This topic contains a solution. Click here to go to the answer

Author Question: When purchasing a software package, a successful definition phase ends with a(n): A) system ... (Read 95 times)

haleyc112

  • Hero Member
  • *****
  • Posts: 600
When purchasing a software package, a successful definition phase ends with a(n):
 
  A) system testing plan.
  B) vendor contract.
  C) system design.
  D) RFP.

Question 2

How do we model components?
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Hikerman221

  • Sr. Member
  • ****
  • Posts: 346
Answer to Question 1

B

Answer to Question 2

The standard UML icon is a box with two tabs, similar to a plug. Components, however, can also be represented by stereotyped boxes. A component can be modeled both as a black box that hides its internal structure, and as a white box that exposes that structure.
In black-box modeling, we represent the interfaces that the component supports as lines that end in a circle. The outside world can interact with the component only through these interfaces. In turn, if the component requires an external interface in its environment, the requirement is shown as a line ending in a half-circle. This arrangement is often called ball and socket because the interface provided by one component must fit into the socket provided by its client.
In white-box modeling, the internal structure of the component is shown as a diagram inside the stereotyped box that represents the component. The communication between entities inside the box and outside entities takes place through ports, shown as small boxes that are situated on the borders of the component box. An incoming port delegates a provided interface to an object, or another component, inside the component. An outgoing port conveys requests by internal entities to the required interface of an outside component.




haleyc112

  • Member
  • Posts: 600
Reply 2 on: Jul 7, 2018
YES! Correct, THANKS for helping me on my review


diana chang

  • Member
  • Posts: 288
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

For a complete list of videos, visit our video library