Section B: Solve the following questions: B1. Write one of the integrity rules (constraints) (business rules) that should be enforced in this application with the suitable customized error message that should appear to end users in case of violating this rule. (5 marks) B2. If most of the tenants searched for all the available apartments in a specific city, what would be the impact of this requirement on the design of your database? What are the advantages and disadvantages of this design issue?

The information contained in this message and any file and/or attachment transmitted herewith is confidential and may be legally privileged. It is intended solely for the use of the addressee and must not be disclosed to or used by anyone other than the addressee. If you receive this transmission by error, please notify the sender immediately by reply e-mail and destroy the original transmission and its attachments. If you are not the intended recipient, please be advised that viewing, copying, forwarding, printing and disseminating any information related to this mail is prohibited and you should not take any action based on the content of this mail and/or the attachments