For a Unary M:N Relationship

question 105

Multiple Choice

For a unary M:N relationship:

• A) the entity type is modeled as one relation; a separate relation is created to represent the M:N relationship; the new relation has a composite key that consists of two attributes that both take their values from the same primary key.
• B) the entity type and the M:N relationship are modeled as one relation; a composite key consisting of two attributes that both take their values from the same primary key is used as the primary key for the relation.
• C) separate relations for the class and for each subclass are created; primary and foreign keys are established for each class.
• D) the primary key of the entity on the one side of the relationship serves as a foreign key in the relation on the many side of the relationship.
• E) none of the above is true.

---

Definitions:

Operating Cycle

The period it takes for a business to buy inventory, sell products or services, and collect cash from sales.

Current Liability

Financial obligations that are due to be paid within one year or within the normal operating cycle of a business.

Working Capital

The measure of a company's operational efficiency and short-term financial health, calculated as current assets minus current liabilities.

Taxes Payable

Liabilities due to local, state, or federal tax authorities within the upcoming fiscal period.