When the primary key of one relation is placed into a second relation, it is called a:

a. field key.

b. referential integrity.

c. foreign key.

d. candidate key.

e. relocated key?

Which of the following best describes the constraints within a model? O They modify the values They evaluate the outcomes They limit the choices available They add more choices and options

Which of the following is the component of the processor that directs and coordinates most of the operations in the computer? A. register B. arithmetic logic unit C. control unit D. machine cycle

Write a recursive function that calculates if two binary trees are similar?

What tool is used to store and quickly retrieve the usernames and passwords for servers and web sites that you have visited?

For which of the following purpose can a database be used? A. to store ionformation B. to keep track of items in a warehouse C. to track the statistics of athlets and sport tems D. all of the above

A Windows Live ID is used to make a video of a presentation. e-mail a presentation. broadcast a slide show. save as a PDF of the presentation.

When you create a new folder, the default name for the folder is blank folder. true or false?

How does the theodolite work?

Which statement must be included in a program in order touse a deque container? a. #include vector b. #include c. #include container d. #include deque

Two blue armies are each poised on opposite hills preparing to attack a single red army in the valley. The red army can defeat either of the blue armies separately but will fail to defeat both blue armies if they attack simultaneously.