CENTRAL SCHOOL LIBRARY Observe the ER Diagram for the CENTRAL SCHOOL LIBRARY

question 51

Multiple Choice

CENTRAL SCHOOL LIBRARY
Observe the ER diagram for the CENTRAL SCHOOL LIBRARY

-How many foreign keys will the relational schema mapped from the Central School Library ER diagram have?

• A)0
• B)1
• C)2

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Definitions:

Phosphorous

A reactive, nonmetallic element essential for life, involved in energy transfer and the formation of bones and teeth.

Feldspar

A collection of minerals essential for forming rocks, which are highly prevalent in the Earth's crust and utilized in the production of ceramics and glass.

Hematite

A reddish-black mineral consisting of ferric oxide, commonly used as an iron ore or in pigment production.

Halite

A mineral composed of sodium chloride (NaCl), commonly known as rock salt, which forms by the evaporation of saline water in enclosed basins.