BOOK Book_id Title Publisher_name BOOK AUTHORS Book_id Author_name PUBLISHER Name Address Phone BOOK_COPIES Book id Branch_id No_of_copies BOOK LOANS Book_id Branch_id Card_no Date out Due_date LIBRARY_BRANCH Branch_id Branch_name Address BORROWER Card_no Name Address Phone Consider the LIBRARY relational database schema shown in Figure 8.14, which is used to keep track of books, borrowers, and book loans. Referential integrity constraints are shown as directed arcs in Figure 8.14. Write down relational algebra expressions for the following: A) Find the total number of books published by Macmillan Publishers B) Find the address of the borrower whose card number is '101' C) List the names of the publishers of all the books authored by Dan Brown D) List the names of all the authors and the total number of books each of them authored

BOOK Book_id Title Publisher_name BOOK AUTHORS Book_id Author_name PUBLISHER Name Address Phone BOOK_COPIES Book id Branch_id No_of_copies BOOK LOANS Book_id Branch_id Card_no Date out Due_date LIBRARY_BRANCH Branch_id Branch_name Address BORROWER Card_no Name Address Phone Consider the LIBRARY relational database schema shown in Figure 8.14, which is used to keep track of books, borrowers, and book loans. Referential integrity constraints are shown as directed arcs in Figure 8.14. Write down relational algebra expressions for the following: A) Find the total number of books published by Macmillan Publishers B) Find the address of the borrower whose card number is '101' C) List the names of the publishers of all the books authored by Dan Brown D) List the names of all the authors and the total number of books each of them authored

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

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3A-
Consider a database that includes four relations Student, Staff, Program, Advisor Student BannerID FName LName PCode 8003778543 James Oloye PO01 8765990453 Paul Carter P002 8002786543 Anita Boris PO01 8307563321 Jane Eyre P001 Staff BannerID FName LName PCode 8014768954 Chimamanda Adichie PO02 8001876565 Paulette Davis P001 Program PCode PName PO01 Library Science PO02 Management and Information Science
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The following four tables form part of a library database: • Book (isbn, title, author, genre, price) • Copy (copyId, isbn) • Loan (userId, copyId, loanDate, dueDate) • User (userId, name, address, email) Where: • Book contains details of books and isbn is the primary key• Copy contains details of individual copies of books and copyId is the primary key• Loan contains details of loans and (userId, copyId, loanDate) forms the primary key • User contains details of library users and userId is the primary key 3.1 Identify the primary in the above schema. 3.2 Identify the foreign keys in the above schema. 3.3 Draw an Entity relationship model (ER-model) for the above schema, including: • all attributes• correct notation for primary and foreign keys • relationships• multiplicities 3.4 Draw sample tables for the above relations, ensuring relational integrity rules are met. 3.5 Explain the Entity Integrity constraint with reference to the Book relation.
SQL Help
The problems for this chapter use a database for a simple department store that sells items to customers and wants to keep track of the invoices, the selling price (if an item is on sale), and the sales tax (7%) to be collected on some items. Every customer and invoice are assigned unique numbers. All items have a Universal Product Code (UPC) number and bar-code assigned to each unique item. Food and non-carbonated beverages are not taxed, but clothing, home goods, and most other items are.
Using the Crow’s Foot Diagrram technique, draw a database design for the attached database.
Write the following queries in SQL on the relational database schema for COMPANY database given in page 4. Find the total working hours of each manager.
Database course: Convert the following ER diagram into a relational database schema, be certain to indicate primary keys and referential integrity constraints. (The photos complete each other) (I need the answer to copy it please)
DailyCases * Day PCRTests 9 TestNo Patientid TodalTestCount DateofTest PositiveTestCount Result NegativeTestCount Tester DateofResult Department TotalCases * Dey DepartmentName TotalTestCount TotaPositiveCount Patient * Patientid Employee * Empoyeeld FirstName LastName Title IdentityNumber FirstName RegisteredDate LastName BloodGroup Department CurrentStatus StartDate HesCode Figure 1 According the database design given in Figure 1; Write a SQL statement to display PCR test results as below (Figure 2). First Name of Patient Last Name of Patient Date of Test Ttle of Tester Name of Tester Date of Result Resut DİŞÇİ Prof Dr. Eren Bakız 2021-01-20 00:00:00.000 Pending VOLKAN 2021-12-01 YILDIZ MUHAMMET EMİN TUNÇ OZALP 2 SAFA 2021-12-01 Dr. Bartu Olay 2021-01-21 00:00.00.000 Pendng 3 2021-12-01 Prof Dr. Eren Bakız 2021-01-18 00 00-00.000 Pending 2021-01-12 Bartu Olay Bartu Olay HILAL Dr. 2021-01-18 00:00.00.000 Pendng BURAK AŞRAK 2021-01-12 Dr. 2021-01-20 00:00:00.000 Positive 6 ALI TAHA…
DATABASE SYSTEMS: QUESTION: A local businesswoman has decided to start her own Internet business, called Masterpieces Ltd, hiring paintings to private individuals and commercial companies. Because of your reputation as a database designer she has called upon your services to design and implement a database to support her new business. At the initial planning meeting, to discuss the design, the following user requirements were requested. The system must be able to manage the details of customers, paintings and those paintings currently on hire to customers. Customers are categorized as B (bronze), S (silver), G (gold) or P (platinum). These categories entitle a customer to a discount of 0%, 5%, 10% or 15% respectively. Customers often request paintings by a particular artist or theme (e.g. animal, landscape, seascape, naval, still‐life, etc). Over time a customer may hire the same painting more than once. Each painting is allocated a customer monthly rental price defined by the owner.…
Database Principle and Application - 7 ========================= There is a Company Database that manages the data of employee, department and project. The relational schemas are as follows: EMPLOYEE (Fname, Lname, Employee_id, Gender, Salary, DNO). The attribute means: First name, Last name, employee id, gender, salary, the department number in which the employee works. Each employee has a unique employee id, and can join in projects that in different department. DEPARTMENT (DNO, Dname, Manager_id, Dlocation). The attribute means: Department number, department name, department manager id, department location. The department manager is a type of the employee, thus the Manager_id is a foreign key that references the Employee_id in EMPLOYEE table. PROJECT (Project_NO, Pname, DNO). The attribute means: project number, project name, department number of the department that the project belongs to. Part of the data in the relations are as follows： Table1 EMPLOYEE Fname Lname…