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[20 Oct 2015 | No Comment | | by jawad]

The integrity  rule classification  scheme is rather  different from the scheme described  here in this article . First  SQL  divides such rules  into three broad categories  as follows:
1. Domain  rules
2. Base  Table rules
3. General  rules ( ” Assertions”)
Domain and Base tables  recall in  particular that  the category ” base table rules ” includes  various  candidate key , primary key   and foreign key specifications also “check constraints”.
Here we can say a few lines of some  part of it.
1. An SQL domain rule  is not ( as it should be) limited  to …

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[19 Oct 2015 | No Comment | | by jawad]

The archaeological evidence in the shape of low and high mounds scattered throughout the ancient city of Uchchh  sharif shows that saga of human toil and labour in these areas must  have started very early , perhaps  sometimes during the pre or proto historic times when the region possessed flourishing  centers of the famous indus valley civilization. These centers existed for a considerably long time when natural calamity  as well as human vandalism gave a death blow to them and eventually turned them into dust-laden  mounds. It is now difficult …

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[14 Oct 2015 | No Comment | | by jawad]

A fluid is a system of particles  loosely held together by their own cohesive forces or by the restraining forces exerted  by the walls of a container. In contrast to the particles in a rigid body which  are permanently   into fixed  positions. The particles in a fluid body  are more or less free to wander  about  within  the volume of the body.

A fluid will flow , that is, it will change its shape in response to the forces exerted  by gravity and the container. The difference  between these two kinds …