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ISYS1055 Database Concepts For Decomposition And Functional Dependency  

Pages : 3 | Type : Essay

Answer: Answer to Question 1: The candidate key for the doctor table is Rego. The candidate key for Patient Table is ID. The appointment table has candidate key, ID. The tables are already in third normal form. All the attributes in the database are atomic. Each of the tables has primary key. There is no non-functional dependency or transitive dependency. Answer to Question 2: Functional Dependency: The given custID has been presented as ...

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userWritten By : Mark     postPosted On : Jul 07, 2020     downloadDownload : 0
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ISYS1055 Database Concepts For Relational Schema And Relational Model  

Pages : 5 | Type : Essay

Answer:  Weakness of the given design:  It is not a normalized form Data redundancy occurred So it has insert, delete and update anomalies It occupies more memory space in database  Our Design  Relational Schema  Doctor (RegistrationNumber, DoctorName, Gender, Qualification, UniversityName, YearOfPassing) Patient (PatientID, PatientName, Gender, DOB, Address, City, PostCode, PhoneNumber) Appointment (Regist...

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userWritten By : Mark     postPosted On : Sep 11, 2020     downloadDownload : 0

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ISYS1055 Database Concepts  

Pages : 3 | Type : Essay

Answers 1. Figure 1: Relational Schema Mapping (Source: Created by Author) The candidate key (primary key) is defined within the doctor table is RegNo. The patientID is the candidate key of Patient table. The AppointmentID is the candidate key of appointment table. All the tables are presently in third normal form. In the figure 1 it has been shown that the tables do not have any dependency except than fully functional dependency. All th...

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userWritten By : Mark     postPosted On : Oct 07, 2020     downloadDownload : 0
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ISYS1055 Database Concepts  

Pages : 9 | Type : Essay

Answer: Trivial Functional Dependencies: Table Name Attributes Dependencies Author Email Name, Address, Telephone1, Telephone2, Telephone3 Publisher Name Address, URL, ABN WrittenBy Email, ISBN Title Book ISBN Title, Edition, Year, ListPrice, PublisherName StokedAt ISBN, Code StockQty ShoppingCart CartID Timest...

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userWritten By : Mark     postPosted On : Sep 27, 2021     downloadDownload : 0

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