这再次说明了使用 XML 模型的优点和将业务逻辑放在数据库中的简便性。
This fact once again reinforces the advantage of using the XML model and the ease of pushing business logic into the database.
设计与构建：业务、设计和数据库模型的完成和变更情况；代码开发情况。
Design and construction: Completion of, and changes to, business, design, and database models; code development.
第二种是“以对象为中心”的方法，从业务模型和创建数据库来持久化这个模型开始。
The second is an "object-centric" approach, which starts with a business model and creates a database to persist the model.
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