1. M0254 - ERP (Enterprise Resources Planning) M0254 - ERP (Enterprise Resources Planning) Session 7 - ERP Technology Ir. Ekananta Manalif, MM, MKom (D2664) Jurusan Sistem Informasi Universitas Bina Nusantara

2. M0254 Enterprise Resources Planning ©2004 Technology Review In the analysis of ERP systems there are a number of “technologies” that we will see … including A. Client Server Systems B. Networks C. Relational Databases and Data Warehouses D. Software E. Software Choice F. Reengineering and Best Practices

3. M0254 Enterprise Resources Planning ©2004 A. Client Server 1. What is Client Server? 2. What is the basic notion behind C-S? 3. What is “Three tiered Architecture”? 4. Why concern with C-S? ERP generally are built for CS

4. M0254 Enterprise Resources Planning ©2004 1. What is Client Server? Client Server is a computing model in which the application processing load is distributed between a client computer and a server computer, which share information over a network. Typically the client is a PC running front end software that knows how to communicate with the server (often a db server) Typically the server is a PC or workstation, but it can be a mainframe

5. M0254 Enterprise Resources Planning ©2004 2. What is the basic notion behind Client Server? Processing can be improved because client and server share processing loads. Client - server computing says that the client has computing power that is not being used Fundamental idea is to break apart an application into components that can run on different platforms. Thin vs. Fat Clients A thin client has most of the functionality with server A fat client has most of the functionality with the client.

6. M0254 Enterprise Resources Planning ©2004 3. What is a “Three Tiered Architecture”? Three Tiered Architecture is an information model with distinct pieces -- client, applications services and data sources -- that can be distributed across a network Client Tier -- The user component displays information, processes, graphics, communications, keyboard input and local applications

7. M0254 Enterprise Resources Planning ©2004 4. What is “Three Tiered Architecture”? Applications Service Tier -- A set of sharable multitasking components that interact with clients and the data tier. It provides the controlled view of the underlying data sources. Data Source Tier -- One or more sources of data such as mainframes, servers, databases, data warehouses, legacy applications etc.

8. M0254 Enterprise Resources Planning ©2004

9. B. Networks LANs, WANs, Intranets, Extranets Bandwidth Network Transmission Capability Standards TCP/IP Security E.g., Encryption

10. M0254 Enterprise Resources Planning ©2004 C. Databases and Data Warehouses Databases -- Numerous approaches including relational databases Relational DB is a set of related files that reference each other ERP are built on relational DBs and data source in three tier is typically relational Data warehouse is a DB for decision making, not transaction processing

11. M0254 Enterprise Resources Planning ©2004

14. D. Software ERP have been developed for different operating systems UNIX, Windows NT … Legacy Software Informally … software that has been in the company for a while. Generally, developed in house

15. M0254 Enterprise Resources Planning ©2004 In the same sense that personal computing software has moved toward a standard set of package options, corporate enterprise computing has also moved toward packages Package software is changing the nature of accounting, finance and IT departments No longer a matter of programming from scratch, instead need to understand processes Package Software

16. M0254 Enterprise Resources Planning ©2004 E. Software Choice Typically, use some form of cost benefit analysis Benefits – fuzzy Costs – easily seen “As Is” vs. “To Be”