Based on your answer in (a), complete the Referential Integrity table below.EntityYes/NoExplanationresidentcomplaintcategoryofficer Read and analyze the following business rules below.A resident may submit many complaints; however, a complaint is submitted by oneresident only.A complaint has one category only, but a category may have many complaints.An officer is in charged on many complaints, but a complaint will be in charged by oneofficer onlya) Draw an Entity Relationship Diagram (ERD) using Crow's Foot notation based on thebusiness rules above. Show all entities, relationships, primary keys, and foreign keys.

Resident, complaint, category and officer all are entities as they exist independent of each other…

Answered: Based on your answer in (a), complete…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

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Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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The following tables form part of a database held in a relational DBMS: Hotel (hotelNo, hotelName, city) Room (roomNo, hotelNo, type, price) Booking. (hotelNo, guestNo, dateFrom, dateTo, roomNo) Guest (guestNo, guestName, guestAddress) where Hotel contains hotel details and hotelNo is the primary key; Room contains room details for each hotel and (roomNo, hotelNo) forms the primary key; Booking contains details of the bookings and (hotelNo, guestNo, dateFrom) forms the primary key; and Guest contains guest details and guestNo is the primary key. Identify the foreign keys in this schema. Explain how the entity and referential integrity rules apply to these relations. 2. Discuss the main characteristics of the database approach and how it differs from traditional file systems?
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Explain the concept of referential integrity constraints and how they maintain data consistency in a relational database.
The following tables form part of a database held in a relational DBMS:Hotel (hotelNo, hotelName, city)Room (roomNo, hotelNo, type, price)Booking (hotelNo, guestNo, dateFrom, dateTo, roomNo)Guest (guestNo, guestName, guestAddress)• Hotel contains hotel details and hotelNo is the primary key;• Room contains room details for each hotel and (roomNo, hotelNo) forms the primarykey;• Booking contains details of the bookings and (hotelNo, guestNo, dateFrom) forms theprimary key;• Guest contains guest details and guestNo is the primary key.Run the SQL statements for the following queries and report the screenshotsof these SQL statements and the results generated from PostgreSQL.(a) List the roomNo, type, and price of the Biltmore Hotel (using subquery) (or a specifichotel name in your database).(b) What is the average price of a room?(c) List the guestNo and gusetName of guests who live in Chicago or Seattle, alphabeticallyordered by their names.(d) List the number of rooms in each hotel in…
What distinctions exist between the two categories of integrity constraints?
The value range of an attribute must be large enough for the index to be relevant. Except for this one use case, an index is never helpful.
The following tables form part of a database held in a relational DBMS:Hotel (hotelNo, hotelName, city)Room (roomNo, hotelNo, type, price)Booking (hotelNo, guestNo, dateFrom, dateTo, roomNo)Guest (guestNo, guestName, guestAddress)• Hotel contains hotel details and hotelNo is the primary key;• Room contains room details for each hotel and (roomNo, hotelNo) forms the primarykey;• Booking contains details of the bookings and (hotelNo, guestNo, dateFrom) forms theprimary key;• Guest contains guest details and guestNo is the primary key.Download and install PostgreSQL (Version 14.5). Create the tables for the four rela-tions using the integrity enhancement features of SQL (using the “CREATE TABLE” state-ments) and populate at least 5 tuples for each relation (using the “INSERT” statements)in PostgreSQL. Please report the screenshots of these SQL statements generated fromPostgreSQL.Run the SQL statements for the following queries and report the screenshotsof these SQL statements and the…

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Based on your answer in (a), complete the Referential Integrity table below. Entity Yes/No Explanation resident complaint category officer