Question

____________________ key restrictions determine the relationships between tables.​

____________________ refers to the number of items that must be included in a relationship.​

​A relationship that is not necessary for identification is called a(n) ____________________ relationship.

A weak entity corresponds to the term ____________________.​

A(n) ____________________ is a special value that represents the absence of a value in a field.​

You can recognize entity subtypes by the fact the primary key is also a(n) ____________________.​

One way to indicate a one-to-many relationship is to place a crow's foot at the ____________________ end of the relationship.​

Answer 1

1. Foreign key restrictions determine the relationships between tables.​

2. Cardinality refers to the number of items that must be included in a relationship.​ ​

3. A relationship that is not necessary for identification is called a(n) nonidentifying relationship.

4. A weak entity corresponds to the term dependent entity.

5. A(n) null is a special value that represents the absence of a value in a field.​

6. You can recognize entity subtypes by the fact the primary key is also a(n) Foreign key.​

7. One way to indicate a one-to-many relationship is to place a crow's foot at the many end of the relationship.​