関係 線形 備考 関連 (association) ＜────── 集約 (aggregation) ◇────── ｺﾝﾎﾟｼﾞｼｮﾝ (composition) ◆────── 依存 (dependency) ＜- - - - - - 汎化 (generalization) ◁────── 継承(extends , is a) 実現 (realization) ◁- - - - - - interface