CREATE TABLE "User" (
	"id" int,
	"username" varchar(255),
	"salt" varchar(255),
	"password_digest" varchar(255),
	"is_enabled" bool
);
CREATE TABLE "Role" (
	"id" int PRIMARY KEY,
	"authority" varchar(255)
);
CREATE TABLE "Assignment" (
	"user_id" int CONSTRAINT User_id REFERENCES User(id),
	"role_id" int CONSTRAINT Role_id REFERENCES Role(id)
);