Author Question: Watching someone type their password in order to learn the password is called ________. A) ... (Read 155 times)

Davideckstein7 · **on:** Jul 7, 2018

Watching someone type their password in order to learn the password is called ________.

A) piggybacking
B) shoulder surfing
C) Both A and B
D) Neither A nor B

Question 2

Explain the meaning of cardinality as it relates to database design.

What will be an ideal response?

amy.lauersdorf90 · **Reply #1 on:** Jul 7, 2018

Answer to Question 1

Answer: B

Answer to Question 2

Cardinality refers to the number of records allowed in a related table. A business, for example might have a rule that each customer can have no more than three emails listed. So the Email entity would have a maximum cardinality of three. DBMSs, however, do not generally have the relational tools to enforce these cardinality limits. At most they can specify that at least one record is required. To enforce cardinality rules usually requires the use of triggers or other programming.