Transportation subsystem design of third-party logistics information system

In order to reduce the complexity of the transportation subsystem design of third-party logistics information system in the system structure design, the transportation subsystem was divided into five parts, such as business system, monitor, query and statistic, finance interface and transportation fee adjustment; in the business flow design, Petri net was adopted to describe most business logics in order to optimize the transportation subsystem; in the database design, entities were identified from documents, data flow diagrams were drawn up based on interfaces, the relationships among entities(E-R) were identified from E-R diagrams, E-R were converted into relationship models and became the basic structures of tables in the database, and the method to organize entity sets and database tables in terms of the concept "family" was proposed, 125 pieces of tables established according to physical data model were divided into 14 families.These design methods can simplify the transportation subsystem structure design and improve project quality.