数据库层次结构的相关内容

问答 2021-11-19 来自：开发者社区

一、数据库管理系统的层次结构之数据存取层数据存取介于语言处理层和数据存储层之间。它向上提供单元组接口，即导航式的一次一个元组的存取操作；向下则以系统缓冲区的存储器接口作为实现基础。接口关系如下：数据存储层所涉及的主要数据结构为逻辑数据记录、逻辑块、逻辑存取路径。存取层的任务主要包括：提供一次一个元组的查找、插入、删除、修改的等基本操作。提供元组查找所循的存取路径以及对存取路径的维护操作，如对....

文章 2017-05-02 来自：开发者社区

《PowerShell V3——SQL Server 2012数据库自动化运维权威指南》——1.4　浏览SQL Server PowerShell层次结构

本节书摘来自异步社区出版社《PowerShell V3—SQL Server 2012数据库自动化运维权威指南》一书中的第1章，第1.4节，作者：【加拿大】Donabel Santos，更多章节内容可以访问云栖社区“异步社区”公众号查看。 1.4　浏览SQL Server PowerShell层次结构在SQL Server 2012中，原始的迷你Shell已经被废弃，SQLPS现在作为模块。从....

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