A device that stores approximately a billion characters of data holds one ____.

where Emp21 is stored at site B and Emp22 is stored at site C. A query at site A wants the names of all managers in the accounting department whose salary is greater than their age. Design a plan for this query, using the assumptions on page 704 for table and attribute sizes. Assume that the items in the Age column are two bytes long.

Suppose that we have a relation Employee2 (SSnum, Name, Salary, Age, Title, Location) which is partitioned as Emp21 (SSnum, Name, Salary) Emp22 (SSnum, Title, Age, Location) What will be an ideal response?

Select the term that is used to describe a trusted third-party agency that is responsible for issuing digital certificates:

A. Registration Authority B. Delegation Authority C. Certification Authority D. Participation Authority