In most tables, one of the fields uniquely identifies each record and is called the ____.

Excel's ________ feature allows the user to move data from place to place by clicking on the data and holding down the left mouse button as the mouse is moved

Fill in the blank(s) with correct word

Which of the following technologies is designed to keep systems uptime running in the event of a disaster?

A. High availability B. Load balancing C. Quality of service D. Caching engines