A SQL Remote subscription starts when publication updates are being sent from the consolidated database to the remote database.
The START SUBSCRIPTION statement is one of a set of statements that manage subscriptions. The CREATE SUBSCRIPTION statement
defines the data that the subscriber is to receive. The SYNCHRONIZE SUBSCRIPTION statement ensures that the consolidated and
remote databases are consistent with each other. The START SUBSCRIPTION statement is required to start messages being sent
to the subscriber.
Data at each end of the subscription must be consistent before a subscription is started. It is recommended that you use the
database extraction utility to manage the creation, synchronization, and starting of subscriptions. If you use the database
extraction utility, you do not need to execute an explicit START SUBSCRIPTION statement. Also, the Message Agent starts subscriptions
once they are synchronized.