The State of New York certifies firefighters through- out the state and must keep track of all of them, as well as of the state’s fire departments. Each fire department has a unique department number, a name that also identifies its locale (city, county, etc.), the year it was established, and its main telephone number. Each certified firefighter has a unique fire- fighter number, a name, year of certification, home telephone number, and a rank (firefighter, fire lieu- tenant, fire captain, etc.) The state wants to record the fire department for which each firefighter currently works and each firefighter’s supervisor. Supervi- sors are always higher-ranking certified firefighters. Construct a relational database for New York’s fire departments and firefighters.
The State of New York certifies firefighters through- out the state and must keep track of all of them, as well as of the state’s fire departments. Each fire department has a unique department number, a name that also identifies its locale (city, county, etc.), the year it was established, and its main telephone number. Each certified firefighter has a unique fire- fighter number, a name, year of certification, home telephone number, and a rank (firefighter, fire lieu- tenant, fire captain, etc.) The state wants to record the fire department for which each firefighter currently works and each firefighter’s supervisor. Supervi- sors are always higher-ranking certified firefighters. Construct a relational
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