IT 233: Business Information Systems
By the end of this introductory chapter, you will be able to:
Organizations are complex, and their information systems reflect that. Systems are tailored for different needs.
Think of systems as a pyramid, with each layer supporting the one above it.
🔑 The entire pyramid is built on the vast amount of data captured by Transaction Processing Systems (TPS) at the base.
We will explore three fundamental types of systems that form the backbone of modern organizations.
Transaction Processing Systems
The workhorses that capture daily business data.
Functional Area Information Systems
The specialists that serve specific departments.
Enterprise Resource Planning
The integrators that unite the entire organization.
Definition: Systems that monitor, collect, store, and process data generated from all routine business transactions.
Core Characteristics:
Example: A supermarket's Point-of-Sale (POS) system scanning barcodes, calculating totals, and processing a payment via Fonepay.
Definition: Systems designed to support the specific information needs of a single functional area or department.
When each department has its own system, data becomes trapped.
Imagine the Sales department's system can't see the real-time stock levels in the Warehouse department's system. A customer might order an item that is out of stock.
Consequences of Silos:
Definition: Integrated software systems that manage all core business processes using a single, unified database.
ERP systems break down the information silos by creating a central hub.
🎯 The Goal: To create a single source of truth for the entire organization, from finance to manufacturing to HR.
Next, we will take a deeper dive into the workhorses of the organization...