数据建模工具操作

• 1）新建模型 https://www.bilibili.com/video/BV1sS4y1A7YA
• 2）主题域 https://www.bilibili.com/video/BV1NY4y187JM
• 3）实体 https://www.bilibili.com/video/BV1EL4y1V7Hy
• 4）属性字段 https://www.bilibili.com/video/BV1YR4y1K7qL
• 5）关系 https://www.bilibili.com/video/BV1dT4y1a7ip
• 6）索引表空间分区 https://www.bilibili.com/video/BV19T4y1a7ct
• 7）UDP https://www.bilibili.com/video/BV1h3411M7GM
• 8）布局缩放样式 https://www.bilibili.com/video/BV1XB4y127Eg