Modern Database Management (12th Edition)
12th Edition
ISBN: 9780133544619
Author: Jeffrey A. Hoffer, Ramesh Venkataraman, Heikki Topi
Publisher: PEARSON
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Chapter 5, Problem 5.30PAE
Program Plan Intro
Meaning of p and s parameter in NUMBER data type for Oracle
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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 bookings and (hotelNo, guestNo, dateFrom) forms the primary key;
Guest contains guest details and guestNo is the primary key.
1. Identify the foreign keys in this schema. Explain how the entity and referential integrity rules apply
to these relations.
2. Produce some sample tables for these relations that observe the relational integrity rules. Suggest
some general constraints that would be appropriate for this schema.
3. Analyze the RDBMSS that you are currently using. Determine the support the system provides for
primary keys, alternate keys, foreign keys, relational…
parts that follow are the building blocks of most relational DBMSs' physical data structures
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…
Chapter 5 Solutions
Modern Database Management (12th Edition)
Ch. 5 - Prob. 5.1RQCh. 5 - Prob. 5.2RQCh. 5 - Prob. 5.3RQCh. 5 - Prob. 5.4RQCh. 5 - Prob. 5.5RQCh. 5 - Prob. 5.6RQCh. 5 - Prob. 5.7RQCh. 5 - Prob. 5.8RQCh. 5 - Explain why you sometimes have to reserve much...Ch. 5 - Why are field values sometimes coded?
Ch. 5 - Prob. 5.11RQCh. 5 - Prob. 5.12RQCh. 5 - Explain why normalized relations may not comprise...Ch. 5 - Prob. 5.14RQCh. 5 - List three common situations that suggest that...Ch. 5 - Explain the reasons why some experts are against...Ch. 5 - Prob. 5.17RQCh. 5 - Prob. 5.18RQCh. 5 - Prob. 5.19RQCh. 5 - Prob. 5.20RQCh. 5 - Prob. 5.21RQCh. 5 - State nine rules of thumb for choosing indexes.Ch. 5 - One of the strongest recommendations regarding...Ch. 5 - Explain why an index is useful only if there is...Ch. 5 - Indexing can clearly be very beneficial. Why...Ch. 5 - Consider the following two relations for...Ch. 5 - Prob. 5.28PAECh. 5 - Prob. 5.29PAECh. 5 - Prob. 5.30PAECh. 5 - Prob. 5.31PAECh. 5 - Suppose you are designing a default value for the...Ch. 5 - When a student has not chosen a major at a...Ch. 5 - Prob. 5.34PAECh. 5 - Prob. 5.35PAECh. 5 - Consider the relations in Problem and Exercise...Ch. 5 - Prob. 5.37PAECh. 5 - Prob. 5.38PAECh. 5 - Prob. 5.39PAECh. 5 - Prob. 5.40PAECh. 5 - Prob. 5.41PAECh. 5 - Consider the relations specified in Problem and...Ch. 5 - Prob. 5.43PAECh. 5 - Prob. 5.44PAECh. 5 - Prob. 5.45PAECh. 5 - Prob. 5.46PAECh. 5 - Prob. 5.47PAECh. 5 - Problems and Exercises 8-65 through 8-68 refer to...Ch. 5 - Refer to the large Pine Valley Furniture Company...Ch. 5 - Problems and Exercises 8-65i5 through 8-68 refer...Ch. 5 - Refer to Figure 4-5 0. For each of the following...
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- What is the difference between SQL performance tuning and database performance tuning?What are the three phases the DBMS processes a query in? What do you do in each phase?Why is an index on every column of a table inappropriate?Where do database statistics come from?Explain what RAID stands for, and describe the levels.What is the difference between a rule-based optimizer and a cost-based optimizer?What are optimizer hints? Give an example of their use.What factors should you take into consideration when creating and using an index?What does the database do differently between optimizing DDL vs DML statements?List and describe 5 things that could cause a delay in query processing.arrow_forwardWhat SQL statement in the Oracle database is required to display system rights associated with my role? (Please keep in mind that this information is retrieved from the catalogue database Role Sys Privs.) Assume myRole is the name of the role.arrow_forwardThe 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…arrow_forward
- 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?arrow_forwardCan Normalization be part of the design process? Why? Can Surrogate Keys be created and managed via the DBMS? Explain how.arrow_forwardhe 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, hoteINo) forms the primary key;• Booking contains details of bookings and (hoteINo, guestNo, dateFrom) forms the primary key;• Guest contains guest details and guestNo is the primary key.a) Identify the foreign keys in this schema. Explain how the entity and referential integrity rules apply to these relations.b) Produce some sample tables for these relations that observe the relational integrity rules. Suggest some general constraints that would be appropriate for this schema.arrow_forward
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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; Guest contains guest details and guestNo is the primary key. Produce some sample tables for these relations that observe the relational integrity rules. Suggest some general constraints that would be appropriate for this schema.arrow_forwardThe 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) formsthe 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. b.Explain how the entity and referential integrity rules apply to these relations.c. Briefly discuss the main reasons for introducing the concepts of superclasses and subclasses into an ER model?arrow_forwardWrite appropriate SQL DDL statements to define the database schema you made in the previous question. Create all the appropriate Referential Integrity constrains.arrow_forward
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