Consider the situation: Every restaurant has at least one kitchen, one kitchen is part of exactly one restaurant. What is the cardinality of the relationship between entities restaurant and kitchen? A. Many to Many B. One to Many C. Many to One D. One to One
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Q: the cardinality of the relationship between entities restaurant and kitchen
A: the cardinality of the relationship between entities restaurant and kitchen
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- Every restaurant has at least one kitchen, one kitchen is part of exactly one restaurant. What is the cardinality of the relationship between entities restaurant and kitchen? A. Many to Many B. One to Many C. Many to One D. One to OneAn entity in A is associated with at most one entity in B. An entity in B, however, can be associated with any number (zero or more) of entities in A. What is the cardinality ratio? a. one to many b. many to one c. one to one d. many to manyDraw an Entity Relationship Diagram for all of those below. (a simple one) Each lecturer is identified by a unique number, name and phone. A lecturer teaches several courses, and for each course there is a unique code and title (not necessarily unique). There might be several lecturers in a course. Each course requires one or more text books. Each text book is used in at least one course. A text book is identified by a unique ISBN, and its title, authors, publisher and year of publication are known. Each course has a unique code. The bank has many customers. Every customer has at least one account with the bank. An account may be shared by several customers. Each customer has a unique number, type, the opening date and the balance. A flight carries many passengers on a specific airplane. Each airplane has a unique number, while each flight has a code (unique), destination and origin. A passenger has a name, passport number and nationality
- Draw the associations that are described by the following business rules. Include the multiplicities for each relationship. (4 marks) A patient must be assigned to only one doctor, and a doctor can have one or many patient: An employee has one phone extension, and a unique phone extension is assigned to an employee. A bookstore sells at least one book, and a book can be sold at up to 10 other bookstores around town.PLZ help with the following: Create a Crow’s Foot ERD. Draw YOUR entity relationship diagram (ERD) to indicate entities, relationships, connectives, and resolve M:N relationships. For the following: The faculty and students (we refer to them in our system as clients) can electronically check out any book at any time. A book must have at least one author but can have more authors. An author must have written at least one book or more to be included in the system. A book may have neverbeen checked out, but can be checked out many times by the same client or different clients over time. A client may have never checked out a book or they may have checked out many books over time. To simplify determining which client currently has a given book checked out, a M:N relationship between BOOK and CLIENT should be maintained. The information recorded for each book is book number, book title, book subject, and year of publication. For each author, the library records the author ID,…Draw an ER diagram to represent the following situation: When appropriate, model an associative entity. B.D. Owen’s Library would like to store information about AUTHORs, BOOKs, book COPYs, and PATRONs. For each AUTHOR, the library stores a unique author ID and the author’s name. For each PATRON, the library will store a unique patron ID, the patron’s name, any phone numbers the patron has, the date the patron joined the library, and the years the patron has been a member, which can be calculated from the date joined. For each BOOK, the library would like to use the ISBN as the identifier. In addition, it would like to store the book’s title, name of the publisher, date of publication, and the number of copies owned by the library. Each book COPY will have a copy number, which uniquely identifies that copy in conjunction with a particular BOOK. The library will also record the condition code of the copy (i.e. excellent, good, fair, poor), last date checked out, and last date returned.…
- Draw an entity-relationship diagram for the following situation: A commercial bakery makes many different products. These products include breads, desserts, specialty cakes, and many other baked goods. Ingredients such as flour, spices, and milk are purchased from vendors. Sometimes an ingredient is purchased from a single vendor, and other times an ingredient is purchased from many vendors. The bakery has commercial customers, such as schools and restaurants, that regularly place orders for baked goods. Each baked good has a specialist that oversees the setup of the bakery operation and inspects the finished product. List the tables and keys that are needed to implement the commercial bakery system.Draw an entity-relationship diagram for the following situation: A commercial bakery makes many different products. These products include breads, desserts, specialty cakes, and many other baked goods. Ingredients such as flour, spices, and milk are purchased from vendors. Sometimes an ingredient is purchased from a single vendor, and other times an ingredient is purchased from many vendors. The bakery has commercial customers, such as schools and restaurants, that regularly place orders for baked goods. Each baked good has a specialist that oversees the setup of the bakery operation and inspects the finished product.Draw an ER diagram that captures the following information: A book identified by (unique Id number, a title and one or more authors), A library identified by (unique name and adders), A borrower has a name and a unique ID code. The library service may own several copies of a given book. A borrower can have many books on loan, but each copy of a book can only be on loan to one borrower. A borrower could borrow the same book on several occasions, but it is assumed that each such loan will take place on a different date. *
- Luxury-Oriented Scenic Tours (LOST) provides guided tours to groups of visitors to the Washington, D.C. area. In recent years, LOST has grown quickly and is having difficulty keeping up with all of the various information needs of the company. The company's operations are as follows: LOST offers many different tours. For each tour, the tour name, approximate length (in hours), and fee charged is needed. Guides are identified by an employee ID, but the system should also record a guide's name, home address, and date of hire. Guides take a test to be qualified to lead specific tours. It is important to know which guides are qualified to lead which tours and the date that they completed the qualification test for each tour. A guide may be qualified to lead many different tours. A tour can have many different qualified guides. New guides may or may not be qualified to lead any tours, just as a new tour may or may not have any qualified guides. Every tour must be designed to visit at least…Create a Crow's Foot ERD for the following description: The KwikTite Corporation operates many factories. Each factory is located in a region, and each region can be "home" to many of KwikTite's factories. Each factory has many employees, but each employee is employed by only one factory.Suppose that you are given the following information for the articles publications: • Each article is published in a Journal only. Article may have their own identification number, name, and any other relevant information. Articles cannot be duplicated and will be only accepted in a Journal. Journal will have their identification number, name, any other relevant information. • Authors may publish one or more articles at a time, but each article must be distinctive and published in the appropriate journal. If necessary, the author may be required to present their work at a specific conference. The details of the conference must also be recorded. A reviewer will examine an article before it is published. Each reviewer is only allowed to review two articles from the same journal. Sketch an Enhanced Entity Relationship Diagram (Chen's Model) based on the scenario above. Include all the relevant entities and you are also encouraged to add any other relevant entities to specify the…