PostgreSQL & Database Design
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About this course
PostgreSQL & Database Design teaches how to design and run a real database, not just query one. It starts from an online store's orders table and shows where bad design breaks, through duplicated customer details and multi-valued columns. It then covers data modelling, keys and relationships, normalization and deliberate denormalization, constraints, indexes and EXPLAIN, transactions and MVCC, JSONB, views and functions, schema migrations, performance and security. The course has 167 lessons and about 1252 minutes of content. Each lesson is a short reading card with narration and diagrams, followed by MCQ practice with an explanation for every answer.
Who this PostgreSQL course is for
Backend developers, data engineers and analysts who already write basic SELECT queries and now need to design tables that hold up in production will get the most from this course. It suits freshers preparing for backend interviews, where schema design and indexing questions are common. The course does not re-teach SQL basics, so if joins and GROUP BY feel shaky, practise with SQL interview mastery first. For theory such as ACID and normal forms in interview format, DBMS interview mastery is a good companion.
How MCQ practice works on Abekus
Each lesson is a short reading card with narration and diagrams, such as a picture of a many-to-many junction table between orders and products, or a view of how MVCC keeps old and new row versions side by side. After the card, you answer MCQ practice items one at a time. Every answer comes with an explanation, so a wrong choice shows you why the correct option works. The course runs guided or self-paced, so you can follow the curriculum in order or move at your own pace. It is free with Abekus Pro, and otherwise it is paid in credits.
MCQ practice vs video courses for PostgreSQL
Udemy and Coursera host long video courses on PostgreSQL and SQL, often built around typing queries into one sample database. That format suits learners who want to follow a full demo. This course asks the design questions that come up in real work: which column order a composite index needs, whether a value belongs in JSONB or its own table, which isolation level stops a double booking, or how to add a column without locking a busy table. MCQ practice in short sessions suits learners who want to build those decisions into habit.
Best way to learn database design
Design a small schema of your own alongside the course, such as a booking or college fees system, and change it after each topic. Answer each MCQ before reading its explanation, then run the same idea on a local PostgreSQL install: read an EXPLAIN plan, try SELECT FOR UPDATE in two sessions, or add a partial index. Revisit Isolation Levels and Index Design after a few days, since both are easy to misremember and both come up often in backend interviews.