Experiencing MIS
8th Edition
ISBN: 9780134792736
Author: KROENKE
Publisher: PEARSON
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Chapter 5, Problem 4CE
Study Figure 5-17 to understand the entities and their relationships. Justify each of the cardinalities in this model. For the definition of cardinality, see CE5.
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Consider the generalization and specialization lattice structure below (attributes not shown). Explain how characteristics are inherited from higher-level entity sets X and Y for entity sets A, B, and C. Discuss how to handle a situation in which an X attribute has the same name as a Y attribute.
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Chapter 5 Solutions
Experiencing MIS
Ch. 5.3 - Prob. 1SWCh. 5.3 - Prob. 2SWCh. 5.3 - Prob. 3SWCh. 5.3 - Prob. 4SWCh. 5 - Prob. 1EGDQCh. 5 - Prob. 2EGDQCh. 5 - Prob. 3EGDQCh. 5 - Prob. 4EGDQCh. 5 - Prob. 5EGDQCh. 5 - Prob. 6EGDQ
Ch. 5 - Prob. 7EGDQCh. 5 - Consider the adage Never ask a question for which...Ch. 5 - Prob. 1ARQCh. 5 - Prob. 2ARQCh. 5 - Prob. 3ARQCh. 5 - Prob. 4ARQCh. 5 - Prob. 5ARQCh. 5 - Prob. 6ARQCh. 5 - Prob. 1UYKCh. 5 - Prob. 2UYKCh. 5 - Prob. 3UYKCh. 5 - Study Figure 5-17 to understand the entities and...Ch. 5 - Working with your team, develop a list of seven...Ch. 5 - Modify the E-R model in Figure 5-17 to include a...Ch. 5 - Discuss the advantages and disadvantages of the...Ch. 5 - Transform the data model in Figure 5-17 into a...Ch. 5 - Prob. 9CECh. 5 - Fill your database with sample data. Because you...Ch. 5 - Prob. 11CECh. 5 - Prob. 12CSCh. 5 - Prob. 13CSCh. 5 - Prob. 14CSCh. 5 - Prob. 15CSCh. 5 - Prob. 16CSCh. 5 - Prob. 17CSCh. 5 - Prob. 18CSCh. 5 - Prob. 19MMLCh. 5 - Prob. 20MLM
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- What are the principles for deciding how to identify and construct connections between entities in the ER-Model?arrow_forwardDescribe how functional dependencies may be used to show: • There is a many-to-one connection set between the entity sets student and instructor, as well as a one-to-one relationship set between the two.arrow_forwardWhat does an associative entity model? a.) Associative entities model pure relationships rather than entities. b.) Associative entities model entities that are independent. c.) Associative entities model the real-world scenarios of ways to look up data. d.) Associative entities model attributes and how they are linked to entities.arrow_forward
- Perform given tasks on Case study Q-Find entity Attribute and primary key, also draw Entity diagram? Case study: In a college we have students, department, teachers and courses. A student has name registration No and address. A teacher has name NIC and qualification. A department is known by its name e.g. CSIT, and have a HOD name , Num of students and Floor No. A course is identified by its Code. Course also has name and level of degree. A student must enroll (roll no and Semester as relationship attribute) in any one department. A department can have many students. The teacher is assigned class (time and day as attribute) in more than one department. A department has many teachers. A student can study up-to 5 courses by a teacher in given classroom number.arrow_forwardWhat is the purpose of entity-relationship diagrams? What sort of symbol is used to depict a connection, and how does it work? What exactly does the phrase "associative entity" imply and what does it mean? Give an example.arrow_forwardDescribe how functional dependencies may be used to denote the following:• The entity sets student and teacher have a one-to-one relationship set.• There is a many-to-one connection set between the entity sets student and teacher.arrow_forward
- Explain how functional dependencies can be used to indicate the following:• A one-to-one relationship set exists between entity sets student and instructor.• Amany-to-one relationship set exists between entity sets student and instructor.arrow_forwardConsider an E-R diagram containing 2 strong entities A and B. The cardinality ratio between the two entities is M:N and one entity contains a multi-valued attribute. What is the minimum number of tables required to represent the above scenario? a. 3 b. 4 c. 5 d. 6arrow_forwardUsing the above table structure, create a normalized Entity-Relationship Model (ERM). Identify Primary Key(s) and Foreign Key(s) for all the entities, connectivities and/or cardinalities, and relationships between the entities. As for Chen's ERM notation and the normalization, the level should be in Third Normal Form (3NF) and above. [Note: you do notneed to show the normalization process such as the functional dependency diagram.]arrow_forward
- Using the above table structure, create a normalized Entity-Relationship Model (ERM). Identify Primary Key(s) and Foreign Key(s) for all the entities, connectivities and/or cardinalities, and relationships between the entities. As for Chen's ERM notation and the normalization, the level should be in Third Normal Form (3NF) and above. [Note: you do notneed to show the normalization process such as the functional dependency diagram.]arrow_forwardEvery flimsy entity set may be strengthened by the addition of pertinent characteristics. What therefore, is the cause of our subpar entity sets?arrow_forwardSpecifically, on which side of a many-to-one connection does the primary key of one entity function as a foreign key? There is a huge number of relationships specified on one side of the diagram. both from the inside and the outside It is possible to define two relationships at the same time. On the one hand, one connection is defined; on the other, another relationship is defined.arrow_forward
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