Course/Module 6/Topic 3 of 3Intermediate

Data Manipulation (INSERT, UPDATE, DELETE) - Practice

Put your data manipulation (insert, update, delete) skills to the test with practical exercises and challenges.

50 min•By Priygop Team•Last updated: Feb 2026

Hands-On Practice

Practice makes perfect! In this section, you'll work through practical exercises that reinforce the concepts covered in this module.

Exercises

Exercise 1: Apply basic data manipulation (insert, update, delete) concepts
Exercise 2: Solve intermediate-level challenges
Exercise 3: Build a mini-project using data manipulation (insert, update, delete)
Exercise 4: Debug and fix common issues

Practice: Data Manipulation (INSERT, UPDATE, DELETE)

Practice: Data Manipulation (INSERT, UPDATE, DELETE)JavaScript⚠ 1 error

⚠ Syntax Issues (1)

Line 1: JS Error: Unexpected identifier 'DML'

💡 Check syntax near the highlighted line.

JavaScript Editor

✕ 1 errorTab = 2 spaces

-- Practice DML operations
INSERT INTO students (name, email, grade)
VALUES ('John Doe', 'john@school.com', 'A');

UPDATE students
SET grade = 'A+'
WHERE name = 'John Doe';

-- Safe delete with SELECT first
SELECT * FROM students
WHERE enrollment_date < '2020-01-01';
-- Then: DELETE FROM students WHERE enrollment_date < '2020-01-01';

Result

Click ▶ Run to see the result

Edit the code on the left, then click Run

JavaScript|12 lines|335 chars|1 error, 0 warnings

UTF-8

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