Which of the following represents a row in a table?
an attribute
a characteristic
a field
a record
Which of the following defines a relationship in which each occurrence of data in one entityis represented by multiple occurrences of the data in the other entity?
one-to-one
one-to-many
many-to-many
none of the above
An entity is represented in an E-R model as a(n)
arrow
crow's foot
dashed line
Which of the following is not an E-R model relationship?
some-to-many
Which of the following symbols represents a many-to-many relationship in an E-R model?
a straight line
a straight line with a crow’s foot at both ends
a straight line with a crow’s foot at one end
