Questions

A candidate key is a column, or set of columns, in a table that can uniquely identify any database record without referring to any other data. Each table may have one or more candidate keys, but one candidate key is unique, and it is called the primary key.

The origin of the Sutlej River is located close to Lake Rakhastal in Tibet in the vicinity of the Kailash Mountain Range. The Sutlej River usually runs according to a west to southwest itinerary moving into India via the Shipki La Pass located in Himachal Pradesh.

The Tank irrigation is more in the rocky plateau area of the county, where the rainfall is uneven and highly seasonal. The Eastern Madhya Pradesh, Chhattisgarh, Orissa, Interiors of Tamil Nadu and some parts of Andhra Pradesh have more land under tank irrigation.Well Irrigation is common in alluvial plains of the country except the deserts of Rajasthan. Plains of UP, Bihar, Gujarat, Karnataka & Tamil Nadu are the states which are more prominently under the well irrigation.These areas have huge groundwater reserves.

Well irrigation is much older than tank irrigation in India.

The temperature danger zone for the food that cannot be stored for long time is between 5 degrees to 63 degrees centigrade.