Shared access to data
Once the registration of engineering data into a PDM system, how we can do without affecting its security under the premise of sharing its data with an excellent architecture of the PDM system to take advantage of "electronic data warehouse" to protect and store project data. Electronic data warehouse may be caused by one or more "storage position" constituted, they are distributed throughout the heterogeneous network computing environment. Stored in "electronic storage" in the engineering data according to rules governing the use PDM system, and can be authorized users. The ERP system in the product definition data sharing capacity is limited.
Product structure and product definition data
In many enterprises, product mix planning is the preparation of engineering parts and components from the design department list began. Engineering parts list manually entered into the ERP system, and created according to plan view as a bill of materials (BOM) to start. Created according to plan view to determine the bill of materials is achieved by modifying the list of project components, and together with other program information a balance between demand and existing production equipment, materials and labor resources can be used directly between. Modern PDM system has been able to achieve product structure and function, it not only can replace traditional engineering parts list, but also provides an easy-to-use graphical interface, allowing users to easily locate and use of product definition data. The more advanced PDM systems using object-oriented data management tool, so that the product can be defined data and product structure, components, sub-assembly, assembly linked. The user can use navigation tools, graphical product structure along the tree to determine the location of part of interest, and on this basis, begin to describe the components of product definition data.
PDM control, change management
ERP system from the view point of product plans, change management, once you change the details of the adoption of the design process, and the impact of changes on the manufacturing process has also been clear that the process of manufacturing scheduling in the ERP system will be re-run to determine the demand, inventory, resource availability, component replacement, etc. in need of change.
However, PDM system change control and approval processes is from an entirely different perspective. PDM can track the change control to change the entire process: from the time when the proposed changes runs through all of the affected functions, until the changes to be implemented in the production workshop. PDM workflow to ensure that the appropriate personnel to perform the necessary tasks and be responsible for notification to all affected departments. When the engineers received a deal with the task of design changes, he will navigate through the database to find the relationship between the product structure of the affected objects and design data.
Conceptual approach to change control using the PDM Another advantage is the ability to keep versions of changes to historical information. If a product is modified, the parts of the product mix changes made to the historical record will be saved in the PDM system. If users use PDM product data structure, he can use the database to find the relationship between the navigation function of the changes have been implemented instructions and data objects. Without this capability, the details of the change information in the process of organization of the archive can be "lost." When the subsequent change requests need to search for a particular design of the old configuration, the design of the old configuration but because results of the analysis was not applicable and have been removed, and this will affect the overall design.
Configuration Management
In the area of product structure and product configuration management, ERP systems and the overlap between the PDM system functionality was particularly prominent. All enterprises will be used simultaneously multiple views of product structure, which is the product configuration management concepts. Typically, most enterprises will have at least three types of view: according to the design view, according to production plan view and by manufacturer view. Product structure view can be seen as parts of the same product in different ways the results observed. ERP system, because the production-oriented program, the production plan according to the view management product configuration; while PDM system is that, in considering multiple design options, the configuration management requirements from the early product planning stage began. From conceptual design to the view according to the management of all stages of manufacturing, PDM products are constantly upgrading the product mix includes product configuration view of efficiency. In product design throughout the life cycle, although the product structure may be re-configured according to various views, but the product parts are still the object of the data with those who define their relationship to stay connected. This is the PDM view of the main advantages of dealing with configuration management.
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