The Modeling And Efficient Access Of Complex Data In Damage Analysis Simulation

With the development of computer simulation technology, in order to make the destruction process of missile attacking target in modern battlefield more realistic, the data models in this process has been becoming bigger and bigger not only in species but also in quantity, and the complex degree has been becoming higher and higher. And in order to make the destruction process more real-time, the higher requirements has been put forward to improve the access efficiency of database which has many complex data models. Therefore, the research of modeling and efficient access of complex data about damage analysis simulation has been put forward to realize the efficient access to the database in this damage simulation process. The main work of this paper is as follows:·The research on the multidimensional data modeling of damage simulation based on E-R model. For the damage simulation process of the missile explosion shock wave on the ship room, firstly set up the E-R model about this process, and then establish multidimensional data model according to some steps on the base of this E-R model, and at last establish the multidimensional data model of star about this damage simulation process.·The research on dimension reduction method of multidimensional data model. The dimensions of the multidimensional data model established previously may be complex, in order to put the model into relational database more convenient, the model has been operated on dimension reduction, namely to ease the original multidimensional data model in dimensions. And at last establish the new multidimensional data model of star.·The research on the method of optimizing the performance of accessing the database based on stored procedures. Make logical and physical optimization about the performance of accessing the database based on stored procedures and analysis that which data tables need to use stored procedures, and combine the usual physical optimization method(such as view index and so on) with stored procedures, then get the higher efficiency of accessing the database.·With the specific damage analysis simulation system, the research focuses on the process of accessing the established database after the modeling of complex data, and the optimization of the performance of the database access, and then analysis the final results.