お買い物モデル練習用v1

練習用第1形態です！リレーションカラムも削除してます。エラーを修正してみましょうｗ

Industry: n/a

Function:

Owner Portfolio

再生リスト https://youtube.com/playlist?list=PLJVURwfBnTWkNolZdAthmWZi6hEk9a-Ls

[This section usually shows the "Design Details" of the app, as defined in the Properties section of the app definition]

This is a preview of the data sets used in the app.

This is a high-level model of both the data entities and the UI elements in the app.