This article provides a brief introduction to databases, explaining their purpose, the different types available, and the most popular currently in use. It also briefly describes the SQL query language, its primary functions, and how it differs from other programming languages.
ReadA comprehensive introduction to PostgreSQL, covering installation on Ubuntu, Windows, and MacOS. The article also demonstrates basic SQL operations, bulk loading data from CSV files, and provides an interactive Python script for database querying.
ReadThis article explains the Read operation in CRUD, focusing on retrieving data from relational databases using SQL SELECT. It covers basic queries, many ANSI SQL keywords, and PostgreSQL-specific features like DISTINCT ON and RETURNING.
ReadThis article explains how to use the WHERE clause in SQL to filter data based on specific conditions. It covers basic syntax, comparison operators, pattern matching with LIKE, and logical operators like AND and OR.
ReadLearn about the fundamental One-to-Many (1:N) relationship in database design. This article covers normalization, Foreign Keys, Crow's Foot notation, and implementation in PostgreSQL and Tableau.
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