https://livesql.oracle.com is an excellent platform for beginners to practice SQL, especially if they want hands-on experience with Oracle Database. Pros: ✅ Free & Cloud-Based – No need to install Oracle Database locally. ✅ Official Oracle Environment – Uses an actual Oracle Database, ensuring compatibility. ✅ Pre-Loaded Sample Schemas – HR, SH, and other schemas for practicing real-world queries. ✅ Guided Tutorials – Includes step-by-step labs and tutorials for learning SQL and PL/SQL. ✅ Instant Execution – Run queries directly without setup hassles. Cons: ❌ Limited Customization – No full DBA access (e.g., cannot create new users, configure system settings). ❌ Session Timeouts – Sessions may expire after inactivity. ❌ Internet Dependency – Requires an active internet connection. Best Use Cases for Beginners: Learning basic SQL queries (SELECT, INSERT, UPDATE, DELETE). Practicing Joins, Subqueries, and Grouping. Understanding PL/SQL procedures, functions, and triggers. Runn...