成考院校在线答案
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">11、<span style="font-size:14.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">在数据库操作过程中，事务处理是一个操作序列，必须具有以下性质：原子性、一致性、隔离性和</span><span lang="EN-US" style="font-size:14.0pt">___</span><span style="font-size:14.0pt; font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">4、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">与</span><span lang="EN-US">Where G BETWEEN 60 AND 100</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">语句等价于</span><span lang="EN-US">___</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">27、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";color:windowtext">从</span><span lang="EN-US" style="color:windowtext">E-R</span><span style="font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; color:windowtext">模型关系向关系模型转换时，一个</span><span lang="EN-US" style="color:windowtext">M:N</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";color:windowtext">联系转换为关系模式时，该关系模式的主键是</span><span lang="EN-US" style="color:windowtext">___</span><span style="font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; color:windowtext">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; color:windowtext;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">31、<span lang="EN-US">DB</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">的三级结构模式结构中最接近用户的是</span><span lang="EN-US">___</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">35、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">在关系模式中，视图是三级模式结构中的</span><span lang="EN-US">___</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">。</span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">7、<span style="font-size:14.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">事务是持久性是指</span><span lang="EN-US" style="font-size:14.0pt">___</span><span style="font-size:14.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">21、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";color:windowtext">下列不属于需求分析阶段工作的是</span><span lang="EN-US" style="color:windowtext">___</span><span style="font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; color:windowtext">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; color:windowtext;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">2、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">下列聚合函数中正确的是</span><span lang="EN-US">___</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">12、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">数据库系统阶段，数据</span><span lang="EN-US">____</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">19、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";color:windowtext">在关系数据设计中，设计关系模式的</span><span lang="EN-US" style="color:windowtext">___</span><span style="font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; color:windowtext">的任务。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; color:windowtext;mso-font-kerning:0pt"> <o:p></o:p></span></p>