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Chapter 15/End of Chapter/part2app/age.sql

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+DROP TABLE IF EXISTS Results;
+DROP TABLE IF EXISTS Calculations;
+DROP TABLE IF EXISTS People;
+
+CREATE TABLE IF NOT EXISTS `Calculations` (
+    id INTEGER PRIMARY KEY AUTOINCREMENT, `age` INTEGER, 
+    years INTEGER, `nextage` INTEGER);
+
+CREATE TABLE IF NOT EXISTS `People` (
+    id INTEGER PRIMARY KEY AUTOINCREMENT, 
+    name VARCHAR(255));
+
+CREATE TABLE IF NOT EXISTS `Results` (
+    id INTEGER PRIMARY KEY AUTOINCREMENT, 
+    calculationId INTEGER REFERENCES `Calculations` (`id`) 
+        ON DELETE CASCADE ON UPDATE CASCADE, 
+    personId INTEGER REFERENCES `People` (`id`) 
+        ON DELETE CASCADE ON UPDATE CASCADE);
+
+INSERT INTO Calculations (id, age, years, nextage) VALUES
+    (1, 35, 5, 40), (2, 35, 10, 45);
+
+INSERT INTO People (id, name) VALUES
+    (1, 'Alice'), (2, "Bob");
+    
+INSERT INTO Results (calculationId, personId) VALUES
+    (1, 1), (2, 2), (2, 1);