ERD Flashcards
(4 cards)
1
Q
What is an entity
A
Specific things or objects
2
Q
What is an attribute
A
A property used to describe an entity
3
Q
What is a key attribute?
A
An attribute where each entity with that attribute must have a different unique value
4
Q
What is a weak entity
A
An entity that does not have a key attribute and is identification-dependent on another entity; Must participate in an identifying relationship
