Write SQL queries for the following sentences considering the given relational schema of universitydatabase.studenttakesIDdept_nemelot_cradsemesteryargradesectionCOursedepartmentadvisorCOuTse idsesemesterCOurse iltitledept_namebuildingbaulgetdept namecreditsLidtime_slotbudldingTOO_riotime_slot_idtime slot_istirt timeend_timeprereginstructorclassroombuildingnemedept_mecapacityteachessalaryIDsecsemesterverSuppose full name of the instructors are stored as atomic value where parts of names areseparated by blank space. Find all instructors who has last name “Rob".(i)(ii)Find the name of those departments whose total salary of the instructors is greater than600000.(ii)Delete courses having ID beginning with "CS";

Answered: Suppose full name of the instructors…

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

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City Cinema is required to store information for Movie Hire Business. Each Movie can be hired by one or more Member. A Member can hired only in one Movie. For each MOVIE, the MovieId (identifier), Category (contains more than one category), Title and Year-released are stored. For each MEMBER, its MemberId (Identifier) & Mem-Name (compose of FullName & FamilyName) are stored. Each Movie can be directed by exactly one Director, but a Director may direct one or more Movie. The data needed for each DIRECTOR is DirectorId (identifier), DirName and Address. When a Director is directing a Movie the Direction-date is also recorded. Construct an E-R diagram for the above scenario. Identify entities, attributes of each entity, relationships, relationship attribute (if any), keys, and the minimum and maximum relationship cardinalities.
database ERD
- Post-condition: tel after the operation is the same as tel before the operation with the addition of maplet {name? → phone?} . - Appending a ' to a variable means 'the variable after the operation is performed'. - EXERCISE. Rewrite this schema to get rid of post-condition, and allow overwriting of existing names.
What, precisely, is the function of the delete operator?
1.Description: You are given a list of queries, each consisting of three integers: a, b, and k. Your task is to perform a series of operations on an array of size n such that each element in the array is incremented by k in a specific range defined by a and b.. Coding expansion.
Answer the given question with a proper explanation and step-by-step solution. For this question use the file data1.csv The file contains information on various customers. Each customer has a unique customer id. The data also has information on age income and Gender of the customers. Space can be used as a delimiter for this file. Find the following: A) The total number of the rows in the file. B) The number of unique customer ids in the datafile. For this question create a set object which will only allow you to add unique customer ids. C) The program asks user to provide an id and prints information about that customer. Make sure to take care for the errors due to invalid id (i.e., id does not present in data). Print “id not found” when id is not found. Save the file as Solution1.java. You can use either File Reader or Scanner classes to read the data in the csv file. Your program should print the following after filling the blanks with the appropriate values Outcome: The total…
Student(Id, name, age, class, grade) Retrieve all the student who has age less than 18 and grade if F
What are the benefits of the data structure "Union Find Disjoint"?
10. Write another function called db_consistent that takes a dictionary of dictionariesin the format described in the previous question and returns Trueif and only if every one of the inner dictionaries has exactly the same keys.(This function would return False for the previous example, since RosalindFranklin's entry doesn't contain the 'author' key.)
Subject: Technology of Large Databases. You have a table AUDITORIUMS with a nested table that represents the classes that take place in that auditorium: a. Auditorium number b. Class CLASS_TYPE_TABLE c. Max people allowed to be in an auditorium Check, if the class with parameters ("Databases", DSP101) is registered in auditorium 405!
COLLEGE (CollegeName, ZipCode, CarnegieClass)LECTURER (LectureID, Name, Email, PhoneNumber)EXPERTISE (TopicOfExpertise, LevelOfExpertise, LecturerID)CONTRACT (ContractDate, CollegeName, LecturerID, Salary)ZIP (ZipCode, City, State) Also assume that there are frequent queries involving the following information:a. List of colleges sorted by zip code.b. Access to information on a specific lecturer—their name, email address, and phone number.c. List of lecturers sorted by their area of expertise and within each area of expertise, their expertise level.d. List of colleges sorted by their CarnegieClass and within the CarnegieClass by zip code.e. Access to information on a specific lecturer based on their email address. For each situation above, specify the types of index(es) you would recommend. Justify your decisionsbased on the given relational model.

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