8. The dependency diagram in Figure Q6.8 indicates that a patient can receive many prescriptions for one or more medicines over time. Based on the dependency dia- gram, create a database whose tables are in at least 2NF, showing the dependency diagram for each table. E Q6.8 PRESCRIPTION DEPENDENCY DIAGRAM MedName PatientID Date RefillsAllowed PatientName Dosage ShelfLife 9. What is a partial dependency? With what normal form is it associated? 10. What three data anomalies are likely to be the result of data redundancy? How can such anomalies be eliminated? 11. Define and discuss the concept of transitive dependency. 12. What is a surrogate key, and when should you use one? 13. Why is a table whose primary key consists of a single attribute automatically in 2NF when it is in 1NF? 14. How would you describe a condition in which one attribute is dependent on another attribute when neither attribute is part of the primary key?

8. The dependency diagram in Figure Q6.8 indicates that a patient can receive many prescriptions for one or more medicines over time. Based on the dependency dia- gram, create a database whose tables are in at least 2NF, showing the dependency diagram for each table. E Q6.8 PRESCRIPTION DEPENDENCY DIAGRAM MedName PatientID Date RefillsAllowed PatientName Dosage ShelfLife 9. What is a partial dependency? With what normal form is it associated? 10. What three data anomalies are likely to be the result of data redundancy? How can such anomalies be eliminated? 11. Define and discuss the concept of transitive dependency. 12. What is a surrogate key, and when should you use one? 13. Why is a table whose primary key consists of a single attribute automatically in 2NF when it is in 1NF? 14. How would you describe a condition in which one attribute is dependent on another attribute when neither attribute is part of the primary key?

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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The dependency diagram in Figure Q6.8 indicates that a patient can receive many prescriptions for one or more medicines over time. Based on the dependency diagram, create a database whose tables are in at least 2NF, showing the dependency diagram for each table.
The dependency diagram in Figure Q6.8 indicates that a patient can receive many prescriptions for one or more medicines over time. Based on the dependency diagram, create a database whose tables are in at least 2NF, showing the dependency diagram for each table. Figure Q6.8 Prescription dependency diagram MedName PatientID Date RefillsAllowed PatientName Dosage ShelfLife
The dependency diagram below indicates that authors are paid royalties foreach book that they write for a publisher. The amount of the royalty can vary by author,by book, and by edition of the book.Based on the dependency diagram, create a database whose tables are at least in 2NF,showing the dependency diagram for each table.
The dependency diagram in Figure Q6.8 indicates that a patient can receive many prescriptions for one or more medicines over time. Based on the dependency diagram, create a database whose tables are in at least 2NF, showing the dependency diagram for each table.FIGURE Q6.8 PRESCRIPTION DEPENDENCY DIAGRAM
Let the database has two relations P(a, b) and Q(m, a, n) in which a is the primary key of the relation P and m is the primary key of the relation Q. Instance of P has 70 Tuples and Instance of Q has 42. What is the maximum number of rows in the new instance produced by P Q? ( is natural join)
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Given the following relation R and its functional dependencies: R(workerNumber, repairNumber, workerName, machineNumber, spentTime, repairDate, machineName, workshopNumber, workshopName ) workerNumber à workerName repairNumber à repairDate, machineNumber machineNumber à machineName, workshopNumber workshopNumber à workshopName Explain the types of all the dependencies in the relation R. Create a database whose tables are at least in 3NF, showing the dependency diagrams for each table.
Create a database whose tables are at least in 2NF, showing the dependency diagrams for each table.
Given the following relation R and its functional dependencies: R(workerNumber, repairNumber, workerName, machineNumber, spentTime, repairDate, machineName, workshopNumber, workshopName ) workerNumber à workerName repairNumber à repairDate, machineNumber machineNumber à machineName, workshopNumber workshopNumber à workshopName 1)Create a database whose tables are at least in 3NF, showing the dependency diagrams for each table
The dependency diagram indicates that authors are paid royalty for each book they write for a publisher.The amount of royalty can vary by author,by book ,and by edition of the book. a.Based on the dependency diagram,create a database whose tables are atleast in 2NF showing the dependency diagram for each table. b.Create a database whose tables are atleast in 3NF,showing the dependency diagram for each table.
Normalize the given database to 3NF (3rd normal form). Show all the dependencies: Fully, Partial dependency, and transitive dependencies. Draw the normalized database.
Below given relations of a database are in First Normal Form (1* NF). Decompose (Split) the relations to Normalize in 2NF and 3NF. tbl_Project Project Code Project Name Project Manager Budget PC010 Reservation System Mr. Said HR System Attendance System Mr. Rajesh 25000 PC011 MS. Malak 32000 PC012 19000 tbl_Emp_Dept Project Code Emp No Emp Name Dept No Dept Name Hourly Pay PC010 S100 Ali Mohd. D03 Database 7.500 PC010 S101 Hamood D02 Testing 5.500 PC010 S102 Riyaz D01 IT 8.200 PC011 S103 Pavan D03 Database 6.500 PC011 S104 Basma D02 Testing 5.400 PC011 S115 Asaad D01 IT 7.900 PC012 S137 Fathima D03 Database 6.200 PC012 S218 Avinash D02 Testing 6.100 PC012 S109 Роja D01 IT 9.300

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