Database Systems: Design Implementation & Management
11th Edition
ISBN: 9781305850378
Author: Coronel
Publisher: Cengage
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Chapter 3, Problem 7RQ
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Why does Access require that you enter a descriptive name when the database is created?
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)
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.
Generate the relational algebra, expressions for the following queries:
(a )List all hotel names.
(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…
Every data file has a ------- that says about the way the data is stored.
Records
File structure
Database
Fields
Chapter 3 Solutions
Database Systems: Design Implementation & Management
Ch. 3 - What is the difference between a database and a...Ch. 3 - Prob. 2RQCh. 3 - Prob. 3RQCh. 3 - What are the requirements that two relations must...Ch. 3 - Which relational algebra operators can be applied...Ch. 3 - Explain why the data dictionary is sometimes...Ch. 3 - A database user manually notes that The file...Ch. 3 - Prob. 8RQCh. 3 - Prob. 9RQCh. 3 - Prob. 10RQ
Ch. 3 - Create the table that results from applying a...Ch. 3 - Create the table that results from applying an...Ch. 3 - Using the tables in Figure Q3.13, create the table...Ch. 3 - Prob. 14RQCh. 3 - Prob. 15RQCh. 3 - Prob. 16RQCh. 3 - Identify and describe the components of the table...Ch. 3 - Identify the primary keys. FIGURE Q3.22 THE...Ch. 3 - Identify the foreign keys. FIGURE Q3.22 THE...Ch. 3 - Create the ERM. FIGURE Q3.22 THE CH03_THEATER...Ch. 3 - Create the relational diagram to show the...Ch. 3 - Prob. 22RQCh. 3 - What would be the conceptual view of the INDEX...Ch. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Do the tables exhibit referential integrity?...Ch. 3 - Describe the type(s) of relationship(s) between...Ch. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7PCh. 3 - Prob. 8PCh. 3 - Create the relational diagram to show the...Ch. 3 - Prob. 10PCh. 3 - Prob. 11PCh. 3 - Create the relational diagram to show the...Ch. 3 - Prob. 13PCh. 3 - Do the tables exhibit referential integrity?...Ch. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - For each table, identify the primary key and the...Ch. 3 - Prob. 18PCh. 3 - Do the tables exhibit referential integrity?...Ch. 3 - Identify the TRUCK tables candidate key(s). FIGURE...Ch. 3 - For each table, identify a superkey and a...Ch. 3 - Prob. 22PCh. 3 - Prob. 23PCh. 3 - Prob. 24PCh. 3 - Create the ERD. (Hint: Look at the table contents....Ch. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - Prob. 28PCh. 3 - Create the table that would result from applying...Ch. 3 - Create the table that would result from applying...Ch. 3 - Create the table that would result from applying a...
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- Access path A database table is composed of records and fields hold data. Data is stored in records. A field is a part of a record and contains a single piece of data for the subject of the record. The access path for finding the list of books is AUTHOR: AuthorID, Lname BOOKAUTHOR: AuthorID, ISBN BOOKS: Pubdate, ISBNarrow_forwardA database user manually notes that The file contains two hundred records, each record containing nine fields. Use appropriate relational database terminology to translate that statement.arrow_forwardA(n) _____ is a request for specific information from a database.arrow_forward
- One way to secure a database is to allow only administrators to have access to create and delete tables. (513)arrow_forwardHow do triggers differ from stored procedures in a database?arrow_forwardComputer Science I need help with writing the query in a SQL server Management (database) the question is what are the procedure and triggers in these descriptions? or which procedure and trigger are used for this description If the Students have English as a second language, they need to be placed in classes only reserved for them. If English is a first language, then they need to be placed into specific classes reserved for them.arrow_forward
- Fields in a database are defined by their field name, which specifies whether the field contains text, dates, numbers, or other formats. O True O Falsearrow_forwardHow to check a number of database object has been created?arrow_forwardA user's attempt to enter data into a database may result in a record breaking an established constraint.arrow_forward
- How does one finalize a record in a database?arrow_forwardThe schema defines the part of the database that is seen by the application programs that produce the information from the data within the database. Select one: True Falsearrow_forwardExplain the concept of database triggers and their use cases in database development. Provide examples of scenarios where triggers can automate data-related tasks.arrow_forward
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