« previous next »

Author Question: If an input from a source appears on a level-0 diagram, it must: A) appear on the context ... (Read 48 times)

Engineer

  • Hero Member
  • *****
  • Posts: 527
on: Jul 7, 2018
If an input from a source appears on a level-0 diagram, it must:
 
  A) appear on the context diagram.
  B) be connected to a data flow.
  C) be connected to a sink.
  D) be connected to a data store.
  E) be connected to two entities.

Question 2

An association between the instances of one or more entity types that is of interest to the organization best defines:
 
  A) occurrence.
  B) relationship.
  C) natural connection.
  D) cardinality.
  E) entity link.


momo1250

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 7, 2018
Answer to Question 1

A
Explanation: A) The boundary or scope of a system, and the system's relationship to its environment, is represented by a data-flow diagram called a context diagram beginning with an input on level-0.
CL

Answer to Question 2

B
Explanation: B) The relationship is represented by lines and verbs are used to describe the relationships.
CL


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

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?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Bacteria Diagram Bacteria Diagram
Animal Cell Diagram To Label Animal Cell Diagram To Label
Schematic diagram of fluidization apparatus Schematic diagram of fluidization apparatus
Mechanisms of pain at the nociceptor level. Mechanisms of pain at the nociceptor level.
Place sheet or towel over area to be heated. Use sufficient heat barrier for the heat source used. ... Place sheet or towel over area to be heated. Use sufficient heat barrier for the heat source used. ...
A Drug’s Plateau Level A Drug’s Plateau Level
Video: Barriers - eye structures, digestive mucosa, respiratory mucosa & genitourinary mucosa

For a complete list of videos, visit our video library