#postgresql #postgresdatabase #pgadmin #postgresinstallation #postgresqltutorial
---| MVCC concept And explanation |---
MVCC is a technique used by PostgreSQL to allow multiple users to access the database at the same time without interfering with each other. Instead of locking rows for every read or write, PostgreSQL uses row versions to manage concurrent access.
1. Snapshots for Consistent Reads
2. Tuple Versioning
3. Visibility Rules
4. No Dirty Reads / Isolation
5. VACUUM and Bloat Management
--| Top 3 Interview question |--
1. How does MVCC work in PostgreSQL, and how does it help with concurrency?
2. What happens when you update or delete a row in MVCC, and how is old data managed?
3. What problems can arise due to MVCC, and how do you deal with them?
