COMPUTER SCIENCE AND ENGINEERING
SOFTWARE ENGINEERING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Association
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Inheritance
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Aggregation
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Class
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Detailed explanation-1: -Recursive relationship: Relationship exists between occurrences of the same entity set. Binary relationship: Two entities are associated. Ternary relationship: Three entities are associated.
Detailed explanation-2: -ERD stands for entity relationship diagram. People also call these types of diagrams ER diagrams and Entity Relationship Models. An ERD visualizes the relationships between entities like people, things, or concepts in a database. An ERD will also often visualize the attributes of these entities.
Detailed explanation-3: -Cardinality. Defines the numerical attributes of the relationship between two entities or entity sets. The three main cardinal relationships are one-to-one, one-to-many, and many-many.
Detailed explanation-4: -For example, if the key of A was 1 and the key of B was 2, then the key of the associative entity AB would be 1, 2. CASE tools automatically resolve this by creating an associative entity during model transformation.