Define a one-to-many relationship.
Q: Explain Basic concepts and definitions in relationships?
A: Given: Explain Basic concepts and definitions in relationships?
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Q: One-to-many relationships are defined.
A: Below is the answer :
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A: Entity relationship models are based on the real-world entities and their relationships.
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Q: Explain Entity Relationship Diagram with a suitable example.
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Q: Explain briefly four concerns that may arise when two or more relationships are combined.
A: Introduction: Four challenges arise during the merger of relations, each with a remedy.
Q: Produce an ERD from a given scenario using correct: Notations Naming conventions Relationships.
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Q: Define and describe an entity-relationship model.
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A: According to the information given:- We have to produce ER diagram of the Grand villa Hotels system.
Q: Relationship Analysis • Relationship name: PARENT ENTITY relationship name CHILD_ENTITY (the name is…
A: Answer:
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Q: Explain briefly four issues that may occur when combining two or more relationships.
A: During the merger of relations, four issues develop, each with a solution. Relation: The…
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A: Create an ERD for a car dealership and also show entity names, primary keys, attributes for each…
Q: Define the term entity and give an example of an entity (other than the one from this chapter).
A: An entity represents a real-world example. It represents the real-world object.
Define a one-to-many relationship.
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- School system scenario Students come at the beginning of the school year to register in a school system and pay for the year’s fees..Each student is added to the appropriate class . each class has several teachers already registered in the system, tests are made by the teachers and the teacher adds the students' grades in the system, and at the end of the year the system issues students ’certificates. draw Entity Relationship diagram(ERD) from above scenarioDesign an Entity Relationship Diagram for the following example:When is it important to use an associative entity to express a many-to-many relationship?