Architecture & Thinking

Nov 4, 2021 · Databases

Master MySQL: From DDL Basics to Advanced Table Constraints

This guide walks through SQL’s language categories—DDL, DML, DQL, DCL, and TCL—then demonstrates practical database and table management commands such as creating and dropping databases, defining tables with various constraints (not‑null, default, primary/foreign keys, unique, auto‑increment), and modifying or copying fields and tables.