define tables for value types and value

database/main.go

@@ -50,7 +50,7 @@ func Init() {
 
 	if os.Getenv("OUTPUT_DATABASE_EXECUTE_MIGRATIONS") != "false" {
 		log.Log.Info("Executing database migrations")
-		Db.AutoMigrate(&tables.Instance{})
+		Db.AutoMigrate(&tables.Instance{}, &tables.ValueType{}, &tables.Value{})
 	}
 }
 

database/tables/valueTypes.go

+package tables
+
+type ValueType struct {
+	ID          uint `gorm:"primaryKey"`
+	Name        string
+	Description string
+}

database/tables/values.go

+package tables
+
+import "time"
+
+type Value struct {
+	ID          uint `gorm:"primaryKey"`
+	Date        time.Time
+	InstanceID  int
+	Instance    Instance
+	ValueTypeID int
+	ValueType   ValueType
+	Value       string
+}