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Each row of the table Department describes a department. Deptno is the primary key. Deptmgr (Department manager) refers to Empno in table Employee.
Each row of the table Project describes a project. The primary key is Projno. Projmgr (project manager. refers to Empno in the table Employee.
The table Projstaff indicates the staff assigned to various Projects.
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.
-To retrieve the projects in which any employee participates,the following operator would be used:
Non-Human Communication
Communication methods observed among animals, plants, and machines, excluding human language and interaction.
Signs
Observable indicators or symptoms of a particular condition or the presence of something.
Critical Differences
Significant or substantial variances between entities or conditions that are of importance to understanding or decision-making.
Prototypes
Original or first models of something from which other forms are copied or developed, often used in the context of designs, technology, or cognition.
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