2012年计算机二级Access考试复习笔记9-Mysql Tutorial-php.cn

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2012年计算机二级Access考试复习笔记9

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Jun 07, 2016 pm 03:03 PM

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上机复习第二章表一、 1、建立表，修改表。 2、导入、联接外部数据。二、数据表视图: 1、添加记录，修改记录，删除记录 2、排序记录（按照一个字段排序，按照多个字段排序） 3、修改表的外观（格式菜单下命令：行高，列宽，字体，单元格显示效果，表格背

上机复习
第二章表
一、
1、建立表，修改表。
2、导入、联接外部数据。
二、
数据表视图:

1、添加记录，修改记录，删除记录
2、排序记录（按照一个字段排序，按照多个字段排序）
3、修改表的外观（格式菜单下命令：行高，列宽，字体，单元格显示效果，表格背景，冻结列，取消冻结列，隐藏列，取消隐藏列）
设计视图：1、添加字段 2、修改字段名3、删除字段 4、修改数据类型 5、修改字段属性（字段大小、格式、默认值、有效性规则、有效性文本、输入掩码、必填字段、索引、标题） 5、添加字段说明 6、设置关键字（一个字段和多个字段） 7、拆分表 8、修改表结构中的字段次序
三、操作细节
1、如何添加图片
2、有效性规则的要求。对规则的的描述一定要由相应的运算符号来表示。
3、关键字段的要求
4、日期的要求
5、必填字段的要求
6、输入掩码的特殊符号
7、对多个字段如何排序
8、对表的操作时候，需要知道某些操作是无法撤销的，所以进行操作之前，最好对自己操作的表进行备份，在确保自己没有任何错误的前提下再把自己备份的表删除。
9、在自己实际的操作过程中，有可能出现的错误是：选错字段或选错字段属性。
10、设置默认值，一定要和所在的数据类型相匹配，文本型字段值需要添加英文半角状态下的 ” ”,日期值需要半角状态下添加#,
11、在导入数据和联接数据时，需要切换相应的数据类型，才能显示你想要的文件。

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