Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
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Chapter 5, Problem 5.24RQ
Explanation of Solution
Select query in
In DBMS (Database Management System), the SQL “SELECT” query is used to display all the data from the database table which returns this data in the form of a result table.
SQL statement for fetching the data in the database table:
SELECT * FROM Book, Intersection_Table, Author WHERE Book.Book_ID = Intersection_Table.Book_ID AND Intersection_Table.Author_ID = Author...
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Chapter 5 Solutions
Database Concepts (7th Edition)
Ch. 5 - Explain how entities are transformed into tables.Ch. 5 - Prob. 5.2RQCh. 5 - Prob. 5.3RQCh. 5 - What is denormalization?Ch. 5 - Prob. 5.5RQCh. 5 - Explain the problems that denormalized tables may...Ch. 5 - Explain how the representation of weak entities...Ch. 5 - Explain how supertype and subtype entities are...Ch. 5 - Prob. 5.9RQCh. 5 - Prob. 5.10RQ
Ch. 5 - Show two different ways to represent the 1:1...Ch. 5 - Prob. 5.12RQCh. 5 - Prob. 5.13RQCh. 5 - Prob. 5.14RQCh. 5 - Prob. 5.15RQCh. 5 - Prob. 5.16RQCh. 5 - For your answer to question 5.15, code an SQL...Ch. 5 - Prob. 5.18RQCh. 5 - Prob. 5.20RQCh. 5 - Prob. 5.21RQCh. 5 - Explain how the terms parent table and child table...Ch. 5 - For your answers to questions 5.20, 5.21, and...Ch. 5 - Prob. 5.24RQCh. 5 - Prob. 5.25RQCh. 5 - Prob. 5.26RQCh. 5 - Prob. 5.27RQCh. 5 - Prob. 5.28RQCh. 5 - Define the three types of recursive binary...Ch. 5 - Prob. 5.30RQCh. 5 - Prob. 5.31RQCh. 5 - Prob. 5.32RQCh. 5 - Prob. 5.33RQCh. 5 - Prob. 5.34RQCh. 5 - Code an SQL statement that creates a table with...
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- What is a cross join? Give an example of its syntax.arrow_forwardQuestion 1 Write SQL statements to answer questions 1.1, 1.2, 1.3 and 1.4 based on the following schema. Primary keys are( BOLD and italicized) and attributes with the same names in different tables are foreign keys. Doctors(doctorId, doctorLastName, doctorFirstName,specialtyID, numberOfPatientsSeen) Patients(patientId, patientLastName, patientFirstName, sex, patientBalance, numberOfVisits, patientDateOfBirth ) Records(doctorId, patientId, date, diagnosis, visitCost) Specialty(specialtyId, specialtyName, specialtyCost) 1.1) Create a view, called PatientSmithDoctors, to list all the doctors a patient with the last name of Smith has seen (be careful on this one). 1.2) Write a trigger, each time a row is inserted in the table Records, the numberOfVisits in the corresponding Patient row is updated by 1 (i.e. add 1 to the numberOfVisits) and the numberOfPatientsSeen in the Doctors table is also updated by 1. 1.3) Find the Patient’s full name with the…arrow_forwardConsider the following relational schema:Course (cid, cname, dept, credit)Student (sid, sname, dept, gpa)Enroll (cid, sid, grade, semester) The meaning of these relations is straightforward and the keys are underlined. Write thefollowing queries in SQL. a) List all the students who never got a grade above ‘C’.b) Find the number of students not enrolled in any class.c) Find name of students in EE department who took all the courses offered by CSdepartment.arrow_forward
- Write an SQL Assertion statement to enforce the functional dependency Title → Salary for the relation EMPLOYEE(EmpID, Name, DeptID, Title, Salary). You may assume that no tuple has null values. Discuss any potential issue with this table design.arrow_forwardUsing SQL data definition language, write the SQL statements to create each of the following relations. i. student(student id, name, dept id, total credits)ii. department(dept id, building, budget)iii. lecture_hall(hall id, campus, capacity)iv. course(course id, title, dept id, credits) v. takes(student id, course id, semester, year, grade)arrow_forwardThis question is related to the Database:- Suppose you are creating a database for a library management system. Explain how you would make a table for the "books" entity and insert some sample data, and then alter the table to add a new column for the "authorID" attribute and update "authorID" with some data. Finally, make a SQL query to retrieve all the books that were published after the year 2000. Note that this book schema has several columns, including "book_id" as the primary key, "title", "authorN", "publisher", "publication_year", "isbn", "language", and "num_pages". It also includes "available" column that is set to "true" by default and can be used to track the availability of the book. Please don't use handwriting...arrow_forward
- What are the implications of having multiple candidate keys in a relational table?arrow_forwardConsider the following schema:instructor(ID, name, dept_name, salary)What is the correct SQL statement to perform a query to find the names of all instructors excluding duplicates?(a) select name from instructor;(b) select unique name from instructor;(c) select name from instructor no duplicates;(d) select distinct name from instructor;arrow_forwardWrite an SQL statement to list the LastName and FirstName of customers who have purchased an item that was created by an artist with a LastName that begins with the letter J. Use a subquery. From Database Fundamentals Ch. 3 (Kroenke)arrow_forward
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