UC-4.7

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UC-4.7 Activating Requests
Summary
Number	UC-4.7
Name	Activating Requests
Context	UC-4 Administration
Sub-Use Cases	None
Overview	Activating Requests issues periodic dissemination requests for Consumers based on previously registered dissemination triggers.
Actors	Activate Requests Access>Coordinate Access Activities
Description
Preconditions
Trigger	Event driven request received
Successful outcome
Steps	Activate Requests maintains records of event-driven requests (OAIS Page 4-12, s. 4.1.1.5) Activate Requests periodically compares event-driven request records the contents of the archive to determine if all needed data is available (OAIS Page 4-12, s. 4.1.1.5) Activate Requests generates an order and sends a dissemination request to Access>Coordinate Access Activities if needed data is available (OAIS Page 4-12, s. 4.1.1.5; Figure F-1: Composite of Functional Entities) Activate Requests generates an order and sends a dissemination request to Access>Coordinate Access Activities if a Consumer specified period has elapsed (OAIS Page 4-12, s. 4.1.1.5; Figure F-1: Composite of Functional Entities) Activate Requests generates an order and sends a dissemination request to Access>Coordinate Access Activities if a Consumer specified event has elapsed (OAIS Page 4-12, s. 4.1.1.5; Figure F-1: Composite of Functional Entities)
Exceptions
Documentation
Citations	OAIS Page 4-12, s. 4.1.1.5 "The Activate Requests function maintains a record of event-driven requests and periodically compares it to the contents of the archive to determine if all needed data is available. If needed data is available, this function generates a dissemination request that is sent to Access. This function can also generate orders on a periodic basis where the length of the period is defined by the Consumers or on the occurrence of an event (e.g., a database update)."
Diagrams
Notes
	This may tie in to the City's "Open data initiative" as it seems to provide a mechanism through which updated data sets can be disseminated when available.