15. Below is a fragment of the entity-relationship diagram. For the relationship shown, identify its relationship, cardinality, and existence. Employee is assigned to Parking Space a. Relationship:...

Extracted text: 15. Below is a fragment of the entity-relationship diagram. For the relationship shown, identify its relationship, cardinality, and existence. Employee is assigned to Parking Space a. Relationship: one-to-many Cardinality: zero or one employee per parking space, one or many parking spaces per employee Existence: parking space required, employee optional Ob. Relationship: zero-to-one Cardinality: zero or one employee per parking space, one or many parking spaces per employee Existence: parking space required, employee required О с. Relationship: zero-to-one Cardinality: zero or one employee per parking space, one or many parking spaces per employee Existence: parking space required, employee optional Od. Relationship: one-to-one Cardinality: zero or one employee per parking space, one or many parking spaces per employee Existence: parking space required, employee optional