Consider the following database schema designed to store information about Books, and Chapters. Book (BookID, BookTitle, Price) BookChapter (ChapterID, BooklD, ChapterTitle, NoPages) Write the following queries in SQL. 1. Display BooklD of all books with price less than the average price of all books. 2. Display ChapterlD, BooklD, ChapterTitle of all chapters that include the word 'Database' in the ChapterTitle.

Consider the following database schema designed to store information about Books, and Chapters. Book (BookID, BookTitle, Price) BookChapter (ChapterID, BooklD, ChapterTitle, NoPages) Write the following queries in SQL. 1. Display BooklD of all books with price less than the average price of all books. 2. Display ChapterlD, BooklD, ChapterTitle of all chapters that include the word 'Database' in the ChapterTitle.

A Guide to SQL

9th Edition

ISBN:9781111527273

Author:Philip J. Pratt

Publisher:Philip J. Pratt

Chapter2: Database Design Fundamentals

Section: Chapter Questions

Problem 11RQ

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Consider a database with the following schema: Person ( name, age, gender ) name is a keyFrequents ( name, pizzeria ) (name, pizzeria) is a keyEats ( name, pizza ) (name, pizza) is a keyServes ( pizzeria, pizza, price ) (pizzeria, pizza) is a key Write relational algebra/SQL expressions for the following:a. Find the names of all females who eat both mushroom and pepperoni pizza.b. For each person, find all pizzas the person eats that are not served by any pizzeria the personfrequents. Return all such person (name) / pizza pairs.c. Find all pizzerias that are frequented by only females or only males.
Consider the following Relational Schema: Employee (employee_name, street, city) Works (employee_name, company_name, salary) Company (company_name, city) Manages (employee_name, manager_name) Write the SQL statements for the following querries: 1. List the employee names for all the employees not working for First Bank Corporation. 2. List the employee names with the salary greater that all the salaries from the Small Bank Corporation.
You are working with a database that stores information about suppliers, parts and projects. The Supply relation records instances of a Supplier supplying a Part for a Project.The schema for the database used in this question is as follows: (note that primary keys are shown underlined, foreign keys in bold).SUPPLIER (SNo, SupplierName, City)PART (PNo, PartName, Weight)PROJECT (JobNo, JobName, StartYear, Country)SUPPLY (SNo, PNo, JobNo, Quantity)Provide relational algebra (NOT SQL) queries to find the following information. Each question is worth 2 marks.NOTE:• You can use the symbols etc or the words ‘PROJECT’, ‘RESTRICT’ etc as you prefer. • You do not need to try to make efficient queries – just correct ones. • Where you use a join, always show the join condition.a. List the quantity of parts supplied on JobNo 4745.b. List the weight of the Part named “Left-handed screwdriver”.c. List the Project name and Part name of any Parts where fewer than 500 of the part has been supplied to a…
You are working with a database that stores information about suppliers, parts and projects. The Supply relation records instances of a Supplier supplying a Part for a Project.The schema for the database used in this question is as follows: (note that primary keys are shown underlined, foreign keys in bold). SUPPLIER (SNo, SupplierName, City)PART (PNo, PartName, Weight)PROJECT (JobNo, JobName, StartYear, Country)SUPPLY (SNo, PNo, JobNo, Quantity) Provide relational algebra (NOT SQL) queries to find the following information. NOTE:• You can use the symbols σ, π, etc or the words ‘PROJECT’, ‘RESTRICT’ etc as you prefer. • You do not need to try to make efficient queries – just correct ones. • Where you use a join, always show the join condition.a. List the quantity of parts supplied on JobNo 4745.b. List the weight of the Part named “Left-handed screwdriver”.c. List the Project name and Part name of any Parts where fewer than 500 of the part has been supplied to a particular project.d.…
You are working with a database that stores information about suppliers, parts and projects. The Supply relation records instances of a Supplier supplying a Part for a Project.The schema for the database used in this question is as follows: (note that primary keys are shown underlined, foreign keys in bold). SUPPLIER (SNo, SupplierName, City)PART (PNo, PartName, Weight)PROJECT (JobNo, JobName, StartYear, Country)SUPPLY (SNo, PNo, JobNo, Quantity) Provide relational algebra (NOT SQL) queries to find the following information.NOTE:• You can use the symbols σ, π, etc or the words ‘PROJECT’, ‘RESTRICT’ etc as you prefer.• You do not need to try to make efficient queries – just correct ones.• Where you use a join, always show the join condition.a. List the Project name and Part name of any Parts where fewer than 500 of the part has been supplied to a particular project.b. List the name of any Suppliers who have supplied Parts to the Project called “New Academic Building” or to the Project…
Consider the following Relational Schema: Employee (employee_name, street, city) Works (employee_name, company_name, salary) Company (company_name, city) Manages (employee_name, manager_name) Write the SQL statements for the following querries: 1. Assume that an employee works at different companies so its salary is a combinations of different amounts. Find the employees with total salaries greater that all the salaries of employees that work for Small Bank Corporation. 2. Find the company with the most number of employees
Given the following relational schema of a database library (primary keys are underlined and foreign keys are preceded by #): Student(studentNumber, StudentName, studentAddress) Book(bookNumber, bookTitle, #authorNumber, #editorNumber, yearEdition) Author(authorNumber, authorName, authorAddress) Editor(editorNumber, editorName, editorAddress) Borrow(#studentNumber, #bookNumber, borrowDate, returnDate) Write the following queries in Relational Algebra: Find the details of students who borrowed the book titled ‘Database Management Systems’
Given the following relational schema of a database library (primary keys are underlined and foreign keys are preceded by #): Student(studentNumber, StudentName, studentAddress) Book(bookNumber, bookTitle, #authorNumber, #editorNumber, yearEdition) Author(authorNumber, authorName, authorAddress) Editor(editorNumber, editorName, editorAddress) Borrow(#studentNumber, #bookNumber, borrowDate, returnDate) Write the following queries in Relational Algebra: List the details (bookNumber, bookTitle) of books whose author’s name is ‘Ramakrishnan’
This 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...
given the following requirements for a simple database for the football League (FL) Write the needed SQL Statements to create the database: the FL has many teams:, each team has a name, a city, a coach, a captain, and a set of players; 24 players, each player belongs to only one team, each player has a name, a position (such as left wing or goalie), a skill level, and a set of injury records,  a team captain is also a player, a game is played between two teams (host team and guest team) and has a date (such as May 11th, 2020) and a score (such as 4 to 2).
Answer the following questions 1.Explain by using a practical scenario what the difference between a variable and a parameter are. 2. Using a practical scenario explain the difference between Desktop databases and Server Databases. 3. You have been hired as a Database Developer and you have been given the option to use a trigger and a procedure. When would it be best to use procedures? 4. Write a SQL statement that will create a database named Namibian_Team that will store data for all sporting events represented in the country using the Master database in MS SQL Server. 5. As a database developer, you have to explain with visual representations the difference between a logical design and a physical design
Write SQL update statements to do the following on the database schema shown in Figure 1.i. Insert a new student, <‘Johnson’, 25, 1, ‘Math’>, in the database.ii. Change the class of student ‘Smith’ to 2.

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