1. Entities:
- College student
- Dorm room
- College
- Dormitory staff
2. Attributes:
- College student: ID, name, age, gender, contact information, major
- Dorm room: Room number, capacity, availability
- College: Name, location, contact information
- Dormitory staff: Staff ID, name, position, contact information
3. Degree of relationship:
- College student and dorm room: Many-to-One (many students can be assigned to one dorm room)
- College student and college: Many-to-One (many students can attend the same college)
- Dorm room and college: One-to-One (one dorm room is assigned to one college)
- Dormitory staff and college: One-to-Many (one staff member can work for one college, but a college can have multiple staff members)
4. Cardinalities:
- College student-Dorm room: Many students can be assigned to one dorm room. (1:M)
- College student-College: Many students can attend the same college. (M:1)
- Dorm room-College: One dorm room is assigned to one college. (1:1)
- Dormitory staff-College: One staff member can work for one college, but a college can have multiple staff members. (1:M)
5. Constraints:
- Dorm room capacity: The number of students assigned to a dorm room cannot exceed its capacity.
- Availability: A dorm room may be available or already assigned to a student.
project college student dorm.
1. Identify the entities
2. Identify their attributes
3. Identify the degree of their relationship
4. Identify their cardinalities
5. Identify their Constraints
3 answers
project university student dorm.
1. Identify the entities
2. Identify their attributes
3. Identify the degree of their relationship
4. Identify their cardinalities
5. Identify their Constraints
1. Identify the entities
2. Identify their attributes
3. Identify the degree of their relationship
4. Identify their cardinalities
5. Identify their Constraints
1. Entities:
- University student
- Dorm room
- University
- Dormitory staff
2. Attributes:
- University student: ID, name, age, gender, contact information, major, class year
- Dorm room: Room number, capacity, availability, floor, amenities
- University: Name, location, contact information, accreditation status
- Dormitory staff: Staff ID, name, position, contact information
3. Degree of relationship:
- University student and dorm room: Many-to-One (many students can be assigned to one dorm room)
- University student and university: Many-to-One (many students can attend the same university)
- Dorm room and university: One-to-One (one dorm room is assigned to one university)
- Dormitory staff and university: One-to-Many (one staff member can work for one university, but a university can have multiple staff members)
4. Cardinalities:
- University student-Dorm room: Many students can be assigned to one dorm room. (1:M)
- University student-University: Many students can attend the same university. (M:1)
- Dorm room-University: One dorm room is assigned to one university. (1:1)
- Dormitory staff-University: One staff member can work for one university, but a university can have multiple staff members. (1:M)
5. Constraints:
- Dorm room capacity: The number of students assigned to a dorm room cannot exceed its capacity.
- Availability: A dorm room may be available or already assigned to a student.
- Room assignments: Each student can be assigned to only one dorm room.
- University accreditation: The university must meet specific accreditation requirements.
- University student
- Dorm room
- University
- Dormitory staff
2. Attributes:
- University student: ID, name, age, gender, contact information, major, class year
- Dorm room: Room number, capacity, availability, floor, amenities
- University: Name, location, contact information, accreditation status
- Dormitory staff: Staff ID, name, position, contact information
3. Degree of relationship:
- University student and dorm room: Many-to-One (many students can be assigned to one dorm room)
- University student and university: Many-to-One (many students can attend the same university)
- Dorm room and university: One-to-One (one dorm room is assigned to one university)
- Dormitory staff and university: One-to-Many (one staff member can work for one university, but a university can have multiple staff members)
4. Cardinalities:
- University student-Dorm room: Many students can be assigned to one dorm room. (1:M)
- University student-University: Many students can attend the same university. (M:1)
- Dorm room-University: One dorm room is assigned to one university. (1:1)
- Dormitory staff-University: One staff member can work for one university, but a university can have multiple staff members. (1:M)
5. Constraints:
- Dorm room capacity: The number of students assigned to a dorm room cannot exceed its capacity.
- Availability: A dorm room may be available or already assigned to a student.
- Room assignments: Each student can be assigned to only one dorm room.
- University accreditation: The university must meet specific accreditation requirements.
3 answers