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Each Row of the Table Department Describes a Department

question 15

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Table Employee Empno  Empname  Empdeptno  Empsalary  Emptitle Table~Employee\\\begin{array}{|l|l|l|l|l|}\hline \text { Empno } & \text { Empname } & \text { Empdeptno } & \text { Empsalary } & \text { Emptitle } \\\hline\end{array}
Each row of the table Department describes a department. Deptno is the primary key. Deptmgr (Department manager) refers to Empno in table Employee.

Table Department Deptno  Deptname  Deptcity  Deptmgr Table~Department\\\begin{array}{|l|l|l|l|}\hline \text { Deptno } & \text { Deptname } & \text { Deptcity } & \text { Deptmgr } \\\hline\end{array}
Each row of the table Project describes a project. The primary key is Projno. Projmgr (project manager. refers to Empno in the table Employee.

Table Project Projno  Projname  Projmgr Table~Project\\\begin{array}{|l|l|l|}\hline \text { Projno } & \text { Projname } & \text { Projmgr } \\\hline\end{array}
The table Projstaff indicates the staff assigned to various Projects.

Table Project Prstno  Prstempno  Prsthours  Prstdate  Prstasgtno Table~Project\\\begin{array}{|l|l|l|l|l|}\hline \text { Prstno } & \text { Prstempno } & \text { Prsthours } & \text { Prstdate } & \text { Prstasgtno } \\\hline\end{array}
The combination of columns Prstno, Prstempno is a candidate key. There could be other candidate
keys. Prstempno is the Empno in table Employee of the employee working on project number Prstno, which refers to Projno in the table Project. The meaning of Prstasgtno is left undefined.
-Which of the following columns of the table Department is a foreign key?

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Definitions:

Brainstem

The part of the brain connecting the spinal cord to the forebrain and cerebrum, responsible for basic life functions such as breathing and heart rate.

Thalamus

A brain structure that acts as a relay station, processing and transmitting information from the senses to appropriate areas of the brain.

Cerebrum

The largest part of the brain, responsible for voluntary muscular activity, vision, speech, taste, hearing, thought, and memory.

Hippocampus

A major component of the brain, located in the temporal lobe, important for learning and memory.

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