Register
Which of the following is true about a key? It may be non-unique. It may be unique. It can only identify one row. Both A and B None of the above
98.1k views
0 votes
Which of the following is true about a key?

It may be non-unique.
It may be unique.
It can only identify one row.
Both A and B
None of the above

User Sk Bindas
by
6.1k points

1 Answer

6 votes

Answer:

It may be non-unique

Step-by-step explanation:

User ShinTakezou
by
6.0k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

7.2m questions

9.5m answers

Other Questions

A piston-cylinder device fitted with stops in the cylinder walls contains 2.1 kg of water initially at 150 kPa and 30 °C. Heat is transferred to the system until the final temperature reaches 250 °C. The
A water towers lowest point is 405 ft and the main line is 6 feet below the ground. The ground elevation is at 276 ft. The main line travels 2.9 miles. The pipe will travel through the following flanged
An activated sludge plant is being designed to handle a feed rate of 0.438 m3 /sec. The influent BOD concentration is 150 mg/L and the cell concentration (MLVSS) is 2,200 mg/L. If you wish to operate the
A car has an initial speed of 10 m/s. It then undergoes a constant acceleration of 0.05 m/s^2 over a distance of 5 km. Determine: a) The car final speed. b) The time needed to travel the 5 km.
In solid motors, HTPB and PBAN are two common types of plasticizers. a) True b) False
Link Copied!