Software Engineering (10th Edition)
10th Edition
ISBN: 9780133943030
Author: Ian Sommerville
Publisher: PEARSON
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Chapter 24, Problem 24.8E
Explain why it is difficult to validate the relationships between internal product attributes, such as cyclomatic complexity, and external attributes, such as maintainability.
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Draw an Entity Relationship Diagram for the proposed system based on therequirements showing the Entities, Attributes and Cardinality between entities.
Entities and Attributes
Flavor
Attributes: FlavorID, Name, Description
Inventory
Attributes: InventoryID, FlavorID, Quantity, ReorderThreshold
Sale
Attributes: SaleID, CustomerID, FlavorID, Date, Quantity, TotalAmount
Customer
Attributes: CustomerID, Name, Email, Phone
Feedback
Attributes: FeedbackID, CustomerID, Comment, Date, Rating
Supplier
Attributes: SupplierID, Name, ContactInfo
Order
Attributes: OrderID, SupplierID, FlavorID, OrderDate, Quantity, DeliveryDate
Forecast
Attributes: ForecastID, FlavorID, PredictedDemand, Date
Relationships and Cardinality
Flavor - Inventory
One Flavor can have multiple inventory records. (1:N)
Flavor - Sale
One Flavor can be part of multiple sales. (1:N)
Customer - Sale
One Customer can have multiple sales. (1:N)
Customer - Feedback
One Customer can…
Draw an Entity Relationship Diagram (ERD) using Unified Modelling Language (UML) notation according to the below business rules. Your design should be at the logical level – include primary and foreign key fields and remember to remove any many-to-many relationships.
Business rules for hairdressers: 1. All entities should have surrogate primary keys. 2. Each hairdresser can work at multiple different salons over time, and every salon employs many different hairdressers. 3. The job title of a hairdresser at a specific salon must be stored in the database. 4. The name and surname of each hairdresser must be stored in the database. 5. The name of each salon must be stored in the database. 6. Every hairdresser is certified to have several different skills, and each skill can be mastered by many different hairdressers. 7. The name of each skill must be stored in the database. 8. The date that a specific hairdresser was certified to have a specific skill must be stored in the database.
Draw an Entity Relationship Diagram (ERD) using Unified Modelling Language (UML) notationaccording to the below business rules. Your design should be at the logical level – include primaryand foreign key fields and remember to remove any many-to-many relationships.Sheep farm feed supplier business rules:• All entities must have surrogate primary keys.• A contact person represents one or more suppliers, and each supplier has exactly onecontact person.• A supplier supplies many feed products, and every feed product can be supplied by manysuppliers.• Each feed product belongs to a specific feed type, and many feed products can have thesame feed type.
Chapter 24 Solutions
Software Engineering (10th Edition)
Ch. 24 - Explain why a high-quality software process should...Ch. 24 - Explain how standards may be used to capture...Ch. 24 - Discuss the assessment of software quality...Ch. 24 - Prob. 24.4ECh. 24 - Prob. 24.5ECh. 24 - Prob. 24.6ECh. 24 - Prob. 24.7ECh. 24 - Explain why it is difficult to validate the...Ch. 24 - Prob. 24.9ECh. 24 - A colleague who is a very good programmer produces...
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