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外键约束。子表有空值吗?错误1452(23000) - foreign key constraints. can child table have null values? ERROR 1452 (2 繁体
2015年05月03 - I have a controlled vocabulary table set up as such: 我有一个受控制的词汇表,如下所示: There are only two values ass

用于在员工进/出/升职等时保存员工行为历史的SQL模式 - SQL schema to hold history of employee actions when employees come/go/ 繁体
2008年09月30 - I m writing an app that contains the following tables: employee type, employee and employee action.

成千上万的db表对一个巨大的表。 - thousands of db tables VS one huge table 繁体
2012年09月19 - I am trying to develop an application that keeps track of daily stock data. Each day a new record is

构造此数据库表中的数据的最佳方式 - Best way to structure the data in this database table 繁体
2012年07月28 - This is general question about the best way I should setup a database, it is not specific to a softw

存储带有许多类别标签的项——位屏蔽? - storing an item that is tagged with many categories - bitmasking? 繁体
2009年12月04 - Maybe the solution is obvious, but I cant seem to find a good one. 也许解决方法是显而易见的,但我似乎找不到一个好的解决方案。 In

简单但繁重的应用程序消耗大量的资源。如何优化? - Simple but heavy application consuming a lot of resources. How to Optimize 繁体
2011年07月22 - Currently I have one monitor application in production. The job of this monitor is to collect specif

大学学习计划的数据库设计和结构 - database design and structure for university study plan 繁体
2015年05月13 - i want to create a tabel for study plan for each major where students can see the study plan and mar

如何构建和实施自助式自定义报告? - How do I architect and implement self-serve custom reporting? 繁体
2009年05月20 - What type of architecture, design and software would one need to provide something similar to the ex

具有房间的实时聊天项目的数据库模式 - Database schema for a live chat project with rooms 繁体
2011年12月29 - For my university project, I m developing a dynamic live chat website with rooms, user registration,

如何在MySQL列中存储查询然后使用该查询? - How can I store a query in a MySQL column then subsequently use that query? 繁体
2012年06月30 - For example, say I m creating a table which stores promo codes for a shipping site. I want to have t


 
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