DBMS PrepTrek with JobNetWork

A practical DBMS revision PDF built from how interviews actually go: one idea per card, with a picture, a quick try-it and the mistake to avoid. No long chapters to read.

What's inside (27-page PDF)

- 31 concept cards: keys, ER model, normalization (1NF to BCNF), ACID, transactions, isolation levels, deadlocks, indexing, joins, views, triggers, NULL handling and more

- Every card has: a one-line answer to say first, a picture, a try-it question with the answer, the common trap, and a sentence you can say word for word

- 8 SQL interview queries with answers (second highest salary, duplicates, self join, top earner per department and more). I ran each one on sample data to check it

- 20 rapid-fire one-line answers for the night before

- A night-before checklist

Who it's for

Students and freshers preparing for campus placements or their first tech interview, who want to understand DBMS quickly instead of reading a textbook.

Want to try before you buy? The first 10 cards are free: job-net-work.vercel.app/prep-trek/dbms