logical model的用法和樣例：
例句
- The logical model for a relational database normalizes the entities and relationships into tables with foreign key constraints.
關(guān)系型數據庫的邏輯模型進(jìn)一步規范化這些實(shí)體和關(guān)系，并形成帶有主外鍵約束的表。 - How are general representational constructs used to encapsulate information about the elements defined in the logical model?
大會(huì )代表是如何構建用于封裝信息內容界定的邏輯模型？
