<span>Its location on Europe's West coast and rulers encouraged and paid for voyages</span>
To enforce referential integrity, the database can return an error instead of doing the requested action or do the requested action and do the related changes to the related tables
Thus the answer is either a or b.
Explanation:
When the given data base in a table is valid and if it is consistent then it is called as referential integrity and it also refers to the consistency within the relationship. This type of database is much important because it will keep us introducing to the errors in the databases and it also checks if the reference from one table is equal to the other table.
The main function is to prevent the users from entering the wrong and inconsistent data. So in referential integrity the database will return the error instead of doing the required action or it can do the related changes to the related tables.
Option b. full employment
Full employment as an employment rate that includes no cyclical (also known as deficient demand or Keynesian) unemployment in other words, when there is enough overall demand in the economy for everyone who wants a job to have one.
What sentence?
try coping and pasting the whole question on here
