A primary key:
A) has the same value for all records in a relational database.
B) must contain a unique value for each record within a table.
C) is a unique record within a relational database.
D) must include letters.
B
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Case C-1Will has completed the illustration of a flower and now he wants to make a few improvements to it. Will wants to create some clouds by converting a square currently in place into an ellipse. He wants to specify the size dimensions for the ellipse in relation to the originally selected square. Which of the following options lets him specify these size dimensions in this way?
A. Relative B. Absolute C. Dynamic D. Perspective
Interactive processing is also known as ____.
A. batch processing B. coupling C. short-circuit evaluation D. real-time processing
Through the onscreen display (OSD) menu, the technician has selected the proper video input; however, nothing displays on the monitor. What are the two most likely problems? (Select two.)
A) The wrong driver is installed. B) A cable is not connected securely on either end. C) The display backlight is broken. D) The display power supply is faulty. E) No device is sending video to the display.
____ technology essentially takes the data to be transmitted and rather than transmitting it in a fixed bandwidth spreads it over a wider bandwidth.?
A. ?Spread spectrum B. ?3DES C. ?AES D. ?PKI