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Curabitur et lectus vitae purus tincidunt laoreet sit amet ac ipsum. Proin tincidunt mattis nisi a scelerisque. Aliquam placerat dapibus eros non ullamcorper. Integer interdum ullamcorper venenatis. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas.
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Curabitur et lectus vitae purus tincidunt laoreet sit amet ac ipsum. Proin tincidunt mattis nisi a scelerisque. Aliquam placerat dapibus eros non ullamcorper. Integer interdum ullamcorper venenatis. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas.
Tuesday, February 5, 2013
Asia political
Friday, February 1, 2013
Fourth Generation Computer Languages
Using SQL you can retrieve data from a database in different formats for various conditions just by specifying the headings you need, where they are stored (tables), and the conditions.
Fig 4.3 compares the differences when instructing a computer using SQL and Visual Basic (Third Generation Language) to retrieve data from a database. The example prints a list of students who have obtained an Avg above 75 from a database. In the Visual Basic example you are required to write all the details on how the data should be retrieved. In the SQL example only the requirements need to be specified.