请教一下，app和微信 两个共通的问题
现在好多市面上的app都和微信做了共通的开发，
比如说，京东，有微信版的，也有APP版的
卷皮，有微信版的，也有APP版的
问题来了，微信、APP他们两个应用用的同一个数据库吧？ （比如用户的资料信息，以及购买记录、购物车等
然后，他们的应用文件， 是相同的两份吗？ 一份是微信的文件目录， 一份是APP的文件目录 ？
应该是这样的，但是他们是怎么同步到一起的呢？ 用手机号？还是什么 ，尤其是 现在先开发的微信版本，再开发APP，怎么联到一起啊？ 微信公共平台可以不登录，只要授权就可以进入微信商城（用户的手机也没有强制让其输入），有用户的部分信息。
APP将来做，肯定有个登录窗口，以及微信快捷登录， 微信、APP怎么用同一个数据库？还是？
请教了，谢谢
回复讨论(解决方案)
同一个数据库,微信可以用openid, 绑定手机号即可
微信和APP 关联， 只用用户的手机号， 从而 两个地方都可以登录，数据也同步
还有其它方法吗？
用户表 用两套吗？
然后关联？
考虑到，有几种可能，微信、APP 张三同时用，
李四只用微信 ，可能不想下载APP，以后再下载安装
王五只用APP，可能还没有微信
用户表 有几套，取决于你的应用需求（独立性）
按你的补充表述，应该只有一套
如果各弄一套，再弄个 sso 整合在一起，也是可以的
但有事倍功半的嫌疑
参考openid。
同一个数据库，通过接口来请求数据库
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