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Microsoft® SQL Server 2012 Unleashed by Alex T. Silverstein, Chris Gallelli, Paul T. Bertucci, Ray Rankins

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Subscriptions

A subscription is essentially a formal request and registration of that request for data that is being published. By definition, you subscribe to all articles of a publication.

When a subscription is being set up, you have the option of either having the data “pushed” to the subscriber server or “pulling” the data to the subscription server when it is needed. This is referred to as either a push subscription or pull subscription.

As shown in Figure 40.18, a pull subscription is set up and managed by the subscription server. The biggest advantage here is that pull subscriptions allow the system administrators of the subscription servers to choose what publications they will receive and when they receive them. With pull subscriptions, ...

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