数据库问题

SQL Server: how to constrain a table to contain a single row?(SQL Server:如何限制表包含单行?)...

Database-wide unique-yet-simple identifiers in SQL Server(SQL Server 中数据库范围的唯一但简单的标识符)...

Good tool to visualise database schema?(可视化数据库架构的好工具?)...

Tables whose sole purpose is specify a subset of another table(唯一目的是指定另一个表的子集的表)...

Is using a Master Table for shared columns good practice for an entire database?(对整个数据库使用共享列的主表是一种很好的做法吗?)...

Table relationship for subtypes(子类型的表关系)...

Creating a flattened table/view of a hierarchically-defined set of data(创建分层定义的数据集的扁平表/视图)...

MySQL: how to do row-level security (like Oracle#39;s Virtual Private Database)?(MySQL:如何做到行级安全(如 Oracle 的 Virtual Private Database)?)...

MySQL second auto increment field based on foreign key(MySQL基于外键的第二个自增字段)...

How to Maintain Foreign Key Constraint Across Different Databases?(如何维护跨数据库的外键约束?)...

UNIQUE constraint controlled by a bit column(由位列控制的 UNIQUE 约束)...

What is the best way to enforce a #39;subset#39; relationship with integrity constraints(强制执行具有完整性约束的“子集关系的最佳方法是什么)...