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No changes are made to the on-premises database. The Data Uploader needs Read-only access to the source database on the SQL server to query the database and upload the information to CAM.
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Can multiple users log into the DataUploader server to view jobs?
Yes, multiple users can login to the server as whomever you want. However, data uploader must be run as the account you setup it with (no exceptions) otherwise jobs and connections may not display.
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Connection Strings
What is a Connection String?
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