问题
填空题
【19】 是指实体间存在的对应关系。
答案
参考答案:联系
解析:[命题目的] 本题主要考查了联系的概念。[解题要点] 联系是指实体间存在的对应关系。[考点链接] 掌握数据库概念结构设计的概念。
【19】 是指实体间存在的对应关系。
参考答案:联系
解析:[命题目的] 本题主要考查了联系的概念。[解题要点] 联系是指实体间存在的对应关系。[考点链接] 掌握数据库概念结构设计的概念。
根据对话内容,从对话后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 —Oh,Christina,is that you?How have you been? —I've been okay. I've just been busy with school. We really should get together and have a chat. 小题1: —I'd love to,but I'm leaving for Miami at 8 tonight because my brother is getting married on Saturday morning. — 小题2: I hope that you have a nice time there. —Well,what are you doing now?Maybe we can go to the coffee shop and chat for a while. —I really wish I could, 小题3: —Tennis courts? 小题4: —I'm taking tennis lesson. My roommate is on a tennis team and she's gotten me interested in the sports. 小题5: —A little,but I haven't played for years. When I come back from my trip,I'll join you in taking lessons. —OK. Just give me a call when you get back. —I'll.
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