You do not need to create the primary keys, sample tables, and the privacy tables.
您并不需要创建主密钥，范例表格，以及隐私表格。
Now you need to create the database tables and some sample data.
现在需要创建数据库表和一些样例数据。
With the powerful concept of these flows, you can sample, join, and modify tables.
通过这些强大的流，可以对表进行取样、联结和修改。
Sample data from these tables is shown in Figure 5.
来自这些表的示例数据见图5。
In our sample database, there are four tables.
我们的样例数据库中有4个表。
Create the database tables for the sample application.
为样例应用程序创建数据库表。
You will also populate the tables with some sample data.
您还将用样例数据填充数据库的表。
You will also populate the tables with some sample data.
您还将用样例数据填充数据库的表。
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