Modern Database Management (12th Edition)
12th Edition
ISBN: 9780133544619
Author: Jeffrey A. Hoffer, Ramesh Venkataraman, Heikki Topi
Publisher: PEARSON
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Chapter 2, Problem 2.52PAE
Review your answer to Problem and Exercise 2-49 if necessary, Change the names of the entities, attributes, and relationships to conform to the naming guidelines presented in this chapter. Then, using the definition guidelines, write a definition for each entity, attribute, and relationship. If necessary, state assumptions so that each definition is as complete as possible
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Modify the Er diagram given below and add 5 to 6 more additions to it such as entities attributes relationships etc
The entity type STUDENT has the following attributes: Student Name, Address, Phone, Age, Activity, and No of Years. Activity represents some campus-based student activity, and No of Years represents the number of years the student has engaged in this activity. A given student may engage in more than one activity. Draw an ERD for this situation. What attribute or attributes did you designate as the identifier for the STUDENT entity? Why?
Using the relations ATTACHED, normalize your relations into first, second, and third normal forms.
First, KINDLY describe the changes required to your relations to meet the standard of the first 1NF and then 2NF and lastly 3NF.
Then, you should provide an Entity Relationship diagram that is in 3NF. All attributes, entities, keys, and relationships should be included and labelled.
Hint: Remember that in the hospital software system, the “Patient” relation includes the “medicines” attribute and the “Appointment” relation includes the “allergies” attribute. Allergies describe a list of any known allergies and medicines describe a list of medicines prescribed for a patient.
Please add:
Define or describe the changes required to get the relations into the 1st normal form.
Define or describe the changes required to get the relations into the 2nd normal form.
Include an Entity Relationship diagram in the 3rd normal form.
The primary and foreign keys, at a minimum, are defined for each…
Chapter 2 Solutions
Modern Database Management (12th Edition)
Ch. 2 - Define each of the following terms: entity type...Ch. 2 - Prob. 2.2RQCh. 2 - Contrast the following terms: stored attribute;...Ch. 2 - Prob. 2.4RQCh. 2 - Prob. 2.5RQCh. 2 - Prob. 2.6RQCh. 2 - State six general guidelines for naming data...Ch. 2 - Prob. 2.8RQCh. 2 - Prob. 2.9RQCh. 2 - State three conditions that suggest the designer...
Ch. 2 - List the four types of cardinality constraints,...Ch. 2 - Prob. 2.12RQCh. 2 - What is the degree of a relationship? List the...Ch. 2 - Give an example (Other than those described in...Ch. 2 - Give an example of each of the following, other...Ch. 2 - Give an example of the use of effective (or...Ch. 2 - State a rule that says when to extract an...Ch. 2 - Prob. 2.18RQCh. 2 - In addition to explaining what action is being...Ch. 2 - For the Manages relationship in Figure 2-12a,...Ch. 2 - Explain the distinction between entity type and...Ch. 2 - Why is it recommended that every ternary...Ch. 2 - A cellular operator needs a database to keep track...Ch. 2 - For each of the descriptions below, perform the...Ch. 2 - Answer the following questions concerning Figure...Ch. 2 - Prob. 2.26PAECh. 2 - You may have been assigned a CASE or a drawing...Ch. 2 - Consider the two E-R diagrams in Figure 2-25 Q,...Ch. 2 - The entity type STUDENT has the following...Ch. 2 - Are associative entities also weak entities? Why...Ch. 2 - Because Visio does not explicitly show associative...Ch. 2 - Figure 2-26 shows a grade report that is mailed to...Ch. 2 - Prob. 2.33PAECh. 2 - The Is Married To relationship in Figure 2-12a...Ch. 2 - Prob. 2.35PAECh. 2 - Figure 2-28 shows two diagrams (A and B), both of...Ch. 2 - Prob. 2.37PAECh. 2 - Review Figure 2-8LQ and Figure 2-22. Identify any...Ch. 2 - Prob. 2.39PAECh. 2 - Prob. 2.40PAECh. 2 - Prob. 2.41PAECh. 2 - Prob. 2.42PAECh. 2 - Prob. 2.43PAECh. 2 - Prob. 2.44PAECh. 2 - Prob. 2.45PAECh. 2 - Prob. 2.47PAECh. 2 - Prob. 2.48PAECh. 2 - Draw an ERD for the following situation. (State...Ch. 2 - Prob. 2.50PAECh. 2 - Prob. 2.51PAECh. 2 - Review your answer to Problem and Exercise 2-49 if...
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- Explain entity sets.arrow_forwardAll entity names, relationship names, and attribute definitions must be correct.arrow_forwardFor each of the following pairs of related entities, indicate whether (under typical circumstances) there is a one-tomany or a many-to-many relationship. Then, using the shorthand notation introduced in the text, draw a diagram for each of the relationships.a. STUDENT and COURSE (students register for courses)b. BOOK and BOOK COPY (books have copies)c. COURSE and SECTION (courses have sections)d. SECTION and ROOM (sections are scheduled in rooms)e. INSTRUCTOR and COURSEarrow_forward
- Based on Entity Relationship Diagram (ERD) below; a) Write the correct business rules for all entities. b) Write the suitable relationship name for (a) and (b). RESERVATION GUEST ROOM PK RSV_ID PK GUEST_ID RSV_DATE PK ROOM_ID GUEST_NAME ARRIVAL_DATE (b) ROOM_TYPE GUEST_PHONENO (a) DEPART_DATE ROOM_RATE GUEST_ADDRESS NO_OF_GUESTS FK1 RSV_ID NO_OF_ROOMS FK1 GUEST_IDarrow_forwardExplain the rules and style guidelines for creating entity relationship diagramarrow_forward13. What are the different types of relationship that can be established while constructing use case diagram? What is the conceptual difference between "include" and "extend" relationship in use case diagram? Explain.arrow_forward
- Draw an E-R diagram for each of the descriptions below. Q -An architectural design firm has a number of design projects underway at any point in time. Each of these projects is identified by a unique project identification code. Additional data stored for each project includes a description, a target completion date, and a dollar budget amount. Design associates staff these projects. These associates include architects, engineers, and computer CAD (Computer-Aided Design) specialists. Each associate is identified by a unique code. Other information about associates includes their name, specialty, their level. There are three levels of associates (gold, silver, and bronze). The bronze associates report to one and only one silver associate (who typically has at least one bronze associates reporting to her), and the silver associate reports to a gold associate in the same fashion. Each project staffed by at least one associate staff. It is also common to find any particular associate…arrow_forwardPlease draw an Entity-Relationship diagram for the given below MOVIE database. The data requirements are summarized as follows: Each movie is identified by title and year of release. Each movie has a length in minutes. Each has a production company, and each is classified under one or more genres (such as horror, action, drama, and so forth). Each movie has one or more directors and one or more actors appear in it. Each movie also has a plot outline. Finally, each movie has zero or more quotable quotes, each of which is spoken by a particular actor appearing in the movie. Actors are identified by name and date of birth and appear in one or more movies. Each actor has a role in the movie. Directors are also identified by name and date of birth and direct one or more movies. It is possible for a director to act in a movie (including one that he or she may also direct). Production companies are identified by name and each has an address. A production company produces one or more movies.arrow_forwardScenario – “Generate ERD of ERD” Task to do: i. Identify Entities with atleast 10 attributes per Entities.ii. Identify all relationship from the given Scenarioiii. Generate Entity Relationship Diagramarrow_forward
- Scenario – “Generate ERD of Use Case Diagram” Task to do: i. Identify Entities with atleast 10 attributes per Entities.ii. Identify all relationship from the given Scenarioiii. Generate Entity Relationship Diagramarrow_forwardWhen using subtype associations, talk about the database table choices that are accessible.Decide the design you want to employ and talk about the relevant issues.arrow_forwardWhen developing subtype associations, talk about the database table options.Discuss the factors that would influence your decision to choose one design over the others.arrow_forward
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