Define Primary key and foreign key : Foreign Key « Constraints « SQL Server / T-SQL

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SQL Server / T-SQL » Constraints » Foreign Key 
Define Primary key and foreign key


1CREATE TABLE Matches (
2>    Society_Group_Id int NOT NULL ,
3>    Match_Id         int IDENTITY (11NOT NULL PRIMARY KEY CLUSTERED,
4>    Points_Against   smallint NOT NULL
5)
6> GO
1>
2CREATE TABLE Match_Scores (
3>    Match_Id     int NOT NULL PRIMARY KEY CLUSTERED,
4>    Player_Id    int NOT NULL ,
5>    Score_Points tinyint NULL
6)
7> GO
1>
2> ALTER TABLE Match_Scores
3>    ADD CONSTRAINT [FK_Match_Scores_MatchesFOREIGN KEY (Match_Id)
4>    REFERENCES [Matches] ([Match_Id])
5> GO
1>
2> drop table Matches
3> GO
1>
2> drop table Match_scores
3> GO
1>
           
       
Related examples in the same category
1.Table-level constraints
2.How to use foreign key constraints
3.Adding a Foreign Key to an Existing Table
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