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________ is used to undo unwanted database changes.

The coding or scrambling of data so that humans cannot read them is called:

Database management involves all of the following EXCEPT:

What result will the following SQL statement produce? SELECT Avg(Standard_Price) as average from Product_V; 

In the figure shown below, which of the following business rules would apply? 

An attribute that must be present for every entity (or relationship) instance is a(n):

In the figure below, which of the following is a subtype of patient? 

The ________ rule specifies that an entity can be a member of only one subtype at a time.

________ specify computer systems requirements.

What result set is returned from the following query?SELECT Customer_Name, telephone  FROM customers  WHERE city in (‘Boston’,’New York’,’Denver’);