Topic 12
Topic 12
Ruby source files are converted directly from the English source tree.
Overview
Why this topic matters 💡
Small applications often need real persistence before they need a full framework. SQLite is a strong teaching tool because students can practice schema creation, inserts, updates, simple queries, and prepared statements without setting up a database server.
Learning outcomes 🎯
By the end of this topic, students should be able to:
Assessment focus ✅
Students should be able to explain why schema setup, querying, and parameter binding are different concerns even in a small project.
Short Note
SQLite is useful in teaching because it introduces real persistence with very low ceremony. The important lesson is not "Ruby can run SQL." The lesson is that data storage becomes cleaner when responsibilities are separated:
Ruby beauty in this topic:
Ruby caution in this topic:
Reflection prompt:
Worked Examples
Example 1: Local catalog or admin tool 💡
A small admin or desktop-style tool often needs persistence but does not need a full database server. SQLite is a realistic choice for:
That makes it a better teaching example than abstract SQL snippets without context.
Example 2: Query service with parameter binding 💡
Applications regularly ask focused questions such as:
Prepared statements are useful because: