logical database name

基本解释

A logical identifier must not be the same as the name of the physical database.
一個邏輯的標識不能與物理數據庫的名稱相同。
Ensure that the logical database name is selected (in this example, MAR), and then click Properties.
確保這個邏輯數據庫名稱已經被選中(在這個例子中是，MAR)，然後點擊 Properties。
Slice does not require such additional schema-level information because it maintains the association between a persistence instance and its original database partition via its logical name.
Slice 不需要這類額外的模式層的信息，因爲它根據持久性實例的邏輯名維護了實例和其原始數據庫分區間的關聯。