Question: If a foreign key is not null, it must have a value that corresponds to the value of a primary key in another table. This

If a foreign key is not null, it must have a value that corresponds to the value of a primary key in another table. This is called

	a.	referential durability.
	b.	referential integrity.
	c.	preferential integrity.
	d.	reverential integrity.

A description of data elements in a database, relationships among them, and the logical model used to organize and describe the data is the definition of a

	a.	accounting information system.
	b.	program.
	c.	database.
	d.	schema.

Which of the following is NOT a common type of flowchart used to document AIS?

	a.	Program
	b.	System
	c.	Database
	d.	Document

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