對關聯式資料庫之敘述，下列何者不正確？(A)表格（Table)是構成資料庫的基本單位(B)每一表格至少應有一個主鍵(C)主鍵之鍵值應唯一（Unique)，不能重複(D)表格索引可加快查詢速度，所

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29.對關聯式資料庫之敘述，下列何者不正確？
(A)表格（Table)是構成資料庫的基本單位
(B)每一表格至少應有一個主鍵
(C)主鍵之鍵值應唯一（Unique)，不能重複
(D)表格索引可加快查詢速度，所以索引越多越好

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