The Design Of Security Spatial Database-Sec_Vista

To refer to "Trusted Database Management System of TCSEC" that the Department of Defense announced, we have designed multilevel security database system—SEC_VISTA dependently. This paper has introduced the importance of database security, has discussed the mechanism of guaranteeing database security, and has studied further how to realize security database, which include establishing database security model, implementing access control strategy, encrypting data and auditing. Finally we give the architecture of the SEC_VISTA, in which there are multilevel security model, discretionary and mandatory access control strategy and so on.The technical innovation of SEC_VISTA is as follows:(1) Autonomy of database system's kernel. The kernel of database system is the spatial database management system—VISTA that we developed independently and had autonomous copyright. we developed secure modular on the foundation.(2) The concept of role is supplied in discretionary access control.In a word, it is necessary to realize SEC_VISTA for studying security theoretic and developing technical related to the theoretic closely.