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Part 4 of this project

Data Layer

Open JDBC SQLite and create a sample schema

Goal for this part

Open JDBC SQLite and create a sample schema.

Treat 04-Data-Layer as the source of truth for this checkpoint. If your local tree drifted, re-clone that folder rather than mixing files from neighbors.

What you should already know

You do not need prior JavaFX experience for part 1. Later parts assume you finished the earlier snapshots on the same machine.

  • JDK 17+ and Maven are installed
  • You can run mvn from a terminal
  • You have a desktop session for the GUI window

Why JavaFX fits Tableforge

A teaching DBMS is a SQL workbench: connections, result grids, and scripts. JavaFX TableView plus JDBC keeps each piece visible.

Split the stage into schema tree, SQL editor, and results. Prepared statements belong in the data layer—not glued to button handlers forever.

Checkpoint

After you run the snapshot, you should recognize the behavior described in the goal—before you move on. If the window (or server) never appears, stop and fix the run steps.

Code shape

Snapshots stay small on purpose. Look for this kind of core call as you read the folder:

st.executeQuery("SELECT name FROM sqlite_master WHERE type='table'");

How to run it

Clone the teaching repo, open 04-Data-Layer, install what the README asks for, then run mvn javafx:run.

git clone https://github.com/michaeldunga1/fcc-javafx-dbms.git
cd fcc-javafx-dbms/04-Data-Layer
mvn -q -DskipTests package
mvn javafx:run

Common mistakes

  • Ignoring platform-specific install notes in the snapshot README
  • Creating tables twice with conflicting schemas
  • Forgetting to commit/close the database connection in long sessions
  • Looking for seed data in part 3 before the data layer exists

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