Enums¶ enum Cardinality → string¶ Relationship cardinality case exactlyOne → '||'¶ case oneOrMore → '}|'¶ case zeroOrMore → '}o'¶ case zeroOrOne → '|o'¶ enum Key → string¶ Key type case foreignKey → 'FK'¶ case primaryKey → 'PK'¶ case uniqueKey → 'UK'¶ enum RelationshipType → string¶ Relationship type case identifying → '--'¶ case nonIdentifying → '..'¶