Reference no: EM131226328 , Length:
One of the measures of good system design is how costly, difficult, or intrusive it is to make changes to that system. Consider the problem of a business owner who has decided to use neon for his store-front signage.
Neon signs, in which data (information) presentation is bound together with the sign itself, may have to be completely rebuilt to make even a relatively simple change.
As a result, any update to that signage is going to take time and money and will limit the owner's ability to advertise whatever content he wanted on that sign. In addition, the change requires special expertise-expertise that the owner or his staff may not possess.
The choice of neon is an example of a tightly coupled solution. On the other hand, digital signage is quick and easy to update, costs very little, and requires no special training to execute. This is a loosely coupled option.
Another measure of good design is simplicity. It is easier to follow and execute simple and distinct directions than complex and muddled ones. The same holds true for objects within a system. Objects that perform one distinct activity are easier to understand and to create than objects that have a multitude of functions and activities. "Single-minded" objects (as your text refers to them) have high cohesion.
Multi-functional objects have low cohesion. In this Discussion, you examine the goals of coupling and cohesion and the approaches to design you use to achieve those goals for your design.
Using your readings from this unit and the Internet, examine the concepts of coupling and cohesion as they are defined and used in both an object-oriented design approach and in a structured design approach.
Thinking as a systems analyst, which approach best enables you to design a system that meets the goals of low coupling and high cohesion? Why? Support your position with examples (e.g., functional, sequential, communicational, or iterative).
Defend and support your opinion and cite your sources according to APA guidelines.
|
Draw a level 0 dfd for the order system
: Draw a Level 0 DFD for the order system. Justify the choices you made in your context diagram and DFD - Briefly compare the structured approach you use here with the object-oriented approach outlined in your reading.
|
|
Calculate freds net capital gain for the current year
: HI6028 Taxation, Theory, Practice & Law Assignment. Calculate Fred's net capital gain for the current year. Assume he also has a net capital loss from last year of $10,000 arising from the sale of shares. Would your answer be different if the loss ..
|
|
What the future hold financially and take care of managing
: Working in corporate finance means you would assist a company finding money to run the business, to make sure the business grows, make purchase, and plan for what the future hold financially and take care of managing any money in hand.
|
|
Why you think the essential self can or cannot change
: Describe your "essential self"-that is, the set of characteristics that defines what makes you a particular person. If you do not believe an essensial self exists, explain why not.
|
|
Examine the goals of coupling and cohesion
: Examine the concepts of coupling and cohesion as they are defined and used in both an object-oriented design approach and in a structured design approach -
|
|
Progress for employees working on long-range projects
: How can managers provide a sense of progress for employees working on long-range projects that might not show results for months or even years?"
|
|
Identify the stakeholders potentially affected
: Identify the stakeholders potentially affected by what Daniels decides to do. How might each stakeholder be affected by Daniels's action and decision? Use ethical reasoning to support your answer.
|
|
Establishing measurable criteria of specific activities
: This involves establishing measurable criteria of specific activities and mechanisms to assess current systems and branding efforts as well as provide feedback to the proper departments and individuals so that needed changes can be implemented.
|
|
Briefly explain the basic tenets of each religious tradition
: Explain the basic tenets of each religious tradition, and how they define an individual's role in the world and his/her relationship with the deity. For each, include at least two examples of art which that tradition influenced.
|