2.5.5.2.1 Accessing Data from a Data Service

Goal: A web client retrieves or updates data from a data service.

Context of Use: A web client accesses data on a data service.

Primary Actor: The primary actor is a web client.

Supporting actor: The supporting actor is a data service that provides the data store, which the web client retrieves or updates.

Preconditions:

Trigger: The client makes a request to access data from the data service.

Main Success Scenario:

  1. The client sends the request to the data service by using an HTTP header.

  2. The server processes the request and sends a response to the client.

  3. The web client processes the response.

Minimal Guarantees: The web client cannot access data from the Web service. No data in the data store changes.

Success Guarantee: The web client retrieves data from the data service and updates it.