Consider the following information about a university database:   Each project is managed by one professor. And each project is worked on by one or more professors. but professors can manage and/or work on multiple projects.   Each project is worked on by one or more graduate students. When graduate students work on a project, a professor must supervise their work on the project. Graduate students can work on multiple projects, in which case they will have a supervisor for each one.   Departments have a professor who runs the department. professors work in one or more departments, and for each department that they work in, a time percentage is associated with their job. Graduate students have one major department. Each graduate student has another, more senior graduate student who advises him or her on what courses to take(advisor). Professors have an SSN, a name, an age, a rank, and a research specialty. Projects have a project number, a sponsor name (e.g., NSF), a starting date, an ending date, and a budget. Graduate students have an SSN, a name, an age, and average degrees

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Consider the following information about a university database:

 

  • Each project is managed by one professor. And each project is worked on by one or more professors. but professors can manage and/or work on multiple projects.

 

  • Each project is worked on by one or more graduate students. When graduate students work on a project, a professor must supervise their work on the project. Graduate students can work on multiple projects, in which case they will have a supervisor for each one.

 

  • Departments have a professor who runs the department. professors work in one or more departments, and for each department that they work in, a time percentage is associated with their job.

  • Graduate students have one major department. Each graduate student has another, more senior graduate student who advises him or her on what courses to take(advisor).

Professors have an SSN, a name, an age, a rank, and a research specialty. Projects have a project number, a sponsor name (e.g., NSF), a starting date, an ending date, and a budget. Graduate students have an SSN, a name, an age, and average degrees

Departments have a department number, a department name, and a main office.

 

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