One of the attributes an entity type should always have is a primary key.
Correct Answer:
Verified
Q2: Generalization hierarchies must have both disjointness and
Q3: A 1-M relationship cannot have any attributes.
Q4: When a weak entity lacks at least
Q5: In an identifying relationship,both of the participating
Q6: In a generalization hierarchy,since each subtype entity
Q7: An ERD diagram and a relational database
Q8: By way of comparison to natural language,relationships
Q9: Unary relationships are sometimes called reflexive relationships
Q10: In Crow's Foot notation,the maximum cardinality symbol
Q11: In an ERD diagram,primary and foreign keys
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents