PEAA_学习笔记_Active Record

An object that wraps a record data structure in an external resource, such as a row in a database table, and adds some domain logic to that object.

Active Record uses the most obvious approach: put data access logic into the domain object. This way all people know how to read and write their data from the database.

把各自的CRUD操作都写在Domain Object的类里面,这样做的好处是减少 Transaction Script的体积,因为 各个演员自己会做持久化,不用麻烦总导演了

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