chapter.checkpoint
Tables and First Queries
Pause here and make sure the main ideas feel clear before moving to the next chapter.
Review recommended
What you should understand now
Understand relational tables and retrieve exactly the rows and columns you need.
Relational tables
Understand rows, columns, keys, and relationships.
SELECT, WHERE, and ORDER BY
Retrieve and sort matching data.
INSERT, UPDATE, and DELETE
Change rows deliberately and safely.
progress.review
Chapter progress
Lessons completed
0/3
0% complete
Exercises attempted
0/3
0% complete
Quizzes passed
0/1
0% complete
Before you move on
Use this quick review if anything still feels unclear.
Review chapterRetake chapter quiz
Complete the lessons, pass the exercises, and pass the quiz to unlock the next chapter.