既可以拖放字段形成新表，也可以在两表之间移动字段，还可以重命名表和设置主键字段。
You can drag and drop fields to make new tables, and to move fields between tables. You can also rename the tables, and set primary key fields.
由于当用户添加行时，表会展开，因此应该相对于表调整To tal Price标签和字段的位置，以便当表增加时它们也跟着移动。
Because the table expands when the user adds rows, you should position the Total Price label and field relative to the table so that they move as the table grows.
ToDo接口表示移动设备上的Task数据库中的单个任务，重要的字段是Note or Summary、Priority、Completion Date、Due Date和whether completed。
The ToDo interface represents a single task on the task database on the mobile device. The important fields are Note or Summary, Priority, Completion Date, Due Date and whether completed.
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