A Guide to SQL
9th Edition
ISBN: 9781111527273
Author: Philip J. Pratt
Publisher: Course Technology Ptr
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Chapter 2, Problem 7RQ
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Shorthand representation of the relational
- The shorthand representation is used to represent the database table in an easier and an understandable way by using primary keys.
- The step wise process for representing a shorthand representation of a database structure is as follows:
- First, the Table Name is written down...
Explanation of Solution
Shorthand representation for Colonial Adventure Tours database:
For each table, the table name is written down and within the paranthesis, all the columns in the table are lsited out. Here, the primary keys are underlined.
The shorthand representation to represent the table CUSTOMER is given below.
CUSTOMER (CUSTOMER_NUM, LAST_NAME, FIRST_NAME, ADDRESS, CITY, STATE, POSTAL_CODE, PHONE)
The shorthand representation to represent the table GUIDE is given below...
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Chapter 2 Solutions
A Guide to SQL
Ch. 2 - Prob. 1RQCh. 2 - What is an attribute?Ch. 2 - What is a relationship? What is a one-to-many...Ch. 2 - Prob. 4RQCh. 2 - What is a relation?Ch. 2 - Prob. 6RQCh. 2 - Prob. 7RQCh. 2 - How do you qualify the name of a field, and when...Ch. 2 - Prob. 9RQCh. 2 - What is a primary key? What is the primary key for...
Ch. 2 - Prob. 11RQCh. 2 - Prob. 12RQCh. 2 - Define second normal form. What types of problems...Ch. 2 - Define third normal form. What types of problems...Ch. 2 - Prob. 15RQCh. 2 - Prob. 16RQCh. 2 - List the changes you would need to make to your...Ch. 2 - Prob. 1TDCh. 2 - Prob. 2TDCh. 2 - Prob. 3TDCh. 2 - Prob. 4TDCh. 2 - Prob. 5TDCh. 2 - Prob. 1CATCh. 2 - Identify the functional dependencies in the...Ch. 2 - Prob. 3CATCh. 2 - Determine the functional dependencies that exist...Ch. 2 - Prob. 2SCGCh. 2 - Prob. 3SCG
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- Describe the process of converting an unnormalized database into a fully normalized form, illustrating each step.arrow_forwardThe following tables describe the content of a relational database:arrow_forwardSubject: Database Topic: EERD Please use UML Modelling Notation. (Don't use Chen’s Notation or Crow’s Feet Notation) -Based on the information given below, draw the conceptual EERD where you should include the enhanced features. A car dealership wishes to maintain data about the customers who purchase a car. Each customer may purchase one or more vehicles and each vehicle can be purchased by many different customers over time (for example, a customer maypurchase a new vehicle, trade that vehicle in and someone else can purchase the vehicle traded in.) Data that the dealership wishes to keep regarding customers includes customer identification number, name, address, homephone, work phone, cell phone and e-mail address. Information about vehicle includes vehicle identification number, make, model, year, transmission type, engine size and color. Vehicles can be a member of one of the following categories: cars, trucks, minivans or SUVS. A vehicle can be amember of only one category at a…arrow_forward
- An index is an orderly arrangement used to logically access rows in a table. From a conceptual point of view, an index is composed of an index key and a set of pointers. In your opinion, explain the role indexes play in a relational database.arrow_forwardAlso Draw Schema Diagramarrow_forward(a) Use STUDENT and LECTURER tables shown below to answer questions (i) and (ii). Table name: STUDENT STUD_ID 100278 LECT_ID 128569 2 512272 4 531235 2 531268 553427 1 Table name: LECTURER LECT ID FACULTY ID 1 6. 3 6 4 4 (i) Based on STUDENT join. and LECTURER tables, illustrate a natural (ii) Create the relational diagram for the database. (b) Define dirty data and identify FIVE (5) of its sources. (c) Give some recent examples of Business Intelligence (BI) usage, using the Internet for assistance. What BI benefits have companies discovered?arrow_forward
- What are homonyms and synonyms, and why should they be avoided when constructing a database?arrow_forwardWRITE THE CODE OF MYSQL IN PYTHON Create database and tables as given below by using Python. (a) Market database (b) Vendor: vendor_id integer, vendor_name varchar, license_start date, license_end date (c) Item: item_id integer, item_name varchar, item_type varchar, previous_price float, last_sold_date date (d) Auction: auction_id integer, vendor_id integer, item_id integer, price float Choose primary and foreign keys depending on the relations in Market database design.arrow_forwardDatabase normalization is a very important process in designing and organizing tables (relations) and their columns (attributes or fields) in a relational database. Therefore, what are the consequences (problems) if a database was designed without it? Would the database still work?arrow_forward
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