Overview of SQL Server Reporting Services 2012 Architecture, Features, and Tools - Learning SQL Server Reporting Services 2012 - page 151

• To schedule refreshes of report snapshot
• To schedule expiration of report cache or shared dataset to occur
at predefined times

You can create shared schedules for the use of many reports or subscriptions.
Schedule information is stored in the following databases:

• Native mode: Report Server database
• SharePoint Integrated mode: Service Application database

Schedules are triggered by SQL Agent Jobs and processing is based on local server
time. For details about how to create, modify, and delete schedules review the link
http://msdn.microsoft.com/en-us/library/ms155897.aspx .

There are differences between shared schedules and report-specific schedules.
Shared schedules are system-level items and you require system-level permissions
to create them. Usually, these are carried out by Report Server administrator.
Report-specific schedules are defined on a per report basis (that is in the context of
an individual report, subscription, or report execution). System Administrators and
Content Managers can create and manage any schedule, but if you are planning a
custom role, then for the custom role to create and manage scheduling, the schedule
related tasks must be correctly defined.

To do this Include this task Native mode

predefined roles

SharePoint
Integrated mode
groups

Create, modify,
or delete shared
schedule

Manage shared
schedules

System
Administrator

Owners

Select shared
schedules

View shared
schedules

System user Members

Create, modify, or
delete report-specific
schedules in a user-
defined subscription

Manage individual
subscriptions

Browse, Report
Builder, my reports,
Content manager

Visitors, members

Create, modify, or
delete report-specific
schedules for all
other scheduled
operations

Manage report
history, manage
all subscriptions,
manage reports

Content manager Owners