Research And Design Of The Grude Oil Storage And Conveyance Management System Based On The MIDAS Technology

The research of the distribute database(Distributed Database, call the DDB) begins from the 1970's in 20 century .Because of the expanding of the database application and the needing of computer hardware environment, especially the development of network calculating, the distribute database system emerges with the tide of the times, and becomes one of the most active research realm in the computer techniques.The first distribute database system SDD-1( System of Distributed Database) in the world is designed from 1976 to 1978 by the American calculator company( CCA), and put into practice on the DEC-10 and DEC-20 in 1979.After the year of 1980 in 20 century, the distribute database system enters to the stage of development .One side is that the cost descends ,because the calculating function is strengthened, and all of trades can purchase the computer, it is advantageous to deal with the distribute data; on the other hand because of the development of the network calculating techniques, the lower expenses that data delivers, especially the extensive application of the microcomputer and super microcomputer ,and the emergence of the LAN, it can provide the essential conditions for the research and realization of the distribute database system .In fact, whether in the military or the civilian area ,the distribute database technique have the deep apply background .Therefore , all countries throw in a great deal of manpower, financial power and material resources to study the distribute database system .The United States, Western Europe, Japanese etc. all put forward the great scale research plan about the distribute...