When Transforming an ID-Dependent E-R Data Model Relationship into a Relational

question 59

Multiple Choice

When transforming an ID-dependent E-R data model relationship into a relational database design and the child entity is designed to use a surrogate key,then ________.

• A)the parent entity must also use a surrogate key
• B)the relationship remains an ID-dependent relationship
• C)the relationship changes to a non-ID-dependent relationship
• D)A and B
• E)A and C

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Definitions:

Exchange Rate

The price of one currency in terms of another, allowing for the conversion of monetary values between countries.

Demand for Currency

The desire or need for holding cash as opposed to other forms of wealth or assets.

Pegged Currencies

A regime where a country's currency value is fixed relative to another currency or a basket of currencies.

U.S. Dollar

The official currency of the United States, widely used as a benchmark and reserve currency around the world.