Answer:
Explanation:
Referential integrity is the state in which all values of all foreign keys are valid. Referential integrity is based on entity integrity . Entity integrity requires that each entity have a unique key.
Hope this helped and have a good day
Answer:12 oxygen atoms are in 4 molecules of HNO3
Explanation: the amounts of atoms of all the component in HNO3, which are 1 atom of Hydrogen, 1 atom of Nitrogen and 3 atoms of Oxygen.
Answer:
Option D: UNII-3
Explanation:
According to the 802.11 standard, 23 20MHz wide channels are defined in 5 GHz specturm. Each channel is 20MHz apart and they are separated into three Unlicensed National Information Infrastructure (UNII) bands. 802.11a/n/ac wireless devices can operate within these bands. In United States, UNII-3 is the upper UNII band that spans from 5.725 GHz TO 5.825 GHz and therefore it is the band that access point is operating. UNII-3 is not used in Europe countries for wireless communication.
Explanation:
Mechanical engineer may design a gps for a vehicle.
