1 / 16

MT-211 Tutorial - 10

MT-211 Tutorial - 10. Content Parsons Chapter 10 Revision Specimen Examination Paper TMAs Review Courteous of Mr. Vicmon Fan. Parsons Chapter 10 – Data Representation. Read it yourself to understand:

melita
Download Presentation

MT-211 Tutorial - 10

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. MT-211 Tutorial - 10 Content • Parsons Chapter 10 • Revision • Specimen Examination Paper • TMAs Review Courteous of Mr. Vicmon Fan

  2. Parsons Chapter 10 – Data Representation • Read it yourself to understand: • how number of bits affects the amount of information represented (n bits represent 2n different combinations) • different data representation • number representation • character representation • video representation • sound representation • data compression • technique used to compress data to trim down file size for storage and transmission • e.g. pkzip for Windows; tar for UNIX

  3. Revision - Software Development Life Cycle (SDLC) The SDLC usually consists of the following activities: • User Requirements (Chapter 32, partly) • System Analysis (OOA: Chapters 33-37) • System Design (OOD: Chapters 43, 45, 46) • Implementation (MT210) • Maintenance (MT210, partly)

  4. Revision - Requirement Analysis • Goal: A negotiated and unambiguous statement of requirements. • All subsequent design is based on this Negotiated Statement of Requirements • Technique: Q & A sessions (from broad to narrow scope)

  5. Revision - OOA and OOD • Uses CARC technique • Identify: • Classes (OOA) • Associations (OOA) • Responsibilities (OOD) • Collaborations (OOD)

  6. Revision - OOA (1) • Identifying Classes • Textual/Noun Analysis • Noun or Noun Phrases – Classes • Verb or Verb Phrases (or propositions) – Associations • Identifying is-a-kind-of Relationship • Representing as superclass (abstract or concrete) and subclass relationship

  7. Revision - OOA (2) • Identifying Associations • Class-Association Matrix • Verb Analysis • Verb or Verb Phrases (or propositions) • Name the Association • Determine the Multiplicity • One-to-one • One-to-many • Many-to-many

  8. Revision - OOA (3) • Class-Association Diagram Notation • All names start with capital letter – use hyphen or capital-first-letter to separate a multiple-word name. Must be descriptive. • Class - a rounded rectangle with a name inside • Association • Must have a name • Line and solid dot for 1 and many multiplicity respectively • Arrow for navigation direction

  9. Revision - The Object Model (1) • Class-Association Diagram • Orchestrating instance • Classes • is-a-kind-of relationship • Associations • multiplicity • navigation directory (if can be determined)

  10. Revision - The Object Model (2) • Textual Representation of the Class • Orchestrating instance • Class description and responsibilities • specify is-a-kind-of relationship, if any • Invariants

  11. Revision - OOD – Responsibilities • Recording information (I) • implemented by instance variables • Performing actions (A) • implemented by instance methods • Only method heading is required • Keeping track of related objects (R) • for representing associations between classes • often a Collection is used to keep track of more than 1 instance of the other class • Performing actions described by walk-throughs (O) • implemented by instance methods of orchestrating instance

  12. Revision - OOD - Collaborations • One-to-One • Use an instance variable • hold reference of the object in the direction of navigation • One-to-Many • Use an instance variable • hold reference of the (collection) object with respect to the many side of the navigation • Many-to-Many • Use an instance variable (holding a collection) • hold reference of the (collection) object in the direction of navigation

  13. Revision - HCI – Its Importance • safety • commercial success of software • enabling techniques that would be impractical without software • lowers training costs • extraordinary HCI (special interface to help users with disability) • productivity and efficiency • quality of life of users

  14. Revision - User Interface Design Approach • Style Guides • collection of design principles and rules for developing consistent user interface • User-centred Design • Use of design principles and data collection techniques: • Think User, Think Task, Think Situation) • Teleocentric (Usage-centric) Design • Emphasize the purpose of the software being designed • Developer creates software tools which enable users to achieve their goals easily and quickly • Techniques: use-case and essential use-case

  15. Revision - Direct Manipulation • Continuous representation of the objects of interest • Replacement of complex commands by direct manipulation of the object through intuitive means such as labelled button presses • Rapid, reversible, incremental actions

  16. Last but not Least • Prepare for the Examination • Specimen Exam Paper ( download from OLE ) • TMA & reviews • Revision Notes ( download from Vicmon’s site ) • Exam Guide ( download from Vicmon’s site ) Wish you all Good Luck in the Exam! Thank you very much!

More Related