Chapter 3 Flashcards
Entity-Relationship Model (ER Model) (9 cards)
1
Q
What does the following Symbol mean?
A
Entity.
(كائن عادي)
2
Q
What does the following Symbol mean?
A
Weak Entity.
3
Q
What does the following Symbol mean?
A
Relationship.
(علاقة عادية)
4
Q
What does the following Symbol mean?
A
Identifying Relationship.
5
Q
What does the following Symbol mean?
A
Attribute.
(صفة عادية)
6
Q
What does the following Symbol mean?
A
Key Attribute.
7
Q
What does the following Symbol mean?
A
Multivalued Attribute.
8
Q
What does the following Symbol mean?
A
Composite Attribute.
9
Q
What does the following Symbol mean?
A
Derived Attribute.
