be editing any more information on this form. Especially the data from the parent table. I have referential integerity on, I have read in forums past this could cause a problem. Anyone have any suggestions? I also noticed there is a new patch available, I might try that.

  • #2
    Re: Losing data: kinda long reads like a story

    It didn't affect the data in the two tables from which the data came from. It was still there. It seems it just copied the data from the other tables and put it in the browses I had showing.
    That sounds like a linking problem, not any sort of lost data. If the data is still there but the link is corrupted you were seeing the wrong child/grandchild record linked to the current parent record. It doesn't sound to me like anything was copied or overwritten.

    Imagine if you manually changed the linking fields in existing child records to another valid parent linking value and again viewed your form. The wrong info would display attached the parent. If the linking index is not working you would see the same thing.

    Where the source of the problem lies I can't say.
    There can be only one.


    • #3
      Re: Losing data: kinda long reads like a story

      No the data was gone. It was overwritten with data from the next record.As I said in my previous post, I queried the sales table for the original serial number of the customers dishwasher. No record was found. There was no links involved in this search. The first thing I did when I saw this behaviour was to go to the control panel and update the indexes, because I thought just like you did.


      • #4
        Re: Losing data: kinda long reads like a story

        Well I'm home now so I decided to see if the same behaviour exhibited itself on my copy of the database in question. I have v10 2787-3538 here. Sure enough, when I started to edit any field in the customer information part of the form the sales record browse information changed to the information in the next customer id number.If I stopped and clicked on cancel changes the original browse information returned. Now keep this in mind that I have been using this database for a few weeks now and I have never noticed this happening. I looked at the set this form was based on. I noticed I had referential integerity on with cascade changes and deletes. I switched to prevent changes and the odd behaviour stopped. The only odd behaviour happening now, and this was also happening before, is when I edit a field in the customer information part of the form, if there is a repair record for this customer showing, it disappears until I save my changes and then it reappears. The sales information browse always shows.