【单选题】【消耗次数：1】
下面不属于数据库体系结构中三级模式的是（ ）。
①
存储模式
②
逻辑模式
③
数据模式
④
应用模式
参考答案：
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相关题目
【简答题】
数据库体系结构按照模式、[填空]和内模式三级结构进行组织。
【简答题】
数据库系统的三级模式结构是指数据库系统是由[填空1]、内模式和外模式 三级构成。
随机题目
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often
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routine
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quiet
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praised
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comfortable
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②
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③
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④
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farther
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far
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