Inefficient use of memory and wasted processing steps might not be noticeable with a small number of records, but they can have a major effect with large numbers of records or users.

Which of the following is a commercial organization that issues digital certificates?

A) Commercial Authority B) Commercial Authenticity C) Certificate Authority D) Certificate Authenticator

The accompanying figure shows a join of the Business Analyst and Client tables. ____________________ properties are the properties that indicate which records appear in a join.

Fill in the blank(s) with the appropriate word(s).