A relation FarmVisit is defined below with attributes in the table headings.FarmVisitvisitorIDvisitorNamedatefarmIDfarmNamet1H001John1 Feb 2021A10Green Fieldt2Н005Ashley1 Jan 2021A10Green Fieldt3но05Ashley1 Feb 2021A10Green Fieldt4H005Ashley15 Apr 2021H02Есоt5Но06Ashley15 Apr 2021A11Green Fielda) Write down examples of tuples (i.e., tl, t2) to show neither of the following is a functionaldependency:(i)visitorID -> date(ii)date -> farmIDb) Write down the functional dependency (FDs) using the above data, which can represent allpossible data. The FDs should be non-trivial and the determinants of the FDs should containminimal number of attributes required.c) Using the tuples given, can (visitorID, farmID) be the primary key of FarmVisit? Explain why.d) What the highest normal form by which the FarmVisit relation can be classified? Explainwhy.

answers for all the subsections is given below.

A relation FarmVisit is defined below with attributes in the table headings. FarmVisit visitorID visitorName date farmID farmName t1 H001 John 1 Feb 2021 A10 Green Field t2 H005 Ashley 1 Jan 2021 A10 Green Field t3 1 Feb 2021 Ashley Ashley Ashley H005 Α10 Green Field t4 H005 15 Apr 2021 H02 Есо t5 но06 15 Apr 2021 All Green Field

A relation FarmVisit is defined below with attributes in the table headings. FarmVisit visitorID visitorName date farmID farmName t1 H001 John 1 Feb 2021 A10 Green Field t2 H005 Ashley 1 Jan 2021 A10 Green Field t3 1 Feb 2021 Ashley Ashley Ashley H005 Α10 Green Field t4 H005 15 Apr 2021 H02 Есо t5 но06 15 Apr 2021 All Green Field

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

a class list for Millennium College. Convert this user view to a set of 3NF relations using an enterprise key. Assume the following:• An instructor has a unique location.• A student has a unique major.• A course has a unique title.
1. Consider the following relations:Student (snum: integer, sname: string, major: string, level: string, age: integer)Class (name: string, meets at: string, room: string, fid: integer)Enrolled (snum: integer, cname: string)Faculty (fid: integer, fname: string, deptid: integer)The meaning of these relations is straightforward; for example, Enrolled has onerecord per student-class pair such that the student is enrolled in the class. Level is atwo character code with 4 different values (example: Junior: A Level etc)Write the following queries in SQL. No duplicates should be printed in any of theanswers.i. Find the names of all Juniors (level = A Level) who are enrolled in a classtaught by Prof. Kwizeraii. ii. Find the names of all classes that either meet in room R128 or have five ormore Students enrolled.iii. Find the names of all students who are enrolled in two classes that meet atthe same time.
Question 17 Which of the following is another term for a recursive relationship? Group of answer choices ternary relationship binary relationship supertype relationship subtype relationship unary relationship
The properties of the relation object can be used to implement the master-detail functionality which most appropriate for your application. You can delete a master-detail relation by selecting it in the Object Navigator and choosing Navigator => Delete. Discuss the Deletion of Relations in detail.
Consider a relation named as BOOK that contains data about the books in a library. BOOK relation was initially created with the attributes BookID (an id that library assigns), ISBN, CopyNr (used to differentiate copies of the same book), Title, PublYear, Author, and AuthorBornYear. Primary key: BookID, CopyNr and Author Candidate key: ISBN, CopyNr and Author Below you see dependencies of attributes: Dependency 1 (D1): ISBN, Title, PublYear, AuthorBornYear were dependent on BookID, CopyNr and Author Dependency 2 (D2): Title and PublYear were dependent on BookID, CopyNr Dependency 3 (D3): AuthorBornYear was dependent on Author First determine which normal form (1NF, 2NF, 3NF or BCNF) the above relation is, and why. Then, if necessary, convert the above relation to the highest normal form (BCNF). Write any assumptions that you make.
Question: Consider a relation named as BOOK that contains data about the books in a library. BOOK relation was initially created with the attributes BookID (an id that library assigns), ISBN, CopyNr (used to differentiate copies of the same book), Title, PublYear, Author, and AuthorBornYear. Primary key: BookID, CopyNr and Author Candidate key: ISBN, CopyNr and Author Below you see dependencies of attributes: Dependency 1 (D1): ISBN, Title, PublYear, AuthorBornYear were dependent on BookID, CopyNr, and Author Dependency 2 (D2): Title and PublYear were dependent on BookID, CopyNr Dependency 3 (D3): AuthorBornYear was dependent on Author First determine which normal form (1NF, 2NF, 3NF, or BCNF) the above relation is, and why. Then, if necessary, convert the above relation to the highest normal form (BCNF). Write any assumptions that you make Subject: MYSQL
We have a relation with the following attributes: R={A,B,C,D,E} and all the attributes are atomic. Primary key of this relation is AB. What is the normal form of this relation given the following functional dependencies: AC→D, AB→C, AB→D, AB→E Select one: a. First Normal Form b. This relation is not normal. c. Third Normal Form d. Second Normal Form
Primary key identifies a unique tuple of a relation, true or false?
The table STUDENT has the attributes STUDENT_ID, NAME, SCHOOL_ID, and ADDR. The table SCHOOL has the attributes SCHOOL_ID, NAME, and STATE_CODE. Assume that there is a 1:N relation between SCHOOL and STUDENT. Which of the following creates a table that shows the STUDENT attributes and the corresponding SCHOOL attributes? a. SELECT * SCHOOL_ID FROM STUDENT JOIN SCHOOL b. SELECT * SCHOOL_ID FROM STUDENT JOIN SCHOOL USING(SCHOOL_ID) c. SELECT * SCHOOL_ID FROM STUDENT NATURAL JOIN SCHOOL d. SELECT * SCHOOL_ID FROM STUDENT, SCHOOL WHERE SCHOOL_ID = SCHOOL_ID
Design the database in an MS Excel spreadsheet as a single relation called Movie. It should contain an ID, Title, Year Released, Genre (e.g., sci-fi, comedy, thriller, etc.), Rating (e.g., G, PG, R, etc.), Format (e.g., VHS, DVD, MP3, etc.), a free-form Comments field, plus the main cast and crew members. Add the following entry plus at least two of your own: Title: Star Trek Year: 2009 Genre: Sci-Fi Rating: PG Format: DVD Director: J. J. Abrams Starring: Chris Pine (Capt. Kirk), Zachary Quinto (Mr. Spock) Zoe Saldana (Uhura), Karl Urban (Bones McCoy) What normal form is this design? Why? What should be done to correct the design?
Create an unnormalized relation using student and class entities.
What is the connection between a relation's primary key and the functional relationships between all of its attributes?