四、假設現有如下個人實聯制登記紀錄的關連式資料庫,請使用SQL 回答相關的子問題。
Place(
placeID, placeName, countyCity, district, address)PK:placeID
Person(mobile, name, telecomProvider)PK:(mobile)
EnterRecord(placeID, mobile, date, time)
PK:(placeID, mobile, date, time)
FK:placeID ref. Place(placeID)
FK:mobile ref. Person(mobile)