EPA WINDOW CLERK (EWC)
COMPONENT SOFTWARE ENGINEERING

CONTENTS:
Background <> Tasks Performed <> Assumptions <> Data Structures <> Inputs <> Outputs <> Special Algorithms <> Pragmatics

Purpose

The EWC provides e-mail users with capabilities needed to access and modify the locally-stored EPA Preference Set(s) and EPA Mail Room Operations Records associated with EPA Mailbox(es).

Background

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Tasks Performed

• EPA Mail Room Communication
• Mailbox Access Control
• Mailbox Key Value Maintenance and Validation
• Processing Preferences Modification.
• Filtering Preferences Modification.
• Preference Set Upload/Download to/from Mail Room.
• Operation Records Inspection and Copying.
• Local Preference Set Maintenance
• Preference Set History Maintenance

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Assumptions

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Data Structures

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Inputs

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Outputs

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Special Algorithms

• Preference Set Update
  • To avoid the ambiguity resulting from simultaneous access to a single Preference Set, the EMC and the EWC employ an HMS-independent semaphore mechanism.
  
  
• Mailbox Key
  • The EWC maintains an HSM-independent EPA mailbox records access access protection mechanism.

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Pragmatics

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