Protect an auto trail trigger in a database

Let's say i have created a database and i want to distribute a copy of that database to a third party company, in order to fill in some data but not to delete any existing records. If the database contains a trigger, is it possible to protect that trigger
from modifying or deleting it by the third party company? Is it possible to protect the database from deleting any existing records? I guess, if i can protect a trigger, then it is possible.
What is the appropriate way to give a database copy to the third party company? Can i just give them a copy of the mdf and ldf files?

Hi ileve,
According to your description, you want to copy the database to a third party company and prevent the trigger and the data records from being modified or deleted in the third party company side.
If you just want to copy the database once, besides your method of attaching the mdf and ldf files to the server of third party company, you could also back up the database from your server side and restore the database on the server of third party company.
However, if you want to copy the database continuously, you could use transactional replication by setting the property of 'Copy user Triggers' to be 'True' on the articles page of the
publication properties. Besides, you do not have to worry about the modification of database(including the triggers) in the third party company's side since the database will
be replaced with the new database from your side intermittently if you
schedule the snapshot agent to run at a small internal when creating the publication and also
schedule distribution agent to run continuously when create the subscription. For how to set up transactional replication, please refer to the article:
http://sqlserverscribbles.com/2013/06/26/how-to-create-transactional-replication-in-sql-server/
In addition, besides Satish's post, you could also prevent triggers and data records from being modified or deleted by granting specific login accounts only 'public' database role, or just add the database role db_datareader besides 'public' as the following
steps.
1. On the server of third party company's side, open SQL Server Management Studio. In Object Explorer, expend 'Security' folder, and then expend 'Login' folder. Right-click the login, and click 'Properties'.
2. In the 'User Mapping' tab, check the checkbox for the database in the frame 'users mapped to this login' and meanwhile in the frame 'database role membership', make sure that only the checkbox for the database roles(public or public and db_datareader)
are checked.
Regards,
Michelle Li

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[email protected] wrote:
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