The figure below shows an ER schema for a university database. Map this ER schema into a relational schema by using the mapping algorithm discussed in the class. Specify all primary keys and foreign kevs, List the final relational database base schema. Please show your work. COffice Rank Office Name Name IPhone COLLEGE DEAN INSTRUCTOR (O,N) CStartDate (O,N) CHAIR ADMINS Name LName EMPLOYS ld Name (O,N) Addr Phone Major DCode DEPT HAS STUDENT DOffice (O,N) DPhone (O,N) (O,N) Grade HES OFFERS TAKES (5,N) COURSE SECS SECTION Credits (O,N) Sem CDesc Time Year Bldg Fgure aram for a UNIVERSITY database An ER diagram for a UNIVERSITY database schema.

The figure below shows an ER schema for a university database. Map this ER schema into a relational schema by using the mapping algorithm discussed in the class. Specify all primary keys and foreign kevs, List the final relational database base schema. Please show your work. COffice Rank Office Name Name IPhone COLLEGE DEAN INSTRUCTOR (O,N) CStartDate (O,N) CHAIR ADMINS Name LName EMPLOYS ld Name (O,N) Addr Phone Major DCode DEPT HAS STUDENT DOffice (O,N) DPhone (O,N) (O,N) Grade HES OFFERS TAKES (5,N) COURSE SECS SECTION Credits (O,N) Sem CDesc Time Year Bldg Fgure aram for a UNIVERSITY database An ER diagram for a UNIVERSITY database schema.

Database Systems: Design, Implementation, & Management

11th Edition

ISBN:9781285196145

Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel

Publisher:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel

Chapter10: Transaction Management And Concurrency Control

Section: Chapter Questions

Problem 1P

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Consider the following database in Prolog:birthday(tom).birthday(fred).birthday(helen),birthday(jack).happy(mary).happy(jane).happy(helen).happy(albert).attendparty(jane).attendparty(helen).hold_party(X): - birthday(X), happy(X) What would be the answer to the following query??- hold party(Who) a. Who = jane.b. Who = mary.c. Who = helen.d. All of the above.e. Who cannot be unified / instantiated.
Today almost every commercial database is based on O the hierarchical model O the linked-list model O the object-oriented model lists the relational model Given the relations: STUDENT (SID. StudentName, Major, AdvisorID) ADVISOR (AdvisorID, AdvisorName, Office, Phone) such that each student is assigned to one advisor, which of the following is true? O Major is a candidate key. O Phone is a candidate key. AdvisorName is a determinant. O AdvisorID is a foreign key. O SID is both a primary key and a foreign key.
The following is a relational schema for a database to document sharksightings for a research project. Primary keys are underlined. ForeignKeys are identified by FK, and their name indicates the attribute that theyreference.________________________________________________________________Sharks(shark_id:Integer, name:String, species_name:String,tagged_by_mission_id:Integer (FK))Sightings(shark_id:Integer (FK), sighting_num:Integer,sight_time:Timestamp, lat:Real, lng:Real, ocean:String, mission_id:Integer(FK))Missions(mission_id:Integer, start_date:Date, end_date:Date,vessel_id:Integer (FK))ResearchVessels(vessel_id:Integer, name:String)________________________________________________________________Sharks identified by a unique id, have a name which is not necessarilyunique, and a scientific species name.All Sharks are tagged and are sighted by Research Vessels, which areresearch ships that go on research Missions throughout the year. EachMission has a start and end date. Shark…
We have the following functional dependency A -> B. The following is a well-formed database design. MYTABLE (TheKey, A, B, C) True False
Let us consider the following relational database. Students(stuID, lastName, firstName, major, gpa) Faculty(facID, name, deptName, rank) Classes(classNhmber, facID, schedule, room) Enrolls(stuID, classNumber, grade) The primary keys are underlined. The referential integrity constraints are as follows: The column facID of relation Classes that references table Faculty, The column of stuID of relation Enrolls that references table Students, and The column classNumber of relation Enrolls that references table Classes. The following SQL statement is intended to define the table Students. However, this statement does not work correctly. CREAT TABLE Students( lastName VARCHAR(20), firstName VARCHAR(20), major VARCHAR(40) gpa DECIMAL(3,2), PRIMARY KEY(stuID)); However, this statement does not work correctly. Briefly explain why and list the corrected SQL statement.
Following on your BIG break to make a database for an… organization that organizes table tennis tournaments (also known as “Tourney”s) at their premises on behalf of clubs, you’ve written down the business rules as follows: One Match belongs to One Tourney, and not none. One Tourney has Many Matches, at least one and a maximum of 128. One Match takes place on One Table, and not none. One Table is used in Many Matches, and possibly none. One Match belongs to one Category, and not none. One Category appears in Many Matches, and possibly none and a max of 32. One Match involves Many Players, minimum 2 and maximum 4. One Player plays Many Matches, and possibly none. You have also been given a small sample of their records (which is not in the least in relational format), which may prove useful. It is below. Match Number Tourney Tourney Start Date Day Time Slot In Day Player Names(Team 1) Player Names(Team 2) Player IDs (Team 1) Player IDs(Team 2)…
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By given the following models and database context classes, answer the following questions or complete the missing codes: using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.ComponentModel.DataAnnotations.Schema; using System.ComponentModel.DataAnnotations; namespace UniversityAssociationMvc.Models { public class Student { public int StudentID { get; set; } public string LastName { get; set; } public string FirstName { get; set; } public string Phone { get; set; } public string Email { get; set; } public DateTime RegistrationDate { get; set; } public virtual ICollection<Membership> Memberships { get; set; } } } using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.ComponentModel.DataAnnotations; namespace UniversityAssociationMvc.Models { public class Club { public int ClubID { get; set;…
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Suppose that you are a manufacturer of product ABC, which is composed of parts A, B, and C. Each time a new product ABC is created, it must be added to the product inventory, using the PROD_QOH in a table named PRODUCT. Also, each time the product is created, the parts inventory, using PART_QOH in a table named PART, must be reduced by one each of parts A, B, and C. The sample database contents are shown in Table P10.1. Given the preceding information, answer Questions a through e. How many database requests can you identify for an inventory update for both PRODUCT and PART? Using SQL, write each database request you identified in Step a. Write the complete transaction(s). Write the transaction log, using Table 10.1 as your template. Using the transaction log you created in Step d, trace its use in database recovery.

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