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TSERVICE DRIVER ID1 ID2 dlnumber enumber first-name last-name phone [0.. ] BUS departure-city destination-city departure-time arrival time ID ID ID rego make Assigned-to > 1 - Assigned-to date-when-assigned ID 1... snumber Passes-through v 0..1 date-when-dis charged STOP stop-city departure-time arrival-time Your task is to perform a step of logical database design, i.e. to transform a conceptual schema given above into a collection of relational schemas. For each relational schema clearly list the names of attributes, primary key, candidate keys (if any), and foreign keys (if any). Assume, that a superset method must be used to implome

TSERVICE DRIVER ID1 ID2 dlnumber enumber first-name last-name phone [0.. ] BUS departure-city destination-city departure-time arrival time ID ID ID rego make Assigned-to > 1 - Assigned-to date-when-assigned ID 1... snumber Passes-through v 0..1 date-when-dis charged STOP stop-city departure-time arrival-time Your task is to perform a step of logical database design, i.e. to transform a conceptual schema given above into a collection of relational schemas. For each relational schema clearly list the names of attributes, primary key, candidate keys (if any), and foreign keys (if any). Assume, that a superset method must be used to implome

Computer Networking: A Top-Down Approach (7th Edition)
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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Consider a conceptual schema given below. LONGER TSERVICE SHORTER TSERVICE total-days total-hours DRIVER TSERVICE dlnumber enumber first-name last-name phone[e..] ID1 ID2 BUS departure-city destination-city departure-time arrival time ID ID ID Assigned-to - - Assigned-to date-when-assigned ID rego make 1..* snumber Passes-through 0..1 date-when-discharged STOP stop-City edap larrival-time Your task is to perform a step of logical database design, i.e. to transform a conceptual schema given above into a collection of relational schemas. For each relational schema clearly list the names of attributes, primary key, candidate keys (if any), and foreign keys (if any). Assume, that a superset method must be used to implement a generalization. T0
Transcribed Image Text:Consider a conceptual schema given below. LONGER TSERVICE SHORTER TSERVICE total-days total-hours DRIVER TSERVICE dlnumber enumber first-name last-name phone[e..] ID1 ID2 BUS departure-city destination-city departure-time arrival time ID ID ID Assigned-to - - Assigned-to date-when-assigned ID rego make 1..* snumber Passes-through 0..1 date-when-discharged STOP stop-City edap larrival-time Your task is to perform a step of logical database design, i.e. to transform a conceptual schema given above into a collection of relational schemas. For each relational schema clearly list the names of attributes, primary key, candidate keys (if any), and foreign keys (if any). Assume, that a superset method must be used to implement a generalization. T0
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