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NEED FOR DBMS? A Database is an organised, persistent collection of data of an organisation.    ·        The File Based System . File based system are an early attempt to computerize the manual filling system. For example, a manual file can be set up to hold all the correspondence relating to a particular matter as a project, product, task, client or employee. The manual filing system works well when the number of items to be stored is small.   ·        The Database Approach. A database is a persistent collection of logically related data . A DBMS controls access to this data and thus needs to provide feature for database creation, data manipulation such as data value modification, data retrieval, data integrity and security etc. Advantage.   1.    Reduction of redundancies   2.    Shared data   3.    Data independence   4. ...

The  air quality  in  Delhi , the capital of India, according to a  WHO  survey of 1600 world cities, is the worst of any major city in the world.   Air pollution  in India is estimated to kill 1.5 million people every year; it is the fifth largest killer in India. India has the world's highest death rate from  chronic respiratory diseases  and  asthma , according to the WHO. In Delhi, poor quality air irreversibly damages the lungs of 2.2 million or 50 percent of all children. Causes of poor air quality Motor vehicle emissions  are one of the causes of poor air quality. The  Badarpur Thermal Power Station , a coal-fired power plant built in 1973, is another major source of air pollution in Delhi. Despite producing less than 8% of the city's electric power, it produces 80 to 90% of the  particulate matter  pollution from the electric power sector in Delhi.During the  Great smog of Delhi  in N...

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.........THE Internet is a connection of millions of computer.......... The Internet has revolutionized the computer and communications world like nothing before. The invention of the telegraph, telephone, radio, and computer set the stage for this unprecedented integration of capabilities.   Nikola Tesla toyed with the idea of a “world wireless system” in the early 1900s, and visionary thinkers like Paul Otlet and Vannevar Bush conceived of mechanized, searchable storage systems of books and media in the 1930s and 1940s. Still, the first practical schematics for the Internet would not arrive until the early 1960s, when MIT’s J.C.R. Licklider popularized the idea of an “Intergalactic Network” of computers. Shortly thereafter, computer scientists developed the concept of “packet switching,” a method for effectively transmitting electronic data that would later become one of the major building blocks of the Internet.The Internet is at once a world-wide broadcasting capabilit...

THE INDIAN Software industry has been showing an impressive record over the past decade. The use of e-mail, e-governance and development of information technology shows that India is slowly transforming itself into a knowledge based economy. The India is soon emerging as a knowledge bank.

Education is a liberating force, and in our age it is also a democratising force, cutting across the barriers  of caste and class, smoothing out inequalities imposed by birth and other circumstance.  if you want the present to be different form the past, study the past