Which of the following symbols represents a many-to-many relationship in an E-R model?

a straight line with a crow’s foot at both ends

a straight line with a crow’s foot at one end

Quiz

Oracle 12c: SQL Midterm Practice

Brad Gustafson 5 perguntas

Fazer o quiz

1Which of the following represents a row in a table?
1. Aan attribute
2. Ba characteristic
3. Ca field
4. Da record
2Which 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?
1. Aone-to-one
2. Bone-to-many
3. Cmany-to-many
4. Dnone of the above
3An entity is represented in an E-R model as a(n)
1. Aarrow
2. Bcrow's foot
3. Cdashed line
4. Dnone of the above
4Which of the following is not an E-R model relationship?
1. Asome-to-many
2. Bone-to-one
3. Cone-to-many
4. Dmany-to-many
5Which of the following symbols represents a many-to-many relationship in an E-R model?
1. Aa straight line
2. Bdashed line
3. Ca straight line with a crow’s foot at both ends
4. Da straight line with a crow’s foot at one end