Main Page > Requirements > OAIS Use Cases > UC-4 Administration > UC-4.7 Activating Requests
UC-4.7 Activating Requests
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| Summary
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| Number
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UC-4.7
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| Name
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Activating Requests
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| Context
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UC-4 Administration
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| Sub-Use Cases
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None
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| Overview
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Activating Requests issues periodic dissemination requests for Consumers based on previously registered dissemination triggers.
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| Actors
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- Activate Requests
- Access>Coordinate Access Activities
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| Description
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| Preconditions
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| Trigger
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- Event driven request received
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| Successful outcome
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| Steps
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- 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)
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| Exceptions
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| Documentation
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| Citations
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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)."
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| Diagrams
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| Notes
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- 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.
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