Recap and Feedback

In this part, you moved from single-table SQL to relational queries across several related tables. You looked at why data is distributed across tables, how relationship paths are read from a schema, and how joins, subqueries, and set operations help reconstruct useful answers.

You also revisited those same queries through a small set of relational-algebra operators, which made it easier to talk about query structure and about when two query shapes describe the same result.

In the applied chapters of this part, the study tracker moved beyond one-table pages as well. By the end of the part, the project can show cards inside decks and tags on cards, so both one-to-many and many-to-many relationships are now visible in the application itself. Those two chapters together play the role of the project checkpoint for this part.

Recap Quiz

The recap quiz below is a short sequence of questions drawn from the main ideas of this part. Complete it before the feedback form.

Feedback

Next, please take a moment to reflect on your work in this part and provide feedback. Your input helps us improve the course materials.