employee (personname, street, city) works (person_nате, соmpany_лате, salary) соmpany (companyлате, сіtvy) Figure 2.17 Employee database.
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- 4 tables for the database: PATRON, BOOK_COPY, BOOK, and CHECKOUT. (Since a book may have multiple copies that may be purchased by the library at different time, it is better to have a BOOK_COPY table to avoid unnecessary data redundancy.) The data in the tables are as follows: PATRON table records a patron’s ID, name, address, phone number, and email address. BOOK table contains information such as author, title, publication date, subject, language, and a unique identifier (It can be the ISBN of the book) for each book. BOOK_COPY table records a unique identifier for each copy of a book, the date of purchase, and the identifier of the book from the BOOK table. CHECKOUT table records the date of check-out, patron’s ID, the identifier of the book copy from the BOOK_COPY table, and the due date.Access path A database table is composed of records and fields hold data. Data is stored in records. A field is a part of a record and contains a single piece of data for the subject of the record. The access path for finding the list of books is AUTHOR: AuthorID, Lname BOOKAUTHOR: AuthorID, ISBN BOOKS: Pubdate, ISBNaccess databases Normalization Exercise Represent this table as a collection of tables in 3NF: Student (StudentNumber, StudentName, NumberCredits, AdvisorNumber, AdvisorName, CourseNumber, CourseDescription, Grade)
- Chevening Scholarship Database's stores data about each application received by the Chevening Foundation. As a database designer, you're assigned to design the new database system according to the following requirements: Each applicant can submit one or more applications (one application per year). Each application form is submitted by only one applicant. Each application has a unique application ID number, application date, class level, GPA, GPA scale, academic honours, extracurricular activities, community activities, other scholarship awarded and financial need. The applicant's record contains student ID, student's last name, first name, date of birth, address, city, state, zip code, phone number and email address. Each school can be associated with one or more applications. Each application is associated with only one school. Each school has a unique school ID, school name, type, address, city, zip code and phone number. Each application must include two or more recommendations.…SQL Help This veterinarian hospital wants to set up a data warehouse containing various information about the business. One section of this data warehouse should focus on recording information related to each pet visit to the hospital.For each of the visit, it is essential to record the various information represented in the previous tables about the pet, owner and treatment.It is also essential to record data about the date of the visit, including the day, month and year. Finally, the visit fee should be recorded. Note that there is no flat fee for each treatment as the treatment cost can vary depending on the pet type.Based on all these information, draw a star schema for this specific part of data warehouse focusing on recording data related to each visit.SportTech Events. SportTech Events SportTech Events puts on athletic events for local high school athletes. The company needs a database designed to keep track of the sponsor for the event and where the event is located. Each event needs a description, date, and cost. Separate costs are negotiated for each event. The company would also like to have a list of potential sponsors that includes each sponsor’s contact information, such as the name, phone number, and address. Each event will have a single sponsor, but a particular sponsor may sponsor more than one event. Each location will need an ID, a contact person, and a phone number. A particular event will use only one location, but a location may be used for multiple events. SportTech asks you to create a Conceptual Entity Relationship Diagram from the information described above.
- Database Foundations: Design a database to produce the following reports. Do not use any surrogate keys in your design. For each guide, list the guide number, guide last name, guide first name, address, city, state, postal code, telephone number, and date hired. For each trip, list the trip ID number, the trip name, the location from which the trip starts, the state in which the trip originates, the trip distance, the maximum group size, the type of trip (hiking, biking, or paddling), the season in which the trip occurs, and the guide number, first name, and last name of each guide. A guide may lead many trips and a trip may be led by many different guides. For each client, list the client number, client last name, client first name, address, city, state, postal code, and telephone numberThe 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.DATABASE SYSTEMS AllTaste Restaurant database design: some entity information and documents are known as follows: Food Menu: food menu code, food menu name, food category, regional specialty, price, menu image (one menu can have many pictures), number of portions available per day. Customer: customer code, customer's full name, place of birth, date of birth, gender, address, email, phone number, WA number. Employee: employee code, employee name, phone number, position. Restaurant Branch: Branch code, branch name, address, city, phone number, WA number, email. An example of a purchase receipt form as follows (picture): TO-DO: From the information above, do the normalization steps from 1NF, 2NF, to 3NF.
- Material : Relational Algebra Course : Database Systems Create a Relational Algebra From Entity Relational Diagram (ERD) Below for:a) Displays books published in the last 5 years from 2020.b) Displays details of customers who have done shopping (using the Join operator)c) Displays email customers who have done shopping (using the Set operator)d) Displays the ISBN book that has never been purchased (using the Set operator)Database course: a. List the details of all the employees who are from the department number 2. b. List the details of all the employees who joined the company after 01-JAN-11. c. List employeeNO and DepartmentNO of all the employees who work as ‘Engineer’ and earn more than 1800 Omani Rials. (I need the codes to copy it)Database Schema The schema for the Ch07_FACT database is shown below and should be used to answer the next several problems. Click this image to view it in its own tab. FIGURE P7.56 THE CH07_FACT ERD CHECKOUT PATRON PK Check Num PK Pat ID FK1 Book_Num FK2 Pat_ID Check_Out_Date Check_Due_Date Check_In_Date >0-----H- Pat_FName Pat LName Pat_Type BOOK AUTHOR PK Book_Num PK Au ID Book_Title Book_Year Book_Cost Book_Subject FK1 Pat_ID Au_FName Au_LName Au_BirthYear WRITES PK,FK1 Book Num PK,FK2 Au ID The CIS Department at Tiny College maintains the Free Access to Current Technology (FACT) library of e-books. FACT is a collection of current technology e-books for use by faculty and students. Agreements with the publishers allow patrons to electronically check out a book,