All notes, in reading order

Reducing Unused CSS in Production

The View Transitions API Explained

CSS Anchor Positioning Overview

The @property Rule for Typed Custom Properties

Introduction to Cascade Layers with @layer

Managing Specificity with Cascade Layers

The @scope Rule Explained

What is SQL: Databases, DBMS and RDBMS

SQL is the declarative language used to define and query relational data. Start here to see what a database, a DBMS and an RDBMS actually are.

The Relational Model: Tables, Rows, Columns and Schemas

Tables hold typed columns and unordered rows, schemas hold tables, and every value obeys the type its column declares.

SQL Syntax, Keywords, Identifiers and Comments

How a SQL statement is built: clause order, keywords versus identifiers, quoting rules, statement terminators and the two comment styles.

SQL Data Types Explained

Numeric, string, date and boolean types across the major dialects, and how to pick the type that stops bad data at the door.

SQL Operators and Expressions

Arithmetic, comparison, logical, string and set operators, how precedence works, and where an expression may legally appear.