?
Solved

Deleting master-detail records in ADOtable

Posted on 2001-06-13
1
Medium Priority
?
516 Views
Last Modified: 2010-04-06
Dear Sir,

I have two tables Access2000 in master-detail relationship. I access them using ADOtable. In a form, when I try to delete the master records, a message comes out saying there's detail records, then I delete detail records first and when I try to delete master records the same message stops me from deleting them. In Delphi demo folder there's in db one sample named dberrors.dpr, however it uses BDE to delete master-detail records. I don't want to use BDE. How do I do it using ADOtable, Ado connection?

Thanks,

Rhiegen
0
Comment
Question by:rhiegen
1 Comment
 
LVL 3

Accepted Solution

by:
Stefaan earned 400 total points
ID: 6189725
Hi,

If the database is an Access2000 database, you can set up cascaded deletes.  If you set those up it should give no problem anymore ( though personally I don't use that ).  Just open the DB, go to the Relationship diagram and find your master table.  Now klick on the links with the other tables and select 'Edit Relationship', and a new dialop will open in which you can enable 'Cascade Delete Related records'

This will set up your DB so that if you delete a master record, it will automatically delete the detail records.

If you do not want to set up Cascade deletes in your database, you will have to do it programmatically in your application.  Maybe in the BeforeDelete event of the Master table you can loop over all records from every detail table to delete them so that the actual delete of the master record will succeed.

I hope this will be of any help to you,


Best regards,


Stefaan
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work.  Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
This is an update to some code that someone else posted on Experts Exchange. It is an alternate approach, I think a little easier to use, & makes sure that things like the Task Bar will update.
There may be issues when you are trying to access Outlook or send & receive emails or due to Outlook crash which leads to corrupt or damaged PST file. To eliminate the corruption from your PST file, you need to repair the corrupt Outlook PST file. U…
Stellar Phoenix SQL Database Repair software easily fixes the suspect mode issue of SQL Server database. It is a simple process to bring the database from suspect mode to normal mode. Check out the video and fix the SQL database suspect mode problem.
Suggested Courses
Course of the Month3 days, 20 hours left to enroll

601 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question