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ERP Enterprise Resource Planning, is a software driven business management system, which integrates all facets of the business, including Planning, Manufacturing, Sales and Marketing. ERP as a business solution aims to help the management by setting better business practices and equipping them with the right information to take timely decisions.
SAP The name SAP being a German company, is an acronym for “Systeme Anwendungen, Produkte in der Datenverarbeitung”. This is translated into English as: Systems Applications, and Products in Data Processing
SAP The third generation set of highly integrated software modules that perform common business functions based on multi-national leading practices. Takes care of any Enterprise however diverse it may be in operations, spread over the world geographically.
SAP R/2 R/2 is SAP AG mainframe solution and was first compact software package for the whole spectrum of business applications. SAP R/2 runs on mainframes, such as IBM, Siemens, Amdahl. The current version of R/2 is 6.1. This mainframe solution is not open, although with the help of ALE (Application Link Enabled) technology, R/2 can be linked to system and share online data. SAP AG is the company name AG stands for Aktiengesellschaft, which means in English “Incorporation”.
SAP R/3 SAP R/3 is SAP's integrated software solution for client/server and distributed open systems. SAP’s R/3 is the world’s most-used standard business software for client/server computing. R/3 meets the needs of a customer from the small companies to multi-billion dollar companies. The software is highly customizable using SAP’s proprietary programming language, ABAP/4.
R/2 Real Time Two Tier Architecture PRESENTATION LAYER APPLICATION LAYER DATABASE LAYER In R/2 we have got two layer concept: 1 st Layer 2 nd Layer
R/2 Real Time Two Tier Architecture Presentation Servers (Front Ends, Clients) Application Server / Database Server
R/3 Real Time Three Tier Architecture PRESENTATION LAYER APPLICATION LAYER DATABASE LAYER
R/3 Real Time Three Tier Architecture Presentation Servers (Front Ends, Clients) Application Server Database Server
Request come from Presentation Server To Database Server AS DISPATCHER D. Queue Buffer WP WP WP WP
All requests that come in from presentation server are directed first to the dispatcher. The dispatcher writes them first to the dispatcher queue. The dispatcher pulls the requests from the queue on a first-in, first-out basis. Each request is then allocated to the first available work process. A work process handles one process at a time.
ABAP/4 programs do not access operating system functions directly. Instead, they use Basis functions to perform file I/O. Basis is like an operating system for R/3. It sits between the ABAP/4 code and the computer's operating system. SAP likes to call it middleware because it sits in the middle. Basis provides runtime environment for ABAP/4 programs.
HUMAN RESOURCE HR module include support on Salary and Payroll administration as well as areas such as work schedule models. This core functional area is very country specific, due to country – related taxes, employee benefits, and employment laws.
Staffing of SAP Projects Strategic Thinking -- SAP may be part of a larger change project. Process Design -- Expertise in the design, change and documenting of business processes. Project Management -- Essential throughout the project lifecycle. Change Management -- Expertise is required in changing the organization. System Architect -- Overall responsibility for feasibility of the design and integration issues. Application Experts -- People with skill in configuring specific modules. Business Analyst -- Involved in piloting and must be trained. Trainers -- Training must be given to the users and team members new to SAP. SAP Developers -- People who can design and built bolt-on functionality. Operational Staff -- Responsible for administration, performance and transition.
Time Duration for Implementation Scoping -- 1-2 Months -- Decision Making. Understanding the Organization. Analysis -- 3-6 Months -- Documentation, Discussions. Design -- 2-3 Months -- Modules, Sub Modules, Interfaces, Databases, Data flow Servers, Terminals, and Back up. Development -- 2-3 Months -- Parallel with Design. ABAP/4, Configuration, Applications, Transactions, Reports. Configuration -- 3-4 Days -- Settings to be done. Implementation/ 3-4 Months Testing/Training Post Implementation Support (Continuous)