CIS 211C Oracle - Database Programming and SQL
HOMEWORK: # 13
DUE:
Run the following queries in Oracle Application Express. Paste a copy of each query
Into this word document below the questions or notepad .txt file, save and return via
TalonNet:
Before doing any of the assigned questions below, remember that you are not to execute
the commands on the database table that are currently available in the APEX
environment. First you are to make copies of the tables and give the table the same
names but with copy_ proceeding the original names. For example for the d_cds table
the copied table would be called copy_d_cds.
For example you would use the following command to create the copy_d_cds table:
CREATE TABLE copy_d_cds
AS SELECT *
FROM d_cds;
If you need to start with a fresh copy of the copy tables, you can remove the table using
the following command format:
DROP TABLE copy_d_cds;
You might want to reference the student resource link on the class website and use the
creating a table handout.
Complete the following “Try It / Solve It” Exercises:
Section 8, Lesson 1 Exercise 1, 2, 3
1. Complete the GRADUATE CANDIDATE table instance chart. Credits is a foreign-key column
referencing the requirements table.
2. Write the syntax to create the grad_candidates table.
Column Name
student_id last_name
first_name Credits
graduation_date
Key Type
Nulls/Unique
FK column
Datatype
NUMBER
VARCHAR2 VARCHAR2 NUMBER DATE
Length
6
15
15
3
3. Confirm creation of the table using DESCRIBE.
Homework_13_Fa11.doc
DP Section 8
Section 8 Lesson 2, Exercise 1
1. Using the examples provided in Tell Me/Show Me, create each of the three time-zone tables.
TIMESTAMP WITH LOCAL TIME ZONE
INTERVAL YEAR TO MONTH
INTERVAL DAY TO SECOND
LONDON
TOKYO
NEW YORK
SHANGHAI
Section 8, Lesson 3 Exercise 3, 4, 5, 6, 8
Before beginning the practice exercises, execute a DESCRIBE for each of the following tables:
o_employees and o_jobs. These tables will be used in the exercises. You will need to know which
columns do not allow null values.
NOTE: If students have not already created the o_employees, o_departments, and o_jobs
tables they should create them using the four steps outlined in the practice.
a. Create the three o_tables – jobs, employees, and departments – using the syntax:
CREATE TABLE o_jobs AS (SELECT * FROM jobs);
CREATE TABLE o_employees AS (SELECT * FROM employees);
CREATE TABLE o_departments AS (SELECT * FROM departments);
Homework_13_Fa11.doc
DP Section 8
b. Add the Human Resources job to the jobs table:
INSERT INTO o_jobs (job_id, job_title, min_salary, max_salary)
VALUES('HR_MAN', 'Human Resources Manager', 4500, 5500);
c. Add the three new employees to the employees table:
INSERT INTO o_employees (employee_id, first_name, last_name, email, hire_date, job_id)
VALUES(210, 'Ramon', 'Sanchez', 'RSANCHEZ', SYSDATE, 'HR_MAN');
d. Add Human Resources to the departments table:
INSERT INTO o_departments(department_id, department_name)
VALUES (210,'Human Resources');
3.
In your o_employees table, enter a new column called “Termination.” The datatype for the new
column should be VARCHAR2. Set the DEFAULT for this column as SYSDATE to appear as
character data in the format: February 20th, 2003.
Add the following data:
employee_id = 210
first_name = Ramon
last_name = Sanchez
email = RSANCHEZ
hire_date = todays date
job_id = HR_MAN
4.Create a new column in the o_employees table called start_date. Use the TIMESTAMP WITH
LOCAL TIME ZONE as the datatype.
Homework_13_Fa11.doc
DP Section 8
5.
Truncate the o_job_description table. Then do a SELECT * statement. Are the columns still
there? Is the data still there?
6. What is the distinction between TRUNCATE, DELETE and DROP for tables?
8. Add the following comment to the o_jobs table:
"New job description added"
View the data dictionary to view your comments.
10. F_staffs table exercises:
a. Create a copy of the f_staffs table called copy_f_staffs and use this copy table for the
remaining labs in this lesson.
b. Describe the new table to make sure it exists.
c. Drop the table.
d. Try to select from the table.
e. Investigate your recyclebin to see where the table went.
g. Undrop the table.
Homework_13_Fa11.doc
DP Section 8