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- 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 ODatabase Programming 1. ( DBMS. Every airplane has a registration number, a color, and each airplane belongs to a specific model. Each model is identified by a model number (e.g., DC-10, A-380) and has a capacity and a weight. ;) We need to organize the information related to an airport into a relational A number of technicians work at the airport. You need to store the SSN, name, address, phone number, and salary of each technician. Each technician is an expert on one or more model(s). The airport has a number of tests that are used periodically to ensure that airplanes are still airworthy. Each test has a Federal Aviation Administration (FAA) test number, a name, and maximum score. The FAA requires the airport to keep track of each time that a given airplane is tested by a given technician using a given test. For each test, we store the date, the number of hours the technician spent doing the test, and the score that the airplane received on this test. Draw the ER diagram for this…10 The resulting list for each object consists of ordered pairs , which define all domains with a nonempty set of access rights for that object. This statement is TRUE with respect to which of the following methods of access matrix implementation. Global Table Access list for objects Capability list for domains lock-key scheme
- ExerciseThe Prescriptions-B-A chain of pharmacies has offered to give you a free lifetime supply ofmedicine if you design its database. Given the rising cost of health care, you agree. Here's theinformation that you gather:Patients are identified by an- and their names, middle name, last name, addresses, M/F, and agesmust be recorded. Doctors are identified by a kísh. For each doctor, the name, middle name,family name, specialty, Department, and years of experience must be recorded. Eachpharmaceutical company is identified by name and has a phone number. For each drug, the tradename and formula must be recorded. Each drug is sold by a given pharmaceutical company, andthe trade name identifies a drug uniquely from among the products of that company. If apharmaceutical company is deleted, you need not keep track of its products any longer. Eachpharmacy has a name, address, phone number and location. Every patient has a primaryphysician. Every doctor has at least one patient. Each…1. What technique is used to model the situation that Student may have multiple addresses? A) Associative Entity (gerund)B) Weak entitiesC) Super/sub typesD) Recursive relationships 2.There is m:m relationship between students and classes. Which technique is used forrepresenting the student grade? A) Associative Entity (gerund)B) Weak entitiesC) Super/sub typesD) Recursive relationships 3. An associative Entity (gerund) may be used whenever there are data that depends on twoentities even when their relationship is 1:m. True or FalseA) TrueB) False 4. (check all that apply) When do you use recursive relationships?A) the relationship between employees and their supervisorsB) the relationship between employees and their dependentsC) the relationship between employees and their departmentsD) the relationship between employees and their team membersE) the relationship between employees and their job assignments 5. How is a gerund converted into a relational model?A) ignore the gerund in the…1 For the following database scheme Employee(empNo,fName,IName, address,DOB,sex,position.deptNo) Department(deptNo,deptName.mgrEmpNo) Project(projNo.projName,deptNo) WorksOn(empNo.projNo.dateWorked hoursWorked) ut of uestion Use relational algebra to list the names of all employees who work on the SCCS project Use S for selection and P for projection
- 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.FUNDAMENTAL DATABASE SUBJECT: Case: A car wash owner wants to monitor the inventory of products and sales of the business. Create a database design in preparation for a system development that would: Store and monitor the supply of products; The number of vehicle washed by a car wash boy. Vehicles can be classified according to its type (motorcycle, van, bus, etc.). The list of vehicles washed by a car wash boy can be monitored. Salary per employee and the vehicles washed can be retrieved. Car wash history per vehicle can be check also. We already Identified the possible tables, so your task will be: 1. Add data on the tables (assume that this is not normalized yet) 2. reflect on the table and follow the normalization steps base on the rules. 3. normalize its table 4. add all table in one document (lucidchart/google docs), should have relationships and cardinality. 5. make sure that it is in highest normal form, highest will be BCNF (if needed).Q. The database interface of a library allows searching only for a single attribute (such as Titleor Author ) in each query. Your friend decided to extend it's functionality and wrote an algorithm that allowssearching for books that satisfy multiple predicates over single attributes in conjunction. He tells you the algorithmreuses the already implemented query functionality and works by intersecting the results ( book id's ) of queriesover single attributes.Which of the following assumptions on your friend's algorithm are plausible?a) Its worst-case run-time necessarily increases exponentially with respect to the number of attributes in thequery.b) Its worst-case run-time depends on the length of the longest result of the single-attribute queries.c) It might be implemented using an join.d) It might be implemented using sorting.
- "2.1,2.2,2.3, and 2.4 are answered" Introduction The given problem is related to the normalization process of a database table where the requirement is to identify the normal forms of the given sample table and decompose the table. The normalization is a process to break the table into smaller tables to that: a) There is no redundancy b) Table is free from insertion, update and delete anomaly. c) Data in the tables can be handled easily **As per Bartleby guidelines, as the required number of sub-parts to be answered is not mentioned and it is needed to solve first 3 sub-parts. Kindly find the solution to half assignment(first 4 sub-parts). 2.1 Normal form of given table The given table is in unnormalized form i.e. it is not even in the first normal form of the database normalization. Explanation: a) For a single Invoice number, there are many products added to the table. b) There is no direct primary key that can be used to store the data uniquely. c) The given table…Q1) B) Consider you have library database, with the following relations: Book(bookID, name, auther, No.-of-pages, section-name, category) Section(section-name, section-admin, no-of-books, library-code, section-code) Library(library-name, address, phone-no., no-of-sections, manager-name, library-code) Answer the following: 1- specify the primary key(or keys) and the foreign key (or keys) in each relation. If a table does not have a foreign key, write None. 2- draw the schema diagram of 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 2017