Study on the multimedia data models in the network automatic test system

According to the general structure requirement in the process of designing the database based on network automatic test system, this paper provides the require of data models based on the memory and query from the system. On this basis this paper compares the merits and defects from different data models such as the extended relational model, semantic data model and object-oriented data model and describes the basic frame of the database from the system which is that static structured data adopt relational data model and unstructured multimedia data adopt a method that is combining object-relational model with file system. Finally the paper achieves its general design.