#relational-database articles

DBDevisri Bandarudevisri-b.hashnode.devMay 24 · 24 min read

A Practical Guide to T-SQL

If you've ever worked with Microsoft SQL Server, Azure SQL Database, or Microsoft Fabric, you've already encountered T-SQL , whether you realized it or not. T-SQL (Transact-SQL) is Microsoft's powerfu

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PMPrajwal Mglitch-guy0.hashnode.devApr 25 · 4 min read

Foreign Keys, Views, and the Real Problem: Database Boundaries

Why this blog exists This blog is not theory — it’s a reflection of how my understanding evolved while dealing with a real system. I started with frustration: Foreign keys made migrations painful Vie

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KNKanchan Nathkanchannath.hashnode.devMar 6 · 8 min read

How to Identify Database Relationships Before Writing a Single Line of Code

I've seen juniors jump straight into writing schema code without stopping to think about how their collections relate to each other. Then halfway through the project, they realize their data model is

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DGDeepansh Gangwarblog-deepansh.hashnode.devFeb 28 · 3 min read

PostgreSQL Complete Beginner → Developer Cheatsheet (In-Depth)

Windows: Start & Stop PostgreSQL Service When PostgreSQL is installed on Windows, it runs as a background service. Run Command Prompt as Administrator. net start postgresql-x64-18 Stop PostgreSQL net

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AFAira Francodataengineeringlearning.hashnode.devJan 26 · 6 min read

SQL Project: Data Analysis with DuckDB

Project Summary This project explores the Sakila DVD rental database using SQL, DuckDB, Python, and Evidence. The goal is to understand the data and find patterns in movies, customers, and revenue. The data is loaded from a SQLite database into DuckD...

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KBKasturi Borhadedatabase-sql-dbms.hashnode.devJan 24 · 4 min read

Mastering the Basics of Relational Databases: From Logic to Layout

If you’ve ever wondered how massive companies like Amazon or Netflix keep track of millions of customers and orders without losing their minds, the answer is the Relational Data Model. It sounds technical, but it’s actually a very logical way of orga...

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TSTudor Stanilatrdb.hashnode.devJan 19 · 6 min read

insertion in heap pages

Originally published on tudor96stani.com Intro Insertion in heap pages is, in theory, straightforward: you find some free space in the page, place the row there and create a slot pointing to that location. There are, however, multiple small details t...

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ZIZubair Idris Awedafreecodecamp.orgJan 14 · 12 min read

How Relational Database Constraints Work and Why They're Important

Databases are a crucial tool because they store the data that power our day-to-day lives. Databases are designed to match the real world as much as possible, so they store data of different forms, about different things, just as it is in the world. T...

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LDLuis de Pabloengineeringwithoutdogma.hashnode.devJan 12 · 5 min read

Betting Against Evolvability: MongoDB, Joins, and Architectural Commitments

Systems don’t stay where they started In Designing Data-Intensive Applications, Martin Kleppmann uses the term evolvability in a very practical way: real systems tend to not stay where they started.You design a service with one set of assumptions lik...

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JMJuan Miguel Nietothe-dev-cureef-core-and-sql.hashnode.devJan 12 · 2 min read

Book Review of Database in Depth by C.J Date

This book is not a book for beginners. A good exposure to different SQL products will help you learn what concepts run on the database products that you use. Although the book doesn’t reference specific products, it focuses on relational model concep...

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