Here, I pick a database concept and delve into it in its entirety and try to explain all the nitty gritty and nuance. From performance to constraints, everything in between and more, my intention is to shed more light on important database concepts and explain them in a way that is accessible to all.
Imagine that at your local superstore(Walmart, Target, etc.), when you got to the parking lot, you had to get a number and wait till you got called to proceed into the store to do your shopping(however long that takes) and then leave, consequently freeing up space for the next person to come in. This sounds
Most data problems don’t come from bad SQL — they come from bad assumptions. And the worst one is believing that constraints can be “handled in the application.” They can’t. They never could. The moment data is touched by an ETL job, a script, an integration, a migration, or a future rewrite, every application‑level rule evaporates. The database is the only place where integrity actually persists. Datatypes, keys, foreign keys, checks, and assertions aren’t optional features — they’re the backbone of reliable systems. If the data matters, the constraints belong in the database. Full stop.
Background Story time When I just started working as a DBA, the Senior Database Administrator was taking me through the environment and how everything was set up, including all the servers, databases, applications, and more. He was talking about one of the purchased applications that runs in production, and then explained that the vendor had
Are you a database administrator grappling with performance issues? Don’t panic just yet! Discover essential strategies to troubleshoot and enhance your database performance. From identifying problematic SQL to understanding cardinality and execution plans, this guide offers practical insights drawn from real-world experience. Learn how to optimize your queries, leverage Oracle’s powerful tuning tools, and understand the critical role of database design in performance tuning. Whether you’re facing slow queries or just want to improve efficiency, this post is your roadmap to a faster, more responsive database. Dive in and transform your approach to performance tuning!
