Homework Answers
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Which of the following statement is correct?
C. Both cardinality and participation are correct
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Consider this Entity-Relationship model, drawn for the following business rules. • A route is uniquely identified...
Q1.a) Based on the business rules, you are expected to construct an Entity-Relationship (ER) diagram. The...
Q1.a) Based on the business rules, you are expected to construct
an Entity-Relationship (ER) diagram. The ER diagram should include
entities, attributes (if there are less than three specified in the
business statements, please add some extra attributes), identifiers
and corresponding data types, the relationships among entities with
cardinality and associative entities.
.b) Extend Q1.a) to apply generalization/specialization
technique to construct an Enhanced-ER (EER) diagram. The EER
diagram should specify the complete (total) and disjoint
(mutuallyexclusive) constraints on the
generalization/specialization....
Create an Entity-Relationship Diagram (ERD). In the ERD include the following:
Create an Entity-Relationship Diagram (ERD).In the ERD include the following: entities primary keys for all entities attributes - use "good" names for attributes, use only single-valued attributes relationships - use Crow's foot or UML notation; name relationships that could be ambiguous cardinality - minimum (optional/mandatory) and maximum (one or many) on both ends of the relationship - use reasonable assumptions if there is insufficient information in the descriptionStudent/Course registration system for a universityStudents have a unique identification number, first name, middle initial, last name, year...
Database 1. Draw an Entity-Relationship diagram(including cardinality ratio and participa- tion constraint) to represent the following...
Database
1. Draw an Entity-Relationship diagram(including cardinality ratio and participa- tion constraint) to represent the following application: A DEPARTMENT has a number of TEACHERS and each TEACHER is affil- iated only with one DEPARTMENT; A STUDENT has only one TEACHER as an advisor, but a TEACHER can advise many STUDENT; on the other hand, TEACHER instructs many STUDENTS, and a STUDENT has a number of instructors. Different AGENCIES support different TEACHERS for various PROJECTS. (15 points) A trucking company is...
Using data from the Southwest case, create a chart that plots the relationship between each airline’s...
Using data from the Southwest case, create a chart that plots
the relationship between each airline’s market share, in terms of
revenue or airline seat miles flown, and its profitability for two
periods: 1995-2000 and 2001-2005. Does your analysis suggest that
market share is correlated with profitability in this industry? If
you exclude Southwest Airlines and Jet Blue airlines from the
analysis (companies that use “point-to-point” route structure
rather than a “hub and spoke” route structure), how well does
market...
How can we assess whether a project is a success or a failure? This case presents...
How can we assess whether a project is a success or a
failure?
This case presents two phases of a large business transformation project involving the implementation of an ERP system with the aim of creating an integrated company. The case illustrates some of the challenges associated with integration. It also presents the obstacles facing companies that undertake projects involving large information technology projects. Bombardier and Its Environment Joseph-Armand Bombardier was 15 years old when he built his first snowmobile...
Q1.a) Based on the business rules, you are expected to construct
an Entity-Relationship (ER) diagram. The ER diagram should include
entities, attributes (if there are less than three specified in the
business statements, please add some extra attributes), identifiers
and corresponding data types, the relationships among entities with
cardinality and associative entities.
.b) Extend Q1.a) to apply generalization/specialization
technique to construct an Enhanced-ER (EER) diagram. The EER
diagram should specify the complete (total) and disjoint
(mutuallyexclusive) constraints on the
generalization/specialization....
Database
1. Draw an Entity-Relationship diagram(including cardinality ratio and participa- tion constraint) to represent the following application: A DEPARTMENT has a number of TEACHERS and each TEACHER is affil- iated only with one DEPARTMENT; A STUDENT has only one TEACHER as an advisor, but a TEACHER can advise many STUDENT; on the other hand, TEACHER instructs many STUDENTS, and a STUDENT has a number of instructors. Different AGENCIES support different TEACHERS for various PROJECTS. (15 points) A trucking company is...
Using data from the Southwest case, create a chart that plots
the relationship between each airline’s market share, in terms of
revenue or airline seat miles flown, and its profitability for two
periods: 1995-2000 and 2001-2005. Does your analysis suggest that
market share is correlated with profitability in this industry? If
you exclude Southwest Airlines and Jet Blue airlines from the
analysis (companies that use “point-to-point” route structure
rather than a “hub and spoke” route structure), how well does
market...
How can we assess whether a project is a success or a
failure?
This case presents two phases of a large business transformation project involving the implementation of an ERP system with the aim of creating an integrated company. The case illustrates some of the challenges associated with integration. It also presents the obstacles facing companies that undertake projects involving large information technology projects. Bombardier and Its Environment Joseph-Armand Bombardier was 15 years old when he built his first snowmobile...
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