数据库概念原理的相关内容

阿里云文档 2025-06-04

PGVector的背景、原理、使用方法及其他相关信息

PGVector是一个高效的向量数据库插件，支持多种向量计算算法和数据类型，同时还能够高效存储与查询以向量表示的AI Embedding。本文档将为您介绍PGVector的背景、原理、使用方法及其他相关信息。

阿里云文档 2025-02-13

PolarDB集群的数据备份是指在某个时间点上对集群的全量数据进行备份，生成一个备份集（快照）。该备份过程采用ROW（Redirect-on-Write）快照机制，直接存储在PolarDB集群的分布式存储系统上。在保存备份时，数据并未被真正复制。而当数据块发生修改时，系统会将历史版本的数据块保留给快照，同时生成一个新的数据块被原数据引用（Redirect）。本文将详细介绍创建备份、删除备份以及在数...

文章 2024-10-13 来自：开发者社区

Mysql(3)—数据库相关概念及工作原理

Mysql(3)—数据库相关概念及工作原理一、数据库相关概念数据库（Database, DB）：数据库是一个以某种有组织的方式存储的数据集合。它通常包括一个或多个不同的主题领域或用途的数据表。数据库管理系统（Database Management System, DBMS）：这是一种软件，用来创建和管理数据库。DBMS允许用户定义、创建、维护...

文章 2024-04-30 来自：开发者社区

矢量数据库基础：概念、原理与应用场景

一、引言随着大数据和人工智能技术的快速发展，数据存储和检索的方式也在不断地演变。矢量数据库，作为一种专门用于处理高维向量数据的数据库系统，已经逐渐成为数据科学领域的重要工具。本文将深入探讨矢量数据库的概念、原理以及应用场景，以帮助读者更好地理解这一技术。二、矢量数据库的概念矢量数据库，最初主要用于存储、检索和管理地理信息...

阿里云文档 2024-04-24

PolarDBPostgreSQL版的ePQ架构原理

PolarDB PostgreSQL版（兼容Oracle）实现了弹性跨机并行查询（ePQ）特性，能够帮助您解决原先的PolarDB PostgreSQL版（兼容Oracle）在处理复杂的AP查询时会遇到的问题。

阿里云文档 2024-03-27

分类分级原理

DMS分类分级扫描能够对数据库中的敏感数据进行检测，并自动为符合识别规则的字段打上相应的分类分级标签，还可以保护高敏感等级的字段，并将敏感字段直观地展示在识别结果中。本文介绍DMS敏感数据保护分类分级扫描功能的原理。

阿里云文档 2024-01-26

SelectDB数据缓存的原理与使用方法_云数据库 SelectDB 版(SelectDB)

本文介绍云数据库 SelectDB 版中湖仓一体相关的数据缓存功能（File Cache），帮助您对外部数据源进行高效的联邦分析。

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