Bundle: Database Systems Design, Implementation, & Management, Loose-leaf Version, 13th + MindTapV2.0, 1 term Printed Access Card
13th Edition
ISBN: 9780357475188
Author: Coronel, Carlos, Morris, Steven
Publisher: Cengage Learning
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Chapter 5, Problem 2RQ
What kinds of data would you store in an entity subtype?
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Explain entity sets.
An attribute is a property that describes the nature of an entity.
An attribute is a descriptive property of an entity.
Chapter 5 Solutions
Bundle: Database Systems Design, Implementation, & Management, Loose-leaf Version, 13th + MindTapV2.0, 1 term Printed Access Card
Ch. 5 - Prob. 1RQCh. 5 - What kinds of data would you store in an entity...Ch. 5 - Prob. 3RQCh. 5 - What is a subtype discriminator? Give an example...Ch. 5 - Prob. 5RQCh. 5 - What is a disjoint subtype? Give an example.Ch. 5 - What is the difference between partial...Ch. 5 - Prob. 8RQCh. 5 - According to the data model, is it required that...Ch. 5 - Prob. 10RQ
Ch. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - Prob. 14RQCh. 5 - When implementing a 1:1 relationship, where should...Ch. 5 - What is time-variant data, and how would you deal...Ch. 5 - Prob. 17RQCh. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - Prob. 7PCh. 5 - Prob. 8CCh. 5 - Prob. 9CCh. 5 - Prob. 10C
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- What considerations should be taken into account when deciding on the data type for an attribute?arrow_forwardConditions that signal to the database designer that supertype and subtype relationships should be used are described.arrow_forwardExplain the Entity-Relationship model and its use in a database.arrow_forward
- Computer Science After completing a course in database management, you have been hired as a summer intern by Mountain View Community Hospital. Your first assignment is to work as part of a team of three people to develop a high-level E-R diagram for the hospital. You conduct interviews with a number of hospital administrators and staff to identify the key entity types for the hospital. As a result, your team has identified the following entity types: • CARE CENTER—a treatment center within the hospital. Examples of care centers are maternity, emergency care, or multiple sclerosis center. Each care center has a care center ID (identifier) and a care center name. • PATIENT—a person who is either admitted to the hospital or is registered as an outpatient. Each patient has an identifier, the medical record number (MRN), and a name. The hospital also records the date of first contact with the hospital (Contact Date) • PHYSICIAN—a member of the hospital medical staff who may admit patients…arrow_forwardWhat choices must be made in order to create a field specification?arrow_forwardUsing a graphics program, develop an entity-relationship diagram for a database application for an Internet bookstore where students buy textbooks from a salesperson and receive invoices for their purchases. Use Figure 5.5 as a guide.arrow_forward
- A new sales ordering system needs a relational database that contains a customer table, a product inventory table, and an order table. Use a word-processing, graphics, or spread-sheet program to draw an entity-relationship diagram showing the relationships among these entities. Next, design each of these tables showing the keys and attributes to be included in each table. Include five sample records for each table.arrow_forwardIn the hierarchy of data, what is the difference between a data attribute and a data item? What is the domain of an attribute?arrow_forwardWhat is a relation?arrow_forward
- Please draw the logical database design for the following Entity Relationship Diagram for the branches of a bank:arrow_forwardDraw the logical database design for the following Entity Relationship Diagram for the branches of a bank:arrow_forwardERD (Entity-Relationship Diagram) Explanation: The ERD is a high-level representation of the data relationships in the ConfPlus Conference Management System. It shows the main entities, their attributes, and the relationships between them. Entities: User: Represents a user in the system, including authors, reviewers, and organizers. Attributes include UserID, Name, Email, Password, Affiliation, and Role. Paper: Represents an academic paper submitted to the conference. Attributes include PaperID, Title, Abstract, PDF, and SubmissionDate. Authorship: Represents the relationship between a User (author) and a Paper. Attributes include AuthorshipID, UserID, PaperID, and IsPresenter (to indicate if the author is the presenter of the paper). Review: Represents a review assigned to a paper by a User (reviewer). Attributes include ReviewID, UserID, PaperID, OverallEvaluation, Contribution, Strengths, Weaknesses, and ReviewDate. Conference: Represents the conference itself. Attributes include…arrow_forward
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