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数据连接是进行所有数据分析之前的首要步骤,搭建原始数据与 Wyn 之间的桥梁,获取数据。
本章将详细介绍 Wyn 系统中各种数据源连接的相关操作。
Wyn 支持所有关系型数据库,并且特别为常用的 Oracle、SQLServer、MySQL、Postgres、SQLite 等多种数据库提供了专门的数据源接口(DataProvider)。
另外,您也可以通过上传已有的文件导入数据,如 CSV、Json、Excel及Xml格式的文件。此时,数据会被抽取进 Wyn 的数据仓库。
而对于 JSON 数据源,您甚至可以将数据来源从静态的 JSON 文件替换为动态的 URL 地址,从其他业务系统实时抓取动态数据。
type=info
提示
在 Wyn 中,数据源作为其他文档的基础,应该是一个相对稳定的文档,不宜经常修改。对数据源进行任何更改,尤其是影响数据查询的信息修改,都可能会影响依赖该数据源的其他文档。
因此,更新数据源后,需要您重新打开使用该数据源的数据集或模型,确认查询结果正确后,重新保存。