candidate superkeys
候選超鍵
composite superkeys
複合超鍵
primary superkeys
主要超鍵
identifying superkeys
識別超鍵
defining superkeys
定義超鍵
valid superkeys
有效超鍵
minimal superkeys
極小超鍵
unique superkeys
唯一超鍵
several superkeys
幾個超鍵
two superkeys
兩個超鍵
the database administrator generated several superkeys for the new table.
資料庫管理員為新表生成了幾個超鍵。
a superkey can contain redundant attributes that are not necessary for unique identification.
超鍵可以包含用於唯一識別的非必要冗餘屬性。
we need to identify the minimal superkey, which is the candidate key.
我們需要識別出最小的超鍵，也就是候選鍵。
the superkey consisting of all columns guarantees uniqueness.
由所有欄位組成的超鍵可確保唯一性。
each superkey must include the primary key as a subset.
每個超鍵必須包含主鍵作為其子集。
the system automatically validates superkeys for uniqueness constraints.
系統會自動驗證超鍵以符合唯一性限制。
superkeys are essential for maintaining data integrity in relational databases.
超鍵對於維護關係資料庫中的資料完整性至關重要。
the analyst examined all possible superkeys in the normalization process.
分析師在正規化過程中檢查了所有可能的超鍵。
removing unnecessary attributes from a superkey produces a candidate key.
從超鍵中移除不必要的屬性會產生一個候選鍵。
the foreign key references a superkey in the parent table.
外鍵引用了父表中的超鍵。
understanding superkeys is fundamental to database design theory.
理解超鍵是資料庫設計理論的基礎。
the relation has three distinct superkeys that satisfy the uniqueness requirement.
這個關係有三個符合唯一性要求的獨立超鍵。
candidate superkeys
候選超鍵
composite superkeys
複合超鍵
primary superkeys
主要超鍵
identifying superkeys
識別超鍵
defining superkeys
定義超鍵
valid superkeys
有效超鍵
minimal superkeys
極小超鍵
unique superkeys
唯一超鍵
several superkeys
幾個超鍵
two superkeys
兩個超鍵
the database administrator generated several superkeys for the new table.
資料庫管理員為新表生成了幾個超鍵。
a superkey can contain redundant attributes that are not necessary for unique identification.
超鍵可以包含用於唯一識別的非必要冗餘屬性。
we need to identify the minimal superkey, which is the candidate key.
我們需要識別出最小的超鍵，也就是候選鍵。
the superkey consisting of all columns guarantees uniqueness.
由所有欄位組成的超鍵可確保唯一性。
each superkey must include the primary key as a subset.
每個超鍵必須包含主鍵作為其子集。
the system automatically validates superkeys for uniqueness constraints.
系統會自動驗證超鍵以符合唯一性限制。
superkeys are essential for maintaining data integrity in relational databases.
超鍵對於維護關係資料庫中的資料完整性至關重要。
the analyst examined all possible superkeys in the normalization process.
分析師在正規化過程中檢查了所有可能的超鍵。
removing unnecessary attributes from a superkey produces a candidate key.
從超鍵中移除不必要的屬性會產生一個候選鍵。
the foreign key references a superkey in the parent table.
外鍵引用了父表中的超鍵。
understanding superkeys is fundamental to database design theory.
理解超鍵是資料庫設計理論的基礎。
the relation has three distinct superkeys that satisfy the uniqueness requirement.
這個關係有三個符合唯一性要求的獨立超鍵。
探索常見搜尋詞彙