Note 1: We will refer to Dan Murphy's article " A practical introduction to message mediation" throughout this section.
注意 1:我们将在此部分中参考 Dan Murphy 的文章“ 消息中介的实用介绍”。
To ensure the database is normalized (see Note 1), a new table SUBJECTS_SUBSCRIPTIONS will be created to join the SUBJECTS and SUBSCRIPTIONS tables.
为了确保数据库是规范化的(参见注1),创建一个新的表subjects_subscriptions来连接SUBJECTS和subscriptions表。
Note 1: an alternative design for the MDC dimension on the Transactions history table is to define Transaction date at a smaller granularity, such as by week or by day.
注1:对于Transactions历史表上的mdc维,另一种设计方案是以更细的粒度定义Transaction日期,例如每周或每天。
应用推荐