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Database

Beginner to Advanced

SQL, Indexes, Transactions

6Lessons·5Chapters
0/6
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SQL BasicsTransaction IndexNoSQLAdvanced
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1 lessons
DatabaseContinue
30 minRead
01 SQL Basics
2 lessons
SQL Essentials — RDBMS · SELECT · WHERE · GROUP BY · JOIN
60 minRead
SQL Practice — Create Tables, Insert Data, and Query
1 hrRead
02 Transaction Index
1 lessons
Transactions + Indexes — ACID, Isolation Levels, MVCC, B+Tree
60 minRead
03 NoSQL
1 lessons
NoSQL Basics — When to Use Redis and MongoDB
45 minRead
99 Advanced
1 lessons
DB Advanced — Replication, Sharding, Cache, Connection Pool, Partitioning
45 minRead

Database Learning FAQ

Can I learn Database for free?

Yes. All CodeMaster Database lessons are completely free, with no ads. Sign up to access the full content.

Can beginners follow the Database course?

Yes. Every lesson follows concept → code example → interactive demo → quiz, so you can follow along with no prior knowledge.

How long does it take to learn Database?

Each lesson is about 30-60 minutes on average. At 1-2 lessons a day, you can finish the whole category in about 1-2 months.

Can the AI mock interview be based on Database too?

Yes. CodeMaster's 4-turn AI mock interview covers algorithms, system design, CS knowledge, and vector DBs, and gives feedback on real interview questions including Database.

Free Database course — 6 lessons | CodeMaster