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Posted: **Wed 31 Jan 2018 19:57**

I have in my database a master table with 19 detail tables that I linked in the datamodule.
I'm using TUniquery with mastersource property.
When I do ApplyUpdates on the master table, the error appears:

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Debugger Exception Notification
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Project Sophos_r3.exe raised exception class EAccessViolation with message 'Access violation at address 00000014. Read of address 00000014'.
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Break Continue Help
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Does the component have any details limit?
If I only link 16 detail tables, it does not give an error.

Posted: **Thu 01 Feb 2018 14:42**

In UniDAC, there are no separate restrictions on the number of relations in the master/detail datasets.

Please compose a small test sample where the issue is reproduced and send it using the contact form at our website https://www.devart.com/company/contactform.html . Include scripts to create test tables into the sample.

Posted: **Thu 08 Feb 2018 11:50**

Thanks @azyk, it was my mistake. I solved the problem..

Devart Forums

Number of detail tables in a master/detail

Number of detail tables in a master/detail

Re: Number of detail tables in a master/detail

Re: Number of detail tables in a master/detail