Experiencing MIS
8th Edition
ISBN: 9780134792736
Author: KROENKE
Publisher: PEARSON
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Chapter 5, Problem 6CE
Modify the E-R model in Figure 5-17 to include a Contact entity that is related to the Facility entity. Create the relationship, and specify and justify the relationship’s cardinalities. For the definition of cardinality, see CE5.
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Draw this ER Diagram, but note that: Ths diagram should adhere to compressed Chen notation :
The ER diagram consists of four entities: Pet, Challenge, User, and Vote.
The Pet entity has attributes such as id (primary key), name, species, age, and description to store information about each pet profile.
The Challenge entity has attributes such as id (primary key), pet1_id and pet2_id (foreign keys referencing the Pet entity), start_date, end_date, and likes to store information about each challenge between two pets.
The User entity has attributes such as id (primary key), name, and email to store information about users who participate in voting and challenge creation.
The Vote entity has attributes such as id (primary key), challenge_id (foreign key referencing the Challenge entity), user_id (foreign key referencing the User entity), and vote to store information about user's vote for a particular challenge.
draw an E-R diagram that indicates the entity sets and their attributes. Identify and label significant relationship sets between pairs of entities, the degree of relationship sets and the cardinality and participation constraints.
Please include the eer diagram
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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- Please Design an Entity Diagram for the following Fictional Scenario using entities: SEASON, LEAGUE, DIVISION, CLUB and TEAM. Also, please show the relationship type and datatype. Thank You!arrow_forwardThe question is in the image below.arrow_forwardTo manage the materials of a factory, please give the E-R diagrams. Such entity sets are involved as below: Warehouse: with attributes as Number, area and telephone Accessory : with attributes as number, Name, Specification, price and description Supplier: with attributes as Number, name, address, telephone and асcount Project : with attributes as number and budget Employee : with attributes as number, name and agearrow_forward
- In your group, you will need to create an entity relation (E-R) diagram using the Crow's foot symbols that models the problem. This will include: Summarise the ERM's components, and names the entities and their relationship (As given in the Textbook, p.143, Table 4.4) all entities, relationships (including names) and attributes that are relevant, primary keys identified, and include relationship participation - participation (optional / mandatory) symbols and cardinality. The E-R diagram should be completed using the standards of this unit. Use Microsoft Visio to create the E-R diagram.arrow_forwardIBased on the given case scenario, you will need to create an entity relation (E-R) diagram using the Crow's foot symbols that models the problem. This will include: Summarise the ERM's components, and names the entities and their relationship all entities, relationships (including names) and attributes that are relevant, primary keys identified, and include relationship participation - participation (optional / mandatory) symbols and cardinality. Case Study The following business rules are provided from the description of operations: A customer may request many charter trips. Each charter trip is requested by only one customer. Some customers have not (yet) requested a charter trip. Every charter trip is requested by at least one customer. An employee may be assigned to serve as a crew member on many charter trips. Each charter trip may have many employees assigned to it to serve as crew members. An employee may not yet have been assigned to serve as a crew member on…arrow_forwardyou will need to create an entity relation (E-R) diagram using the Crow's foot symbols that models the problem. This will include: Summarise the ERM's components, and names the entities and their relationship (As given in Table) Table 4.4 Components of the ERM Entity Relationship Connectivity Entity SCHOOL operates 1:M DEPARTMENT DEPARTMENT has 1:M STUDENT DEPARTMENT employs 1:M PROFESSOR DEPARTMENT offers 1:M COURSE COURSE generates 1:M CLASS SEMESTER includes 1:M CLASS PROFESSOR is dean of 1:1 SCHOOL PROFESSOR chairs 1:1 DEPARTMENT PROFESSOR teaches 1:M CLASS PROFESSOR advises 1:M STUDENT STUDENT enrolls in M:N CLASS BUILDING contains 1:M ROOM ROOM is used for 1:M CLASS Note: ENROLL is the composite entity that implements the M:N relationship “STUDENT enrolls in CLASS.” all entities, relationships (including names), and…arrow_forward
- Draw an ER diagram for the airport database. Be sure to indicate the various attributes of each entity and relationship set; also specify the key and participation constraints for each relationships. Specify any necessary overlap and covering constraints The FAA passes a regulation that tests on a plane must be conducted by a technician whois an expert on that model. How would you express this constraint in the ER diagram? If you cannot express it, explain briefly.arrow_forwardDraw an Entity Relationship Diagram for ther following information.arrow_forwardWhat does cardinality indicate in an entity-relationship diagram? 1:The unique identification for which data is stored 2:The maximum number of entity instances for the connection 3:The total number of primary keys for an object. 4:The total number of features of an entityarrow_forward
- In an entity-relationship diagram, what does cardinality mean? 1:The data is saved concerning a single, individually identified element. 2:In a connection, the maximum number of entity instances 3:An entity's total number of primary keys 4:An entity's total amount of characteristicsarrow_forwardThe cardinality ratio depends on the real-world meaning of the entity types involved and is defined by the specific application. For the binary relationships below, suggest cardinality ratios based on common-sense meaning of the entity types. Clearly state any assumptions you make. Entity 1 Student Cardinality Ratio Entity 2 Course Item Class Teacher TextBook wwwwwwwwwww Order Instructorarrow_forwardPart 3: Denormalization – Pick one of the three common relationship types that often give an opportunity for denormalization (one-to-one; many-to-many with non-key attributes; reference data (1:N)), and make up a possible scenario that would fit it. Provide the normalized relations that represent your scenario. Now, show the resulting relation(s) if you were to denormalize what you provided above. Explain the advantages and disadvantages to what you did in (b). Or, if you were not able to denormalize, justify why it was not possible.arrow_forward
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