The following set of additional requirements were identified. • The majority of parking spaces are under cover and each can be allocated for use by a member of staff for a monthly rate. • Parking spaces that are not under cover are free to use and each can be allocated for use by a member of staff. Up to twenty covered parking spaces are available for use by visitors to the company. However, only members of staff are able to book out space for the day of the visit. There is no charge for this type of booking, but the member of staff must provide the visitor's vehicle license number. Which of the following statements are correct about the EER diagram that includes new requirements? I. ParkingLot and Space will be generalized to a ParkingSpot entity. II. The ParkingLot entity will be specialized into two entities that represent covered and uncovered parking lots. III. The disjoint constraint for the specialization/generalization hierarchy in this scenario will be disjoint.

The following set of additional requirements were identified. • The majority of parking spaces are under cover and each can be allocated for use by a member of staff for a monthly rate. • Parking spaces that are not under cover are free to use and each can be allocated for use by a member of staff. Up to twenty covered parking spaces are available for use by visitors to the company. However, only members of staff are able to book out space for the day of the visit. There is no charge for this type of booking, but the member of staff must provide the visitor's vehicle license number. Which of the following statements are correct about the EER diagram that includes new requirements? I. ParkingLot and Space will be generalized to a ParkingSpot entity. II. The ParkingLot entity will be specialized into two entities that represent covered and uncovered parking lots. III. The disjoint constraint for the specialization/generalization hierarchy in this scenario will be disjoint.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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