Component Diagram Examples — 25+ Free UML Component Diagrams for BSIT Capstones (2026)

itsourcecode.com hosts 25+ free Component Diagram examples for BSIT capstone projects (2026) — complete UML component diagrams showing system architecture, software components, and their interfaces for the most common capstone domains. Capstone-ready for Chapter 3 documentation.

What is a Component Diagram?

A Component Diagram is a UML structural diagram that shows how a system is divided into components — the high-level building blocks of your software architecture. Components communicate via interfaces (the “lollipop” notation: provided interface = circle, required interface = half-circle). Components can be: Business Logic (Order Processor, Authentication Module), UI (Login Page, Dashboard), Data Access (Database Connector, File Handler), or External Services (Payment Gateway, SMS API). Component diagrams answer “what are the major pieces of my system and how do they connect?”

When to use a Component Diagram in capstone

• Your system has 5+ major modules that need clear separation
• You are using a layered architecture (UI / Business Logic / Data Access)
• You integrate with external services (Payment, SMS, Cloud Storage)
• Your panel asks “what is your system architecture?” — Component diagram answers it

Featured Component diagrams by system domain

🎓 School, Student & Library

• Student Registration Component
• School Management Component
• College Management Component
• Library Management Component
• Attendance Management Component
• Online Examination Component
• Course Registration Component

🏥 Hospital & Blood Bank

• Hospital Management Component
• Blood Bank Management Component

🍽️ Hotel, Restaurant & Event

• Hotel Management Component
• Hotel Reservation Component
• Online Food Ordering Component
• Restaurant Management Component
• Event Management Component

🛒 E-commerce, Shop & Inventory

• E-commerce Website Component
• Online Shopping Cart Component
• Online Shopping System Component
• Point of Sale Component
• Inventory Management Component

🏦 ATM, Banking & Payroll

• ATM System Component
• Bank Management Component
• Credit Card Processing Component
• Payroll System Component
• Employee Management Component

🚗 Transport, Travel & Reservation

• Railway Reservation Component
• Airline Reservation Component
• Car Rental Component

🔐 Authentication & AI

• Login System Component
• Face Recognition System Component

About this Component diagram collection

Curated since 2015 by PIES Information Technology Solutions, Binalbagan, Negros Occidental, Philippines. Used by 12,000+ BSIT students monthly. Pair each Component diagram with the matching Deployment Diagram for full system architecture documentation in Chapter 3.

Related UML diagram collections

• UML Diagrams Library — parent collection, 300+ diagrams
• Deployment Diagrams — 25+ deployment topology diagrams (paired with Components)
• ER Diagrams — 35+ ERDs
• Data Flow Diagrams — 40+ DFDs
• Use Case Diagrams — 40+ Use Cases
• Class Diagrams — 30+ Class diagrams
• Sequence Diagrams
• Activity Diagrams
• Final Year Projects