Author Question: Reuse can apply to any ________ that is required in software development. A) product B) ... (Read 27 times)

Jramos095

  • Hero Member
  • *****
  • Posts: 528
Reuse can apply to any ________ that is required in software development.
 
  A) product
  B) experience
  C) expertise
  D) all of the above

Question 2

Describe basic object-oriented concepts in the context of structural modeling.
 
  What will be an ideal response?



s.meritte

  • Sr. Member
  • ****
  • Posts: 306
Answer to Question 1

D

Answer to Question 2

Classes and objects are black boxes: their outside is visible while their inside is not. This characteristic is achieved through encapsulation, the enclosing of data and processes within one single unit. Information hiding, which follows encapsulation, ensures that the inner entities and the workings of the object are concealed (and safe) from outside entities.
Encapsulation results in two spaces: public (the outside) and private (the inside). What the object offers to the public is called its interface. The interface is both the services that an object provides and the form that these services take. Since, in an information system, the only reason for an object's existence is the services that it offers to other entities, the interface of the object is characterized as a contract or a binding agreement.
Under this contract, an object assumes certain responsibilities. The responsibilities fall into two categories: what the object knows, or attributes, and what the object does, or operations. A class defines the responsibilities and its instances (the objects) carry them out.
Even though an object is a building block of an information system, it might be composed of other objects. Such objects are called composite objects. A collection object is a composite object that is made up of objects instantiated from the same class. Composite objects may belong to a hierarchy: a component of a composite object may itself be a composite object.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

For a complete list of videos, visit our video library