Database & Data Modeling

What this module covers

5 steps · Next.js

1. Step 1. Lesson: Database & Data Modeling

   Design server-side data access, schemas, migrations, transactions, pagination, and clear repository boundaries. Learning objectives - Recognize when database & data modeling is the right tool. - Explain the role of server, database, transaction. - Build a small working example before combining it with a larger interface. - Identify one accessibility, maintainability, or error-handling improvement. Read the example, predict what it will do, then complete the small change described in the check question.

   Design server-side data access, schemas, migrations, transactions, pagination, and clear repository boundaries. In Next.js, make the state/interaction visible in the UI so completion is easy to verify.

   Check yourself: [Next.js] Use the example to demonstrate database & data modeling.

2. Step 2. Quiz: Database & Data Modeling

   Check your understanding of Database & Data Modeling.

   Database credentials must remain in server-only execution paths. In Next.js, make the state/interaction visible in the UI so completion is easy to verify.

   Check yourself: [Next.js] Complete the knowledge check.

3. Step 3. Exercise: Database & Data Modeling

   Model users, projects, and memberships, then implement paginated server-side reads and a validated write.

   This exercise turns the Database & Data Modeling lesson into a working code change. In Next.js, make the state/interaction visible in the UI so completion is easy to verify.

   Check yourself: [Next.js] Does the solution use server and database and transaction?

4. Step 4. Review lab: Explain & improve Database & Data Modeling

   Rebuild the exercise without copying the solution. Then improve it in two ways: make the code easier to understand and add one useful edge case, responsive behavior, accessibility improvement, or error state. Finally, write a short explanation of how server, database, transaction work together.

   Rebuilding from memory and improving an edge case turns recognition into durable skill. In Next.js, make the state/interaction visible in the UI so completion is easy to verify.

   Check yourself: [Next.js] Does the improved version still use server, database, transaction clearly?

5. Step 5. Mini project: Database & Data Modeling

   Build a database-backed project dashboard with migrations, relational data, pagination, and transaction-safe mutations.

   The mini project combines the module lesson, quiz, and exercise into one portfolio-ready result. In Next.js, make the state/interaction visible in the UI so completion is easy to verify.

   Check yourself: [Next.js] Does the project apply the module's database & data modeling skills?