Write a Java statement that throws a new exception with the String: File Not Found.
What will be an ideal response?
throw new Exception("File Not Found!");
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Generate the relational algebra, tuple relational calculus, and domain relational calculus expressions for the following queries:
(a) List all hotels. (b) List all single rooms with a price below £20 per night. (c) List the names and cities of all guests. (d) List the price and type of all rooms at the Grosvenor Hotel. (e) List all guests currently staying at the Grosvenor Hotel. (f) List the details of all rooms at the Grosvenor Hotel, including the name of the guest staying in the room, if the room is occupied. (g) List the guest details (guestNo, guestName, and guestAddress) of all guests staying at the Grosvenor Hotel.
Given the following schema:
Teaching(ProfId, CrsCode, Semester) Professor(Id, Name, DeptId) Transcript(StudId, CrsCode, Semester, Grade) Student(Id, Name, Address, Status)(a) Write a SELECT statement that outputs the course codes of all courses in which the student with Id 111111 is registered for the F2000 semester. (b) Write a SELECT statement that outputs the names of all professors that have taught both CSE305 and CSE315. (c) Write a SELECT statement that lists, for each professor that taught CSE305, the professor's name and the number of times he/she has taught the course. (d) In order to help a student with courses he/she will be taking in F2000 we want to output a set of professors who can provide tutoring. Write a SELECT statement that, for each student, outputs the set of professor Ids of professors that have taught a course in which the student is registered in F2000. (Hint: use a correlated nested subquery based on your answer to (11a)).
What is the maximum number of nodes that can be attached to a 10BaseT segment or hub?
A. 10 B. 16 C. 1024 D. 1000
Disconnecting a USB flash drive while it is in use may cause damage to the files stored on the device.
Answer the following statement true (T) or false (F)