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Create Foreign Key Relationship With. Click on the ellipse next to Tables and Columns Specification. The code sample you have supplied means that in Customer you will have a PK named CustomerID which is different from UserId.
Database Tables Primary Keys Foriegn Keys And Relationships Learn Programming Dbms Learn Sql from www.pinterest.com
First to explicitly assign the foreign key constraint a name you use the CONSTRAINT clause followed by the name. In this example person and idcard tables have a one-to-one relationship. Open you table that you need to create foreign key.
Step 3 In Foreign Key Relationship Click Add Step 4 In Table and Column Spec click on icon.
Click on the ellipse next to Tables and Columns Specification. The use of a foreign key is simply to link the attributes of two tables together with the help of a primary key attribute. One-To-One Foreign Key Relationship One to one relationship refers to the relationship between two entitiestables A and B in which one itemrow of A may be linked with only one itemrow of B and vice versa. Thus it is used for creating and maintaining the relationship between the two relations.
