数据库设计的共性
做了很多数据库表的设计，发现了一些共性。 很多字段几乎必备的。 对于实体来说，比如用户、角色、分组等，一般都有ID、Name、Description等。 具体一点，常见的字段有以下几个： 必备字段 ID 主键，唯一ID Name，名字 Description，备注 常见字段 Alias,昵
做了很多数据库表的设计，发现了一些共性。
很多字段几乎必备的。
对于实体来说，比如用户、角色、分组等，一般都有ID、Name、Description等。
具体一点，常见的字段有以下几个：
必备字段
ID 主键，唯一ID
Name，名字
Description，备注
常见字段
Alias,昵称，别名
Status，实体的状态，比如正常、冻结
Category,类别，比如用户属于哪个组，角色是哪个，媒体的分类
联系方式字段
对于用户、公司、组织机构等，一般会有联系方式这个字段。
Mobile：手机号
Email：邮件
QQ：QQ号码，现在很多系统都允许填写QQ号了，QQ已经主键成为“行业标准”
Tel：固话
Fax：传真
7个标准字段
CreateUser:创建人
CreateTime:创建时间
UpdateUser:更新人
UpdateTime:更新时间
DeleteUser:删除人
DeleteTime:删除时间
IsDeleted:是否已经删除
数据库系统设计的共性
以上是数据库表设计的共性，如果针对整个数据库来说，也是存在共性的。
对于整个数据库系统设计来说，一般都会有用户管理和操作日志这个模块，有的系统会带有权限管理。
因此，构建一套标准的模块化的用户、日志、权限组件还是有必要的。
用户
User：ID,Name,Description，Email等
日志
OpLog：ID，UserId，OpType，OpObject，Time
操作人、操作对象、操作类型等
权限
角色、权限等。
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