1. Database 2

2. Create relationship using Foreign Keys
Relationship between tables using foreign keys
Open a windows form app named Form1
Make foreign keys
Choose the table from foreign server explorer
Go to foreign key and add a foreign key 
Give it a name FK1 ----> a code will be shown
Go to code  Constraint [FK1 ] Foreign key [studentid] References [student]  [studentID] 
Add another key as a foreign key to get composite key  Constraint [FK2 ] Foreign key [courseid] References [course]  [courseID] 
Update ----> update data base

3. 2- Generating queries Go to form Go to dataset
Double click on dataset ---> a window will open
Right click on this window -----> choose add ----> table add option -----> wizard will open -----> click next ----> generate query
Go to tables ----> query builder > add tables you want by choosing them > choose from each table the attributes you want ----->
the query will be automatically created -----> click ok ----->next -----> next -----> finish

4. Adding tables to data source
Open your windows form (already created )
Go to view ----> open data source
Data source -----> right click -----> configure data source with wizard
-----> click wizard option ----> include tables ----> click finish