This node starts a database transaction using the input database connection. A transaction allows you to group several database data manipulation operations into a single unit of work. This unit either completes entirely or not at all.
As long as the transaction is in process the incoming database connection cannot be used outside of the transaction.
Depending on the isolation level other connections might not see any changes in the database while the transaction is in process. The transaction uses the default isolation level of the connected database.
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