Princess Ruruna and Cain Have a Problem: Their Fruit-Selling Empire is a Tangle of Conflicting and Duplicated Data, and Sorting the Melons from the Apples and Strawberries is Causing Real Difficulties. But What Can They Do?" "Why, Build a Relational Database of Course, With the Help of Tico, the Magical Database Fairy. Follow Along in the Manga Guide to Databases as Tico Teaches Ruruna and Cain How to Build a Database to Manage Their Kingdom's Sales, Merchandise, and Exports. You'll Learn How Databases Work and the Meaning of Terms Like Schemas, Keys, Normalization, and Transactions.