27-02-2013, 10:55 AM
Functional, Enterprise, and Inter-organizational Systems
Functional, Enterprise.ppt (Size: 216.5 KB / Downloads: 151)
Functional Information Systems
Characteristics:
Comprised of several small information system focused on specific activities
Specific IS applications can be
completely independent, or
integrated to form a coherent departmental functional system
also, can be integrated across departmental lines to support a broad business process (cross-departmental)
Interface with each other to form the organization wide information system
Interface with the environment
Transaction Processing Systems
What is a transaction?
Every business event that occurs during business operations
Business events (transactions) can trigger other business events
Each event (transaction) can be described by a number of data items
Transaction processing systems (TPS) are designed to record and store the data that describes every business event that occurs
TPS Today
Traditionally, TPS were implemented on mainframe systems using batch processing
Online Transaction Processing (OLTP)
can be built on a client/server architecture
can save money
Internet (Intranet) Transaction Processing
allows multimedia data transfer
fast response time
storage of large databases of graphics and videos
real time
low cost
Accounting and Finance Systems
Financial Planning and Budgeting
Financial and economic forecasting
Budgeting
Investment Management
Access to financial and economic reports
Financial analysis
Production & Operations Management Systems
Logistics and Material Management
Logistics Management
Ordering, purchasing, and inbound and outbound shipping
Inventory Management
Determine how much inventory to carry
Quality Control
Monitor and report quality of materials, work in process, and finished goods
Inter-organizational Information Systems (IOS)
Electronic systems involving information flow among two or more organizations in an on-going relationship
Objective – efficient transaction processing
Many large businesses require suppliers to be linked to them though IOS applications
IOSs may be implemented with
Private, third-party networks (value-added networks)
Publicly accessible networks (Internet)