All parts of this question use the following database schema: Flights(flno, from, to, distance) Aircraft(aid, aname, cruisingrange) Certified(eid, aid) Employees(eid, ename, salary) , Express in both (i) Relational Algebra and (ii) SQL: b) Find flight numbers of flights with the highest distance.

All parts of this question use the following database schema: Flights(flno, from, to, distance) Aircraft(aid, aname, cruisingrange) Certified(eid, aid) Employees(eid, ename, salary) , Express in both (i) Relational Algebra and (ii) SQL: b) Find flight numbers of flights with the highest distance.

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

See similar textbooks

Similar questions

Refer to the Company Database. List the ssn, last name, birth date, and department name of all employees who were born in the 1980s and are younger than their supervisor. i. Show the SQL for the statements ii. Express the SQL statements as a sequence of relational algebra statements (to be executed sequentially). You must use all the operators: selection projection, join. iii. Illustrate a relational algebra query tree for the execution of the statements. You must use all the operators: selection, projection, join.
Q3) consider you have the Library database with the following relations, where the primary keys are underlined: Book (bookID, name, auther, No.-of-pages, section-name, category) Section(section-name, section-admin, no-of-books, library-code) Library (library-name, address, no-of-sections, manager-name, library-code, country) Answer the following SQL queries: 4. Find the books names that have pages between 300 and 600. 5- Find the address and number of sections in the libraries of united states and order them by the manger name.
EMPLOYEE Frame Minit Lname Sen Bdate Address Sex Salary Super sen Dno +444 DEPARTMENT Dname Dnumber Mor an Mgr start date DEPT LOCATIONS Dnumber Dlocation PROJECT Prame Prumber Plocation Dnum WORKS ON Ennn Pno Hoir Hours DEPENDENT Esen Dependent name Se Bdate Relationship Reforential integrity constraints displayed on the COMFWNY relational database schema. One possible database state for the COMPANY relational database schema. EMPLOYEE Fname Minit Lname John Frankin T Sex Salary 30000 333445555 5 M 40000 Jo00665555 F 25000 Joe7e54321 43000 J88Ge5556 San Bdate Address Super en Dno 123456789 1965-01-09 731 Fondren, Hounton, TX M 333445555 1955-12-08 638 Voas, Houston, TX Go0087777 1960-01-19 3321 Castle, Spring. TX 987654321 1941-06-20 291 Berry, Bellaire, TX Narayan 666884444 1962-09-15 975 Fire Oak, Humibile, TX M B Smith Wong Zelaya Wallace 5 Alicia 4 Jennifer F 38000 333445655 25000 333445555 M 25000 007654321 M 55000 NULL Ramesh English 453453453 1972-07-31 5631 Rice, Houston, TX F…
Use the following relational schemas for answering the queries in relational algebra; STUDENT(ID, Name, Phone, Gender) ENROLMENT(Student_ID, Course_ID) COURSE(CID, CName, Instructor) Find the name and phone of all students who registered the course ‘ITE1004’ under ‘Prof. Raghu’.
Assume the e-commercial database shown in the Appendix. Write the following queries in (a) relational algebra and (b) SQL. State your assumptions if the semantics is not clear. 1) Find the names of all students who have not taken any courses. APPENDIX STUDENTS(student id, first_name, last _name, email, major_code, class_year) COURSES(course id, course_name, course_description, credits, department_code) ENROLLMENTS(student id, course id, semester, grade) MAJORS(major code, major_name, department_code) DEPARTMENTS(department code, department_name)
Consider the following schema of hotel reservations database: Hotel (Hotel No, Name, City) Room (Room No, Hotel No, Type, Price) Booking (Hotel No, Guest No, Date From, Date_To, Room No) Guest (Guest_No, Name, City) Write RA queries for the following: a) Get the details (names and price) of all hotels in California. b) Get the average price of a room grouped by city. c) Find the hotel name and city of the hotel with the highest priced room. d) Get the hotel names and room numbers of any hotel rooms that have not been booked.
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)
I need the answer as soon as possible
subject : database system Member (MemberID, Name, ContactNo, Status, Sex)Borrow (BorrowNo, MemberID, CatalogNo, CheckOut, Return, Fine)Book (CatalogNo, Title, Author, Publisher, Year, Category) Write the appropriate relational algebra to produce the following queries. List member ID for members that borrowed all the ‘database’ books (category).
I need the answer as soon as possible
The following tables describe the content of a relational database:
Relational Algebra Questions:Using the instance of the Airport database, formulate the following queries in the relationalalgebra: 1. List full details of all airports located outside the United States.Note: You should use the not equal sign  in this query. 2. List the name and the state of all United States airports. 3. List the name and the fleet size of all carriers employing more than 50000 workers. 4. List the carrier name, the carrierID, the flightNo and the date of all flights. 5. Display the number of airports. 6. Display the number of flights with distances longer than 3000 miles. 7. Display the number of all carriers and the average of their revenues. 8. Display the number of flights leaving from JFK and the total of their distances. 9. Display the minimum, the average, and the maximum distances of the flights that arescheduled on October 17th, 2017?