System components of electronic data exchange

This module has two functions:

1) Accept commands and information from the user interface module and internal interface module, and generate various EDI messages such as orders and invoices in accordance with EDI standards and documents, after being processed by the format conversion module, the communication module sends them to other EDI users through the EDI network.

2) Automatically process messages sent by other EDI systems. During the processing process, it is necessary to connect with the information system of the unit, obtain necessary information and reply to other EDI systems, and at the same time, send relevant information to other information systems of the unit.

If the other party's requirements cannot be met due to special circumstances and cannot be properly resolved after repeated negotiations between the EDI systems of both parties, such events will be submitted to the user interface module for manual intervention and decision-making. In addition to the above five basic modules, the EDI system must also have the following basic functions

1) Naming and addressing functions

EDI end users must have is the only one that can be expressed. Naming and addressing functions include both communication and authentication aspects.

2) Security functions

EDI’s security functions should be included in all the above modules. It includes the following contents:

① Mutual authentication between end users and all EDI participants;

②Data integrity;

③Among EDI participants Electronic (digital) signature between;

④ Negate the possibility of EDI operation activities;

⑤ Key management.

3) Semantic data management function

A complete semantic unit (CSU) is composed of multiple information units (IU). The management service functions of its CSU and IU include:

①IU should be identifiable and distinguishable;