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mysql设计问题
mysql设计问题
mysql设计
表
问题
需要组织成如下的JSON,怎么
设计
数据表来存储数据?其中该数据由人工录入其中想不通的就是choice如何存储,他是一个数组,想过想把数组转换成字符串,选项之间以特殊的字符隔断,但是每个选项里如果有特殊字符怎么办,求更好的
设计
方案
关于优化
MySql
数据表
设计问题
遇到一个表
设计问题
,需求如下:为了描述人与标签的关系,1个人对应1或n个标签,多个人可对应1个标签,根据人找标签和根据标签找人。例子:(人)-(标签)小明-诚实、可爱小丽-可爱小王、小明-老实小张、小丽-美丽小张、小王、小丽-俊俏 ...
Mysql
字段类型
设计
相关
问题
!
Mysql
是以文件存储在我们的系统的硬盘上面,那么(1)当我们读取写入的时候就会有磁盘IO的
问题
(2)当我们存储的数据是以页单位存储,而且每页的大小是16K,那么我们要尽可能的让我们的一页数据存放的更多。表结构宽度不要太大,也就是列数...
并发每秒1万java-
mysql
的架构
设计问题
数据调用:客户请求查询机票价格,
mysql数据库
没有及时数据就直接通过机票接口查询并存入
数据库
,再从
数据库
读出数据给前台查询页面。公司
设计
同时在线最高100万ip,最高并发每秒1万的请求的java-
mysql
并发编程。请求高手指点.
mysql数据库设计
中遇到的
问题
我有地区、国籍、学历、职业等分类信息 要在注册时提供选择,这些数据怎么存比较好?每个分类建一张表好吗?
mysql数据库
有关上下级的
设计
方案
问题
现在有个应用商家可以添加下级,下级又可以添加下级相当于无限级.商家下面有后台的操作员,有面向市场的用户,设备等需求是当前操作的商家能够看到他下级、下下级、下下下级.的数据现在的处理方式是:先查出当前操作商家的所有下级 id(递归...
mysql
课程表
设计
的合理性的
问题
id int(11)tid int(11)/老师id ctype_id 课程类型 begintime 开课时间 timezone sid int(11)/学生订课 cancel_sid/学生取消 cancel_tid/老师取消 is_cancel/是否取消 sdate int(11)/发布日期...这样的
mysql数据库
课程表中的数据
设计
的合理吗?
用户评论内容,由
mysql
到mongodb的切换的
设计问题
最近我们做的项目准备将用户评论内容使用mongodb 存储,但是不知道用mogodb比用
mysql
的分库分表到底有哪些优势,哪位大神最好能提供一下简单的
设计
说明一下。如果没有事物,这样做会不会导致
数据库
存在脏数据。求指教!
MySQL
技术专题之
MySQL
分布式系统架构
设计
偏向扩容
问题
+业务拆分
数据库
的发展主要经历以下几个步骤:1主-1从架构双主-多从架构,读写分离表分区,提高并发分表,提高并发Master更换SSD分库,分表,提高并发分库分表实现过程可以将业务库划分成16个库,每个库64个表进行存储,总共1024个表,
MySQL
单表性能...
有个
问题
困惑了好久,关于
mysql
表的
设计
现在有个业务需要,就是账户余额的
问题
,怎么去
设计
这个账户余额的表呢?简单的update更新余额显然是行不通的如果用户在pc端,移动端操作余额,很有可能发生错误难道必须用事务吗?
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云数据库RDS MySQL版
MySQL 是全球最受欢迎的开源数据库,阿里云MySQL版 通过深度的内核优化和独享实例提供稳定极致的数据库性能,同时灵活的部署架构及产品形态,可满足不同场景下的数据库需求。
了解详情
管理控制台
在线咨询
最新活动
MySQL 1年仅19.9元
数据库专场优惠
快速入门
帮助文档
快速入门
最佳实践
SaaS上云数据库
数据库客户案例合集
产品推荐
云数据库PolarDB
云原生数据仓库MySQL
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云数据库RDS MySQL版
MySQL 是全球最受欢迎的开源数据库,阿里云MySQL版 通过深度的内核优化和独享实例提供稳定极致的数据库性能,同时灵活的部署架构及产品形态,可满足不同场景下的数据库需求。
了解详情
管理控制台
在线咨询
最新活动
MySQL 1年仅19.9元
数据库专场优惠
快速入门
帮助文档
快速入门
最佳实践
SaaS上云数据库
数据库客户案例合集
产品推荐
云数据库PolarDB
云原生数据仓库MySQL