State whether each of the following is true or false. If false, explain why.
1. Providing the same value for a foreign key in multiple rows causes the DBMS to report
an error.
2. Providing a foreign-key value that does not appear as a primary-key value in another
table is an error.
3.The result of a query can be sorted in ascending or descending order
4. A BindingNavigator object can extract data from a database
5. A DbContext automatically saves changes made back to the database
1. False. Multiple rows can have the same value for a foreign key. Providing the same
value for the primary key in multiple rows causes the DBMS to report an error, because
duplicate primary keys would prevent each row from being identified uniquely.
2. True
3. True
4. False. A BindingNavigator allows users to browse and manipulate data displayed by
another GUI control. A DbContext can extract data from a database.
5. False. You must call the SaveChanges method of the DbContext to save the changes
made back to the database.
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