Introduction
Enterprise Resource Planning (ERP) is a software system that helps businesses manage multiple operations using one integrated platform. Companies use ERP to handle tasks such as finance, inventory, production, sales, procurement, and human resources.
An ERP system combines several connected applications that work together. These applications share data through a centralized system, which allows businesses to manage operations more efficiently.
Regardless of the platform or company size, most ERP systems include three basic components.
Core Components of an ERP System
Data Input Facility (User Interface)
The data input facility is also known as the User Interface (UI) or Front End. This component allows users and stakeholders to enter data into the system.
For example, employees may enter information related to:
- Purchase orders
- Sales transactions
- Inventory updates
- Production data
The interface usually includes different input forms that make data entry simple and organized.
Data Storage Facility (Database)
The database is the back-end component of an ERP system. It stores all the data entered by users in a structured format.
This component plays a critical role because the system processes and analyzes data stored in the database.
Common databases used in ERP systems include:
- Oracle Database
- Microsoft SQL Server
- IBM DB2
- SAP HANA
These databases follow strict protocols to ensure fast data processing and secure storage.
Data Display Facility (Reporting Tools)
After data is entered and stored, businesses need tools to analyze and view that information. Reporting tools help users generate reports and dashboards that support decision-making.
Several Business Intelligence tools help display ERP data effectively. Popular examples include:
- SAP Crystal Reports
- Microsoft Power BI
- IBM Cognos
These tools convert raw data into meaningful reports that help managers monitor performance and plan future strategies.
What Type of Data Do ERP Systems Handle?
The type of data handled by ERP systems depends on the specific needs of the organization.
For small businesses, ERP systems may handle simple and limited data sets. However, medium and large organizations usually require more detailed information to support daily operations and decision-making.
In large enterprises, ERP systems often manage complex data across multiple departments or business divisions. As a result, these systems must maintain high accuracy and reliability.
Major ERP Segments
ERP solutions are generally designed for different industries. Therefore, they are commonly categorized into three main segments.
Manufacturing ERP
Manufacturing ERP systems focus on production-related activities. These systems help manufacturers manage raw materials, production planning, quality control, and finished goods inventory.
Although different systems may vary in cost and technology, most manufacturing ERP solutions support the essential requirements of production-based organizations.
Service Industry ERP
Service-based ERP systems support organizations that provide services instead of physical products.
Examples of industries using service ERP systems include:
- Hospitality
- Education
- Healthcare
- Telecommunications
Unlike manufacturing ERP systems, these solutions usually do not include production management features.
Retail ERP
Retail ERP systems support businesses involved in selling products directly to customers. The modern retail sector includes several business models, such as:
- Franchise stores
- Company-owned retail chains
- E-commerce platforms
- Hybrid retail models
In retail ERP systems, businesses focus mainly on procurement, inventory control, and distribution management. Effective distribution management helps companies prevent inventory leakage and improve supply chain efficiency.
Types of ERP System Architecture
ERP systems generally follow two main architectural models:
- Conventional Client Server / Two Tier Application
- Client server architecture with Three Tier application
What is Two Tier Application?
In a two-tier system, the application contains two main layers:
- Front End (User Interface)
- Back End (Database)
In this model, both the user interface and business logic operate in the same layer, while the database stores all application data.
This structure is simple and cost-effective. However, it becomes difficult to maintain when organizations change operating systems or platforms because developers may need to rewrite large portions of the application.
What is Three Tier Application?
Three-tier architecture separates the system into three independent layers:
- User Interface Layer
- Application Layer (Business Logic)
- Database Layer
User Interface Layer
This layer manages the design and user interaction. It collects user input and sends requests to the application layer.
Because this layer mainly handles presentation, organizations can update it easily when platforms change.
Application Layer
The application layer contains all business logic and operational rules. It processes user requests and performs required calculations.
When necessary, this layer communicates with the database layer to retrieve or store information.
Because the logic is organized into APIs or modules, the system becomes more flexible and scalable.
Database Layer
The database layer stores and manages all application data. It usually operates on a separate server, which improves security and performance.
This layer responds to queries sent by the application layer and returns the required data for processing.
ERP Infrastructure Deployment Models
Organizations can deploy ERP systems using three main infrastructure models.
On-Premises ERP
In this model, the organization installs servers and databases within its own physical infrastructure.
Although this approach requires high initial investment for hardware, networking, and maintenance, it offers greater control and flexibility.
Companies with strict security requirements often choose this deployment model.
Private Cloud ERP
In a private cloud environment, ERP databases operate on dedicated cloud servers. Only authorized users can access the system through secure connections.
This approach provides strong security while reducing some infrastructure management responsibilities.
However, organizations still need technical expertise to manage the environment.
Public Cloud ERP
Public cloud ERP systems operate on shared cloud platforms provided by major technology companies such as:
- Amazon Web Services (AWS)
- Microsoft Azure
- Google Cloud
- IBM Cloud
In this model, organizations do not need to invest in hardware or infrastructure. Instead, they pay a subscription fee based on system usage, number of users, or storage consumption.
As a result, many businesses choose cloud ERP systems because they reduce initial investment and provide greater flexibility.