Podcast
Questions and Answers
What is the purpose of a foreign key in a one-to-one relationship?
What is the purpose of a foreign key in a one-to-one relationship?
In a recursive one-to-many relationship, each instance of an entity is related to:
In a recursive one-to-many relationship, each instance of an entity is related to:
What is the main characteristic of mutually exclusive relationships?
What is the main characteristic of mutually exclusive relationships?
When implementing arc relationships, where should foreign keys be placed?
When implementing arc relationships, where should foreign keys be placed?
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What is a characteristic of subtype entities in supertype-subtype relationships?
What is a characteristic of subtype entities in supertype-subtype relationships?
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In super/subtype entities, why are subtypes considered mutually exclusive?
In super/subtype entities, why are subtypes considered mutually exclusive?
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What is a common challenge that designers and users face in conceptual models according to the text?
What is a common challenge that designers and users face in conceptual models according to the text?
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Which type of relationship ensures that only one foreign key is inserted when a record is created?
Which type of relationship ensures that only one foreign key is inserted when a record is created?
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'Supertypes and Subtypes' involve which kind of relationships?
'Supertypes and Subtypes' involve which kind of relationships?
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'Connection Traps' in conceptual models arise due to:
'Connection Traps' in conceptual models arise due to:
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Study Notes
- Students may not always get their preferred project and can be assigned one based on their course.
- Regular meetings with supervisors are required, each recorded with outcomes, next meeting date, and work needed.
- Module leader wants a monthly report on meeting attendance to identify absentee students.
- Assignments in the module have descriptions, weightings, and deadlines, with submissions recorded along with grades.
- End-of-semester report will show overall grades for each student.
- Students register for three project choices, rank them, and a project is allocated based on their preferences.
- Concepts covered include recursive, mutually exclusive, supertype and subtype relationships.
- Arc relationships are mutually exclusive with shared relationship names and cardinality.
- Tables for implementing arc relationships require foreign keys and check constraints.
- Supertype entities have parent-child relationships with subtype entities.
- Subtypes are specializations of supertypes with common attributes inherited.
- Connection traps in conceptual models can arise from misinterpretation of relationship meanings.
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Description
Test your knowledge on allocation of projects in ISDB course and the importance of holding regular meetings with supervisors. Explore scenarios related to project allocation, student-supervisor meetings, and recording meeting outcomes.
