Build a real business application
Build a secure quotation application that manages customers, multiple items, discounts, tax, totals and professional printed documents.
This is Workbook 03 in the Prompt to Profit™ Software Workbook Series. It is a complete standalone learning project. You can begin here without owning or completing another workbook in the series.
Who this workbook is for
- Complete beginners who want to build useful software with AI
- Small business owners who want to understand how custom business applications are created
- Students and career changers building practical portfolio projects
- People who prefer clear, guided projects instead of disconnected coding exercises
- Learners using Notepad and a browser rather than a professional development environment
What you will build
- Build a responsive quotation software website and dashboard
- Create a complete authenticated user journey
- Design secure quotations and quotation_items tables
- Add and remove several quotation items
- Calculate subtotals automatically
- Apply percentage or fixed discounts and tax
- Save, view, search, filter, sort and edit quotations
- Print professional quotation documents
- Confirm and securely delete quotations
- Test ownership protection using two separate accounts
What you will learn
- Model a parent business record with multiple related items
- Build reliable financial calculations
- Protect quotation data with Row Level Security
- Create screen and A4 print experiences
- Complete a practical business-software portfolio project
Your chapter-by-chapter path
- Building the Public Website
- Connecting to Supabase
- Building the Complete Authentication System
- Building the Quotation Database
- Building the Quotation Dashboard
- Viewing Quotations
- Searching, Filtering and Sorting Quotations
- Editing Quotations
- Printing and Deleting Quotations
- Final Testing and Project Completion
Tools used in the workbook
- HTML for page structure
- CSS for layout, colours and responsive design
- Vanilla JavaScript for application behaviour
- Supabase for authentication, database storage and security
- ChatGPT as your AI software development partner
- Notepad for creating and updating complete files
- A modern browser for testing
You do not need VS Code, Node.js, React or a JavaScript framework.
Designed for careful beginner progress
Every lesson explains what you are building, why it matters, what to prepare, the complete Build Prompt, what AI should return, how to save the files and how to test the completed capability.
The workbook also includes checkpoints, common beginner mistakes, behind-the-scenes explanations, software-design questions and a clear summary of what you learned.
Security is part of the project
You will not build a demonstration that exposes every user's records. The workbook teaches authenticated ownership checks, Supabase Row Level Security and two-account privacy testing so you can verify that one user cannot access another user's information.
Learner support included
- A visual glossary of recurring terms
- Backup instructions before replacing complete files
- A troubleshooting checklist
- A reusable error log
- Code-reading questions after major capabilities
- Final testing and live deployment guidance
- Portfolio description, reflection questions and extension challenges
Workbook details
- Format: Protected digital PDF
- Length: 300 pages
- Difficulty: Beginner
- Estimated completion time: 25–30 hours
- Series: Prompt to Profit™ Software Workbook Series
- Produced by: Tochukwu Tech and AI Academy
Work at your own pace
The estimated time is a guide, not a deadline. Complete the lessons in order, test every important capability and stop to correct problems before moving forward. By the end, you will have both a working application and a clearer understanding of how complete software is planned, built, secured, tested and published.