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Tuesday, February 5, 2013

Asia political

Some of the world’s first great civilizations sprang up in Asia from 3500 BC onwards. Their riches attracted trade and conquering armies. Over the centuries peoples such as the Mongols and the Turks built up and then lost vast empires. From the 1800’s much of Asia was colonized by European countries. These new rulers took away wealth, but did not help the colonies develop their industries. Great social changes have taken place in Asia during this century. Many colonies freed themselves from their European rulers, creating independent nation...

Friday, February 1, 2013

Fourth Generation Computer Languages

When you use a third generation language to perform a task you need to provide a detail description of how this task should be carried out. For very narrow domains (specific areas) fourth generation programming languages have been developed, where you only needed to describe what is required. The most famous example of a fourth generation language is the Structured Query Language (SQL) which is used with databases. Using SQL you can retrieve data from a database in different formats for various conditions just by specifying the headings you need,...