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Draw the relationships and entities model for each of the following:
* in the traditional way* for example: see the pic??.
In the
Written by more than one author
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Solved in 2 steps with 1 images
- Store the following fields for a library database: AuthorCode, AuthorName, BookTitle, BorrowerAddress, BorrowerName, BorrowerCardNumber, CopiesOfBook, ISBN (International Standard Book Number), LoanDate, PublisherCode, PublisherName, and PublisherAddress. A one-to-many relationship exists between publishers and books. Many-to-many relationships exist between authors and books and between borrowers and books.a. Name the entities for the library database b. Without creating a set of dependency diagrams, write the relational schema that meet 3rd NF requirements. c. Draw the Crow’s Food entity-relationship diagram for the library database.Problem 8-10 use the same database. Let a database application have the following entities Sales = (Customers, Salesperson, Retail Order, Items), which contains the information that a salesperson sells multiple items (tables, computers,...) to customers. There are many customers. There are many salesmen. There are many items. For example, John sells to Joe, Smith sells to Jane, The "Salesperson" will sale many times. The "Customer" can come back and buy items many times The "Retail Order" specifies which Salesperson sell to which customer. In each "Retail_Order", many items (tables, computers,...) can be sold Hint: This is very similar to one of your homework What is the relationship between Retail_Order and Items? One-to-many relationship None of the above One-to-one relationship Many-to-many relationshipGive Authentic and relevant answer. DATABASE SYSTEMS Construct an Enhanced ERD along with Possible entity clusters of the given below system. This describes the business process to publish an academic paper. The author submits a paper to an editor of a journal. The editor first checks whether the paper fit the theme of the journal. If not, the editor rejects the paper. Otherwise, the editor assigns the paper to a number of reviewers. The reviewers review the paper, and write a review. The review is sent to the editor. The editor then assesses the quality of the paper with the help of reviewers’ comments. If the quality is good, the paper will be accepted, and the author notified. Furthermore, the paper is forwarded to the publisher for publication. If the quality is bad, the editor rejects the paper.
- Draw an ER model; An author writed a book . Every book has a title, ISBN, year, and price. each book may be authored by one or more author and each author may write one , or more than one book. For authors the database keeps the name, address and URL of their homepage. Each book has a publisher. The database keeps the name, address , and phone number adn the URL of their wedbsite. Each publishers publishes one or more books and each book is published by exactly one publisher. The warehouse stocks several books. Each warehouse has a code, address and phone number. The database records the number of copies stocked at various warehouse.Suppose you are asked to design a club database system based on the following information. Each student has a unique student id, a name, and an email; each club has a unique club id, a name, a contact telephone number, and has exactly one student as its president. Each student can serve as a president in at most one of the clubs, although he/she can be the members of several clubs. Clubs organize activities and students can participate in any of them. Each activity is described by a unique activity id, a place, a date, a time and those clubs that organize it. If an activity is organized by more than one club, different clubs might contribute different activity fees.QuestionDraw an E-R diagram for the system according to the above description.Store the following fields for a library database: AuthorCode, AuthorName, BookTitle, BorrowerAddress, BorrowerName, BorrowerCardNumber, CopiesOfBook, ISBN (International Standard Book Number), LoanDate, PublisherCode, PublisherName, and PublisherAddress. A one-to-many relationship exists between publishers and books. Many-to-many relationships exist between authors and books and between borrowers and books. Draw the Crow’s Food entity-relationship diagram for the library database.
- 4. A database is built in the library to catalogue books and handle book lending. Each book in the library is catalogued by author. Any number of books can be associated to an author. Each user is allowed to borrow one and only one book. The database stores information about the following entities and their relationships: User: unique reference number, name, and phone number, Author: unique reference number, name Book: unique title, category (e.g. Physics, Science,..), publication year, the user (reference) borrowing the book, the author (reference) of the book. a) Write SQL CREATE TABLE statements for these three tables. Justify your choices of keys used. b) Write SQL statements to perform the following tasks: (i) Insert a new entry in the user table (for a set of values at your choice). (ii) List the title for all books with author "Stephen King". (iii) List the names of all the authors in the database, and beside each name give the number of books published on or after 2017The following tables are part of a schema of an auto insurance company. The insurance database keeps a record of cars and a record of claims for cars where policy holders could have initiated an auto insurance claim such as an auto accident. Issues for which a claim is initiated are called claim events. All claims have a claim event. A type of a claim event could be found in one or more claims. A car could have no or many claims. Every car has a make and a model. One car make could have one or more models. Write a query that shows the make, model, VIN number and year of manufacture only for cars that have an auto insurance claim of any event type. If the database tables were populated, your query would not list cars that have not had a claim. You do not need to create the database to answer this question but you might just for visualization. CREATE TABLE CAR_MAKE (CAR_MAKE_ID INT NOT NULL PRIMARY KEY,CAR_MAKE VARCHAR(25)); CREATE TABLE MAKE_MODEL (MAKE_MODEL_ID INT NOT NULL PRIMARY…Store the following fields for a library database: AuthorCode, AuthorName, BookTitle, BorrowerAddress, BorrowerName, BorrowerCardNumber, CopiesOfBook, ISBN (International Standard Book Number), LoanDate, PublisherCode, PublisherName, and PublisherAddress. A one-to-many relationship exists between publishers and books. Many-to-many relationships exist between authors and books and between borrowers and books. Without creating a set of dependency diagrams, write the relational schema that meet 3rd NF requirements.
- 16 We would like to design a database to maintain information about COURSES in a Faculty. Each COURSE has a code, name number of credit hours and the department that offers it. A COURSE may have zero, one, or many prerequisite COURSES. A COURSE may be a prerequisite for zero, one, or many COURSES 2"What is the degree of the relationship type'prerequisite of a. A unary (recursive) relationship O b. A binary relationship cA ternary relationship O d. This relationship is NOT exist ONow lets consider designing a database for the a car lot. Consider the following statements -> Our car lot sells many cars every month (we have a big inventory) Our car lot has many customers (everyone loves us!) Our car lot has many sales persons (we are ready to help our customers) Each car sale persons sells many cars a week (our prices are great) Our car lot provides many mechanical services (all our mechanics are experts) Our Service department has many mechanics (any mechanic would love to work here) Our mechanics provide service to our customers (our repeat business is awesome) Examine the above information and determine the Entities. With each entity - determine some attributes for each entity. As a note - is there any information in the above statements that is not helpful for our database design? Now lets consider our Car Lot database design and determine the relationship of our Entities Using LucidChart or similar tool (Visio) to construct an ERD…ASSESSMENT 02 1. You are required to design and implement a database system for a pharmacy shop with only one branch. The following is the description from the manager, Mr. Seth Akoto. "here, medicines that require prescriptions are sold only to people that have prescriptions. It is the pharmacy attendant that serves customers when they enter the pharmacy. Usually, people walk in and either give the prescription or mention the medicine they wish to purchase. The worker then searches to see if the medicine is in stock. If in stock, worker accepts payment from customer and gives the medicine and a receipt to the customer.“ 1. Determine all the entities from the description given by Mr. Akoto. 2. Assuming Mr. Akoto only wants a database system that would keep records of medicine{name of medicine, amount in grams in stock} and purchases{medicine bought, amount in grams bought, who attended to customer, when it was sold, contact and name of customer that bought the medicine} a. Draw and ER…