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MIT License Copyright (c) 2024 沉舟 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

简介

数据访问层(DAL)- Python: 1、负责与数据库进行交互,执行数据的增删改查操作; 2、它隐藏了数据访问的细节,为业务逻辑层(BLL)提供统一的数据访问接口; 3、数据访问层(DAL)的设计可以使业务逻辑层(BLL)与具体的数据存储方式解耦,便于数据库的迁移和扩展; 4、通讯协议层可以视为数据访问层(DAL)的一个子层或扩展,它负责处理与通信相关的细节,并向数据访问层提供必要的接口和服务。 展开 收起
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