Match Each of the Following E-R Structures with Its Relational

question 94

Multiple Choice

Match each of the following E-R structures with its relational representation.
-Place the primary key of the entity on the one side of the relationship as a foreign key in the relation for the entity on the many side.

• A)regular entity
• B)weak entity
• C)binary or unary 1:1 relationship
• D)binary 1:N relationship
• E)binary or unary M:N relationship or associative entity
• F)binary or unary M:N relationship or associative entity with its own key

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Definitions:

Methadone

A synthetic opioid used medically both for pain management and as a treatment for narcotic addiction, especially heroin.

Toxemia

A medical condition in pregnant women characterized by high blood pressure, swelling, and protein in the urine, also known as pre-eclampsia.

Thalidomide

A drug originally marketed in the 1950s as a sedative, but later found to cause birth defects when taken by pregnant women, leading to strict controls on its use.

Kaposi's Sarcoma

A type of cancer that forms in the lining of blood and lymph vessels, often associated with weakened immune systems, like in AIDS.