Initial commit

db/migrate/20230924015218_create_countries.rb

@@ -0,0 +1,15 @@
+class CreateCountries < ActiveRecord::Migration[7.0]
+  def change
+    create_table :countries do |t|
+      t.string :name, null: false
+      t.string :iso2, limit: 2, null: false
+      t.string :iso3, limit: 3, null: false
+
+      t.timestamps
+    end
+
+    add_index :countries, :name, unique: true
+    add_index :countries, :iso2, unique: true
+    add_index :countries, :iso3, unique: true
+  end
+end

db/migrate/20230924015422_create_people.rb

@@ -0,0 +1,9 @@
+class CreatePeople < ActiveRecord::Migration[7.0]
+  def change
+    create_table :people do |t|
+      t.string :name, null: false
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20230924015803_create_admissions.rb

@@ -0,0 +1,11 @@
+class CreateAdmissions < ActiveRecord::Migration[7.0]
+  def change
+    create_table :admissions do |t|
+      t.references :country, null: false, foreign_key: true
+      t.references :person, null: false, foreign_key: true
+      t.date :arrived_on, null: false
+
+      t.timestamps
+    end
+  end
+end