Concept and introduction of sap r/3 System

* ERP: a common form of modern enterprise management systems

* Basic Principles of ERP: give enterprises the direction to implement an excellent ERP system and tell them how to do it.

* Full name of SAP: System Applications and Products in Data Processing, that is, the data processing system, applications, and products

* ERP (Enterprise Resource Planning) is based on the advanced management ideas of modern enterprises. It uses information technology to provide decision-making, planning, and control for enterprises.

And a comprehensive and systematic solution platform for business evaluation. It is a management idea, including management means, corresponding information systems and implementation methods.

* The development of ERP has gone through three phases:

1 MRP (Material Requirements Planning material demand plan) is mainly used for inventory control

2 mrp ii (manufatory Resources Planning Manufacturing Resource Plan) is mainly limited to manufacturing

3 ERP

* The core idea of the ERP system is to integrate resources in the enterprise and comprehensively manage the three major flows of the enterprise-logistics, capital flow, and information flow.

* The basic structure of the sap r/3 system consists of three parts: database, application layer, and display layer.

* R in R/3 means real-time processing (Realtime), that is, the data is processed by the computer immediately after the data is input.

* The R/3 system has three levels of Client/Server structure, including the display layer (User Interface accepted for user interaction), application layer (system processing and Development Platform), and database layer.

(Store data and R/3 warehouse objects)

* The sap menu is a standard menu customized by the system. The user menu is specifically required by the system administrator according to the daily business of the end user.

* A Basic sap screen is generally divided into menu bar, Standard toolbar, title bar, and application toolbar.

Application toolbar and main screen area and status bar

* F1 and F4 help

F1 help is the online help for fields, menus, functions, and messages.

F4 help provides users with input value information for the current screen field, which is also called input help.

* Online system help

Aplication help (Application help) provides the application description of the current system

SAP Library contains all online help

Glossary helps you find the definition and interpretation of SAP system terms.

* Several modeling Models

Organizational Model: The organizational structure of an enterprise, including the business structure and human resources system structure.

Component Model: divides business processes in an enterprise into task components to describe specific tasks to be executed.

Data Model: Data Information During task execution

Interaction Model: What information needs to be exchanged between different organizations or components

* Transactions have at least two characteristics:

Transactions often need to include the design of interfaces and screen elements (such as menu buttons)

Transactions are often related to database update operations.

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