A key is a unique identifier that should be created and used when designing a database for each type of entity, in order to store and retrieve data accurately. Select one: a. foreign b. super c. primary d. candidate e. surrogate

When you type the pwd command, you notice that your current location on the linux filesystem is the /usr/local directory. answer the following questions, assuming that your current directory is /usr/local for each question. a. which command could you use to change to the /usr directory using an absolute pathname? b. which command could you use to change to the /usr directory using a relative pathname? c. which command could you use to change to the /usr/local/share/info directory using an absolute pathname? d. which command could you use to change to the /usr/local/share/info directory using a relative pathname? e. which command could you use to change to the /etc directory using an absolute pathname? f. which command could you use to change to the /etc directory using a relative pathname?

Select the correct answer from each drop-down menu. which types of computer networks are bigger as well as smaller than a man? a man is a network of computers that covers an area bigger than a , but smaller than a .

What percentage of teens plays video games? a.97% b.100% c.74% d.50%