Check constraints are supported in all of the major DBMS products, including DB2, Oracle, and SQL Server. But they are too-often ignored and not implemented in production databases. Properly defined, ...

It’s not unusual in ASP.NET MVC applications to send and receive data in a JSON format, typically as part of creating an AJAX application. In an earlier column, I showed how to use the new SQL Server ...

In Azure SQL Database you can also set a HISTORY_RETENTION_PERIOD (and should be able to do it in SQL Server 2017) to control how far back in time your history will extend. Converting Existing Table ...

In this sample statement, the condition (table1.keyfield=table2.keyfield) tells SQL to find records in both tables that contain matching values in the column named by keyfield.