Customer ={idC(PK), surname} Contract ={idC(PK), customer, consultant, insurance_type, date} Consultant means: id of some Staff member Staff={idPerson(PK), surname,dob, boss, email} Dob means: date of birth, boss: is id of another Staff member supervisor Insurance_Type={idT(pk) , Tname , price , length } Length = number of months it is valid (from the date when it was bought ) Find consultants born after some contract was already signed?

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Customer ={idC(PK), surname}

Contract ={idC(PK), customer, consultant, insurance_type, date}

Consultant   means:   id of some Staff member

Staff={idPerson(PK), surname,dob, boss, email}

Dob means: date of birth, boss:  is id of another Staff member  supervisor

Insurance_Type={idT(pk) , Tname , price , length }

Length = number of months it is valid  (from the date when it  was bought )

 

Find consultants born after some contract was already signed?

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