Principles of Information Systems, Loose-Leaf Version
13th Edition
ISBN: 9781305971820
Author: Ralph Stair, George Reynolds
Publisher: Course Technology
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 5, Problem 1PSE
Program Plan Intro
Data Model:
Data modeling is the process of creating the model for the data entities involved in the business system and their relationship between them.
- Entities may represent the physical object, event, or concept.
- An attribute is a property of an entity.
- Relationship denotes the link between the entities.
- Cardinality represents the relationship between entities through three relationships such as,
- 1:1 (one to one)
- 1:N (one to many)
- M:N (many to many)
Entity relationship diagram:
The entity-relationship diagram is a graphical demonstration of entity-relationship model.
- A logical representation of business data for a business area is the entity-relationship model (E-R model).
- In the business environment, the E-R model is expressed in terms of entities and relationships between the entities.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
What are the main differences between data items and data attributes in the data hierarchy? How does an attribute have scope?
The management of major-related data is something your department is interested in. Create a data structure that will keep your department's important information current. Of course, the majors list needs to be arranged by last name (and then by first, if there are multiple students with the same last name).
Explain the concept of data redundancy and how it can be minimized in a well-designed data model.
Chapter 5 Solutions
Principles of Information Systems, Loose-Leaf Version
Ch. 5.1 - Prob. 1RQCh. 5.1 - Which attribute would you designate as the primary...Ch. 5.1 - Prob. 1CTQCh. 5.1 - Prob. 2CTQCh. 5.2 - Prob. 1RQCh. 5.2 - Prob. 2RQCh. 5.2 - Prob. 1CTQCh. 5.2 - Prob. 2CTQCh. 5.3 - Prob. 1RQCh. 5.3 - Prob. 2RQ
Ch. 5.3 - What additional questions need to be answered...Ch. 5.3 - Prob. 2CTQCh. 5.4 - Prob. 1RQCh. 5.4 - Telefonica Brasil is one of the largest...Ch. 5.4 - Prob. 1CTQCh. 5.4 - Prob. 2CTQCh. 5.5 - Prob. 1RQCh. 5.5 - Prob. 2RQCh. 5.5 - Why is it unlikely that a traditional SQL database...Ch. 5.5 - Prob. 2CTQCh. 5 - Prob. 1SATCh. 5 - Prob. 2SATCh. 5 - Prob. 3SATCh. 5 - The ______________ model is a simple but highly...Ch. 5 - The ability to combine two or more tables through...Ch. 5 - Prob. 6SATCh. 5 - Prob. 7SATCh. 5 - Prob. 8SATCh. 5 - Prob. 9SATCh. 5 - Prob. 10SATCh. 5 - Prob. 11SATCh. 5 - Prob. 12SATCh. 5 - Prob. 13SATCh. 5 - Prob. 14SATCh. 5 - Prob. 15SATCh. 5 - Prob. 16SATCh. 5 - Prob. 1RQCh. 5 - In the hierarchy of data, what is the difference...Ch. 5 - Prob. 3RQCh. 5 - What is meant by data archiving? Why is this an...Ch. 5 - What is an entity-relationship diagram, and what...Ch. 5 - Identify four basic data manipulations performed...Ch. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 9RQCh. 5 - Prob. 10RQCh. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - Prob. 14RQCh. 5 - Prob. 15RQCh. 5 - Prob. 16RQCh. 5 - Prob. 17RQCh. 5 - Prob. 1DQCh. 5 - Outline some specific steps an organization might...Ch. 5 - SQL databases conform to ACID properties. Briefly...Ch. 5 - Prob. 4DQCh. 5 - Prob. 6DQCh. 5 - Prob. 8DQCh. 5 - Prob. 1PSECh. 5 - Describe the role of a database administrator....Ch. 5 - Prob. 2CECh. 5 - Prob. 1CTQ1Ch. 5 - Prob. 2CTQ1Ch. 5 - Prob. 3CTQ1Ch. 5 - Prob. 1CTQ2Ch. 5 - Prob. 2CTQ2Ch. 5 - Prob. 3CTQ2
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- In the hierarchy of data, what is the difference between a data attribute and a data item? What is the domain of an attribute?arrow_forwardTo begin, what are the key distinctions between developing a data model from scratch and using one that has already been pre-packaged?arrow_forwardWhat are the advantages of using the same data model for both conceptual and logical design over using two different models? For example, E-R and relational database models….arrow_forward
- In the context of the data hierarchy, what are the key distinctions between a data item and a data attribute? What does it mean for an attribute to have a scope?arrow_forwardWhat are the main differences between a data item and a data attribute in terms of the data hierarchy? What does it mean for an attribute to have a scope?arrow_forwardIn the process of designing databases, are you able to explain why a data model is required?arrow_forward
- Where do data items and data attributes differ most from one another in the data hierarchy? Just what does it imply when an attribute is said to be "scoped?"arrow_forwardDefine the concept of program-data independence and explain how it is achieved in the database approach.arrow_forwardWhat is the primary difference between developing a data model from scratch and using an existing one?arrow_forward
- Structural and data independence: what's the difference?arrow_forwardWhat are the benefits of utilizing the same data model for both conceptual and logical design as opposed to having two distinct models for each? E-R and relational database models, for instance...arrow_forwardHow does the choice of data modeling approach (e.g., relational, NoSQL) impact database design?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Information Systems (MindTap Course...Computer ScienceISBN:9781305971776Author:Ralph Stair, George ReynoldsPublisher:Cengage Learning
Principles of Information Systems (MindTap Course...
Computer Science
ISBN:9781305971776
Author:Ralph Stair, George Reynolds
Publisher:Cengage Learning