THE COURSE IS IT 243 SYSTEM ANALYSIS Learning Outcome(s): Chapt.(7) Three design

Question

THE COURSE IS IT 243 SYSTEM ANALYSIS

Learning Outcome(s):

Chapt.(7) Three design strategies

Question One

List the three design strategies, and give at least 2 advantages and 2 disadvantages of each.

5 Marks

Learning Outcome(s):

Chap. (8) Architecture Design: Understand the difference between fat and thin clients

Question Two

Differentiate between fat and thin clients. (3 points)

State two advantages of using thin clients over fat clients. (2 points)

5 Marks

Learning Outcome(s):

Chap. (8) Architecture Design: Understand the pros and cons of n-tiered architecture

Question Three

Suppose that your uncle is a real estate agent and he decided to have a web-site to list his available real estate properties. And use a laptop computer to show clients these properties. What hardware is needed to have a web-site and client to browse the properties on that web-site? How many (n-tired) computers are needed for this system? List at least one advantage for this new system?

5 Marks

Learning Outcome(s):

Chapt. (9)User Interface Design

Question Four

Discuss the major principles for User Interface Design?

5 Marks

Learning Outcome(s):

Ch. (6)

Understand and being able to build ERD.

Question Five

What are three main steps associated with building the (ERD), list these three steps?                                                    

Explain how do you represent, 1-to-1 (1:1), and 1-to-many relationship (1:N)   and many-to-many relationship (M:N) ?

10 Marks

Learning Outcome(s):

Ch. (6)

Building ERD

Question Six

Case Study: describe using ERD diagram how the university can manage Building, Classroom, Course, students, and Instructors, each of which is a table that is drawn indicating Primary Key, and Foreign key. Then explains how the university can add a new course without conflicting with others courses’ time and classroom.

Notice: the relation between Course and Student is m-to-m because a Student may have more than one Course has more than one student.

Draw the ED-D using crows-feet notation. Show the entities and relationships between entities (Building, Classroom, Course, student, Instructor). Indicate the PK primary key, and FK foreign key in each table)

THE COURSE IS IT 243 SYSTEM ANALYSIS

Explanation / Answer

Question One:

Three design strategies:

1. Structured Design

2. Function Oriented Design

3. Object Oriented Design

1. Structured Design:

Advantages:

Disadvantages:

2. Function Oriented Design:

Advantages:

Disadvantages:

3. Object Oriented Design:

Advantages:

Disadvantages:

Question Four:

Principles for User Interface design:

Simplicity: Design must make humble, common tasks simple to do, communicating clearly and humbly in the user’s own language, and providing good shortcuts that are expressively related to lengthier procedures.

Visibility: Design must keep all wanted options and materials for a given task visible short of distracting the user with redundant data.

Feedback: Keep users informed of actions, changes of state and errors that are related and attention to the user through perfect, concise, and unambiguous language familiar to users.

Structure: Begin the user interface usefully, in meaningful and useful methods based on clear, consistent models that are easy and recognizable to users, placing related things together and divide unrelated things.

Tolerance: Design must be flexible, decreasing the charge of faults and misuse by allowing undoing and rebuilding, while also escaping errors wherever possible by tolerating varied inputs and sequences and by interpreting all reasonable activities.

Reuse: Design must reuse internal and external components and behaviors, keeping consistency with purpose rather than simply arbitrary consistency, thus reducing the need for users to rethink and recall.

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