Mercury is the only common metal which is liquid at ordinary temperatures. Mercury is sometimes called quicksilver. It is a heavy, silvery-white liquid metal. It is a rather poor conductor of heat if compared with other metals but it is a fair conductor of electricity. It alloys easily with many metals, such as gold, silver, and tin. These alloys are called amalgams.
describe big data, so that you can speak intelligently about it when asked. So probably the main thing to recognize is this notion of the three V's of big data, which are volume, velocity and variety.
The 3Vs have been expanded to other complementary characteristics of big data: 1  Volume: big data doesn't sample; it just observes and tracks what happens. 2  Velocity: big data is often available in real-time. 3  Variety: big data draws from text, images, audio, video; plus it completes missing pieces through data fusion.