A Guide to SQL
9th Edition
ISBN: 9781111527273
Author: Philip J. Pratt
Publisher: Course Technology Ptr
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Chapter 3, Problem 5SCG
Explanation of Solution
Checking the results with the figure:
To check the tables created by the script are matching with the description given in the figures 3-40, the following commands are executed and are then compared with the figures.
Query to display the characteristics of table “LOCATION”:
DESCRIBE LOCATION;
Query to display the characteristics of table “OWNER”:
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Students have asked these similar questions
Create the ROOMS table using the specification below:
Table Name: ROOMS
Field Name/
Data Type Size
Constraints
column name
RID
Number
8
PRIMARY KEY
RType
Varchar2
25
NOT NULL
Rate
Number
Bedroom
Number
5
Room Status
Varchar2
10
REFERENCES to CID in
Clients Table
CID
Number
The number of times the table structure has been altered by SQL queries. Which major changes need to be considered? Which commands should I use to implement these modifications?
How often do SQL queries affect the table's structure? Which major adjustments need to be considered? What set of instructions is required for these modifications?
Chapter 3 Solutions
A Guide to SQL
Ch. 3 - Prob. 1RQCh. 3 - How do you delete a table using SQL?Ch. 3 - Prob. 3RQCh. 3 - Prob. 4RQCh. 3 - Prob. 5RQCh. 3 - Prob. 6RQCh. 3 - Prob. 7RQCh. 3 - Prob. 8RQCh. 3 - Prob. 9RQCh. 3 - Prob. 10RQ
Ch. 3 - Prob. 11RQCh. 3 - Prob. 12RQCh. 3 - Prob. 13RQCh. 3 - Use SQL to complete the following exercises....Ch. 3 - Prob. 2TDCh. 3 - Prob. 3TDCh. 3 - Prob. 4TDCh. 3 - Prob. 5TDCh. 3 - Prob. 6TDCh. 3 - Prob. 7TDCh. 3 - Prob. 1CATCh. 3 - Add the following row to the ADVENTURE_TRIP table:...Ch. 3 - Prob. 3CATCh. 3 - Prob. 4CATCh. 3 - Prob. 5CATCh. 3 - Prob. 6CATCh. 3 - Review the data for the TRIP table in Figure 1-5...Ch. 3 - Colonial Adventure Tours would like to increase...Ch. 3 - Prob. 1SCGCh. 3 - Add the following record to the VACATION_UNIT...Ch. 3 - Delete the VACATION_UNIT table.Ch. 3 - Prob. 4SCGCh. 3 - Prob. 5SCGCh. 3 - Prob. 6SCGCh. 3 - The SERVICE_REQUEST table uses the CHAR data type...
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- Add two columns to the EMPLOYEES table. One column, named EmpDate, contains the date of employment for each employee, and its default value should be the system date. The second column, named EndDate, contains employees date of termination.arrow_forwardExplain the use of derived tables.arrow_forwardThe data set can contain many data tables Select one: True O False gearrow_forward
- How many different SQL queries do you think changed the table's structure? Which substantial adjustments have to be included into the calculations? Which commands must be executed in order for these modifications to take effect?arrow_forwardYou have the following tables: APARTMENTS (ADDRESS, CITY, STATE, RENTER_ID, RENTER_LAST_NAME) RENTERS (RENTER_ID, FIRST_NAME, LAST_NAME) What is the primary key for the APARTMENTS table? (It may be a composite key involving 2 or more fields) What are the foreign keys, if any? What is the primary key for the RENTERS table? What are the foreign keys, if any? What field in RENTERS can be eliminated so that the RENTERS table is normalized?arrow_forwardHow does SQL change table structure? What large changes are possible? Which commands apply these changes?arrow_forward
- Write SQL server procedure to insert record for below table employees(employee_id, first_name, last_name, position, department)arrow_forwardInsert the data into the tables you created in Problem 1.arrow_forwardAssuming that the CUSTOMER table contains a CUST_AGE attribute, write the query to update the values in that attribute. (Hint: Use the results of the previous query.)arrow_forward
- What does it mean for two tables to be union compatible?arrow_forwardUse SQL to complete the following exercises. Create a table named SALES_REP. The table has the same structure as the REP table shown in Figure 3-11 except the LAST _NAME column should use the VARCHAR data type and the COMMISSION and RATE columns should use the NUMBER data type. Execute the command to describe the layout and characteristics of the SALES_REP table.arrow_forwardAdd to the PADDLING table a new character column named DIFFICULTY_LEVEL that is three characters in length. Then set the default difficulty level value for all rows to the value MOD.arrow_forward
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