Applying SHA-1 to object-relational access layer design

When designing the object-relational access layer,encapsulating algorithm of generating object identifier(OID)in OIDM can improve the transplantable performance of application.Analyzing the architecture of object-relational access layer and OID generating strategies,128 bit random number algorithms is not adapted to the increment of the data processing and data storage.According to the characteristics of 160 bit SHA-1 algorithm,a new idea that applying it to object-relational access layer design is presented,followed by the implementation model of software in java.