A Guide to SQL
9th Edition
ISBN: 9781111527273
Author: Philip J. Pratt
Publisher: Course Technology Ptr
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Chapter 2, Problem 10RQ
What is a primary key? What is the primary key for each of the tables in the Colonial Adventure Tours
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The Car Maintenance team also wants to store the actual maintenance operations in the database. The team wants to start with a table to store CAR_ID (CHAR(5)), MAINTENANCE_TYPE_ID (CHAR(5)) and MAINTENANCE_DUE (DATE) date for the operation. Create a new table named MAINTENANCES. The PRIMARY_KEY should be the combination of the three fields. The CAR_ID and MAINTENACNE_TYPE_ID should be foreign keys to their original tables. Cascade update and cascade delete the foreign keys.
Using the Henry Books database, add the new title from Stephen King to the wrote table:
Book code = 3578
Author number = 6
Edition = 1
You will insert 2 snips for this question.
What construct did you use to add a row to the wrote table. Insert the snip of the construct used:
Insert the snip of the wrote table. Be sure the new row is displayed:
4. Write a SELECT statement that selects all of the columns for the catalog view that returns information about foreign keys. How many foreign keys are defined in the AP database?
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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- Delete the OWNER_INDEX 3 index from the OWNER table.arrow_forwardWhat does it mean for two tables to be union compatible?arrow_forwardTask 6: The Car Maintenance team considered that the available maintenance tasks should also have the price information in the database. Alter the MAINTENANCE_TYPES table to include a new column named MAINTENANCE_PRICE of type FLOAT. Alter the MAINTENANCE_TYPES table to include pricing information.arrow_forward
- A select procedure in a relational database can shrink a table's size by deleting columns that don't fit a certain set of requirements.Is it good or bad?arrow_forwardUsing the Henry Books database,Henry Books no longer carries books written by Barbara Owen. Delete this author from the authors table. You will insert 2 snips for this question. What construct did you use to delete author Barbara Owens? Insert the snip of the construct used: Insert the snip of the authors table. Be sure all rows are displayed:arrow_forwardOne of the TAL Distributors database's denormalized tables is as follows: The Customer table is no longer in third normal form due to which column or fields (CustomerNum, CustomerName, Street, City, State, PostalCode, Balance, CreditLimit, RepNum, RepName)? In this example, what is the denormalized table's normal form?arrow_forward
- Note: Use MYSQL Create a database named book-collection-db and table named: bookcollect. Your tableshould contain the following columns: Title, Author, Genre (Children’s, Romance,Thriller, Fantasy, etc.), Publisher, Copyright Date, ISBN Number, Category (Fiction/Nonfiction), Overview, Link Where to Buy, and Price. Create 30 rows containing list of bookwith varied genre.arrow_forwardWhat is the primary key, candidate keys, foreign keys, and non-key columns in these two tables?arrow_forwardWhat is the maximum number of PRIMARY KEY constraints allowed for a table? ( refer to the tables in the JustLee Books database). a. 1 b. 2 c. 30 d. 255arrow_forward
- Task 1: StayWell manages the owner information about every property under their management. Since the owners are essential to the operations, their addresses (with city, state, and zip code) are collected. Create the OWNER table, it should have the following data: OWNER_NUM as fixed-length 5 characters LAST_NAME as maximum 20 characters FIRST_NAME as maximum 20 characters ADDRESS as maximum 100 characters CITY as maximum 20 characters STATE as fixed-length 2 characters ZIP_CODE as fixed-length 5 characters All fields are mandatory and cannot be empty StayWell stores and manages the detailed information about the properties within their operations. Each property is assigned to an office for its management activities. In addition, property-specific information such as the house size, number of bedrooms and floors, and monthly rent are also kept. Each property has an owner reference. Considering the future expansion of StayWell, all properties should be managed within the database.…arrow_forwardWhat exactly is a main key? How crucial is the main key in establishing a link between tables?arrow_forwardConsidering Vaccination Database, write queries to: Display the Subject CNIC, Name, Contact, Dose1 Center, and Dose2 Center as shown below: CNIC Name Contact Dose1 Center Dose2 Center 22401-6645321-1 Nasir 3409991112 Lachi Kohat 2 14301-6045321-5 Shahab 3409991112 kohat 3 Dara The subjects who have been vaccinated different types in Dose1 and Dose2. For instance, subjects who were vaccinated ‘Sinovac’ in the first dose, while Pfizer in the second dose.How many Viles of each type have been consumed so far. How many subjects are vaccinated from expired viles. Suggest the name of Incharge for the best performance award based on the highest number of subjects vaccinated on a single dayarrow_forward
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