此内容来自第三方平台 (Dailymotion)。如果此视频侵犯了您的版权，请使用 立即删除 工具。
SQL Tutorial - Table Constraint
描述
In a relational database, one can place constraints on what value can be entered into a table. This tutorial discusses four of the constraints and how they are implemented in SQL: NOT NULL, DEFAULT, UNIQUE, and CHECK.
相关视频
Part-3 Table Constraints in SQL NOT NULL , DEFAULT
ALLCPL
SQL NOT NULL Constraint
CodeOfDotNet
SQL SERVER 2017 TUTORIAL 8 : Constraints
FAST tech
Microsoft SQL Server 2012 tutorial 2- Creating and Altering Tables with T-SQL
Wrestle TV
Microsoft SQL Server 2012 tutorial 5- Creating and Modifying Constraints
Wrestle TV
Hey guys! Want to make a unique and elegant table decor without spending too much? Let’s follow this moon stone table decor tutorial!
Kalimosodo DIY