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Evaluation of the ALCA Project

Evaluation of the ALCA Project. Workshop Group 1 Jeffrey Schott Bhavana Mungara Kiran Bojja Sri Harsha Meda. Presentation Overview. Overview of ALCA What method for Evaluation? Evaluation of ALCA Architecture Additional features we propose Analysis. Overview of ALCA.

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Evaluation of the ALCA Project

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  1. Evaluation of the ALCA Project Workshop Group 1 Jeffrey Schott Bhavana Mungara Kiran Bojja Sri Harsha Meda

  2. Presentation Overview • Overview of ALCA • What method for Evaluation? • Evaluation of ALCA Architecture • Additional features we propose • Analysis

  3. Overview of ALCA • Purpose of ALCA • Features • Architecture Overview

  4. Architectural Overview – Use Case Diagram

  5. Architectural Overview - Sequence Diagram

  6. Architectural Overview - Class Diagram

  7. Evaluation Method • ATAM • Comparison with other evaluation methods

  8. Evaluation of Architecture • Analysis of an existing component. • A function specified in the requirements but missing in the architecture. • Additional function to increase the reliability of the architecture. • Addition of a component to the architecture.

  9. Scenario 1 : Single Sign-On • “UMKC single sign on is used to login”. • Key attributes that affect the architecture: • Performance • Reliability • Security • Modifiability • Sensitivity and Tradeoff points • Analysis • Performance → Only have to login Once • User Friendly • Security → Can’t access application unless logged in. • Modifiability → Changes to the application do not affect single sign on.

  10. Scenario 2 :Update Grades • “ Teachers will be able to override the system assigned grade”. Original View : Changes Made:

  11. Scenario 2 :Update Grades (contd.) • Key attributes that affect the architecture: • Performance • Reliability • Sensitivity and Tradeoff points • Analysis • Performance & Reliability → Overcome incorrect grading algorithm → Overcome incorrect grading keys.

  12. Scenario 3 : Test Lock • Why Test Lock? Changes made:

  13. Scenario 3 :Test Lock (contd.) • Key attributes that affect the architecture: • Performance • Reliability • Security • Modifiability • Sensitivity and Tradeoff points • Analysis • Performance & Reliability → Accurate reflection of student performance • Security → Increase test security for teachers-students cannot retake the same test. • Modifiability → Allows for addition of test cancellation function. • Good for Traditional and bad for Adaptive

  14. Scenario 4: Cache DB • Saving test progress to resume a test • Requirement fulfilled by a Cache Database

  15. Scenario 4 :Cache DB (contd.) • Key attributes that affect the architecture: • Performance • Reliability • Sensitivity and Tradeoff points • Analysis • Performance & Reliability → Recover from system crashes → Prevents exhaustion of limited number of tests. • Good for Adaptive and Bad for Traditional

  16. Questions

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