题目：
在数据库的三级模式体系结构中，外模式与模式之间的映像(外模式/模式)，实现了数据库的 【10】 独立性。
答案：
参考答案：逻辑
解析：[评析] 数据库系统的三级模式是对数据的三个抽象级别。为了能够在内部实现这3个抽象层次之间的联系和转换，数据库管理系统在这三级模式之间提供了两层映像：外模式/模式映像和模式/内模式映像。正是这两层映像保证了数据库系统中的数据能够具有较高的逻辑独立和物理独立性。
在数据库的三级模式体系结构中，外模式与模式之间的映像(外模式/模式)，实现了数据库的
来源：www.tikuol.com
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Are you looking for some new and exciting places to take your kids (孩子) to? Try some of these places.
·Visit art museums. They offer a variety of activities to excite your kids’interest. Many offer workshops（作坊）for making land-made pieces, traveling exhibits, book signings by children's favorite writer, and even musical performances and other arts.
·Head to a natural history museum. This is where kids can discover the past from dinosaur(恐龙) models to rock collections and pictures of stars in the sky. Also, ask what kind of workshops and educational programs are prepared for kids and any special events that are coming up.
·Go to a Youtheater. Look for one in your area offering plays for child and family visitors. Pre-show play shops are conducted by area artists and educators where kids can discover the secret about performing arts. Puppet(木偶)making and stage make-up are just a couple of the special offerings you might find.
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