Which of the three object schemas would you generate from it? 你會(huì )從中生成上面三個(gè)對象模式中的哪一個(gè)？
The goal of the Data Access Object pattern is to provide a single point of contact to a particular data source. 數據訪(fǎng)問(wèn)對象模式的目的是提供到特定數據源的單個(gè)聯(lián)系點(diǎn)。
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