DATABASE SYSTEMS
13th Edition
ISBN: 9780357095607
Author: Coronel
Publisher: CENGAGE L
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Textbook Question
Chapter 8, Problem 8P
Using the EMP_2 table, write the SQL code that will add the attributes EMP_PCT and PROJ_NUM to EMP_2. The EMP_PCT is the bonus percentage to be paid to each employee. The new attribute characteristics are:
EMP_PCT NUMBER(4,2)
PROJ_NUM CHAR(3)
Note: If your SQL implementation requires it, you may use DECIMAL(4,2) or NUMERIC(4,2) rather than NUMBER(4,2).
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Use this info to answer the questionTABLE NAME: students COLUMNS:student-no NUMBER(6)
fname VARCHAR2(12)
lname VARCHAR(20) sex CHAR(1)major VARCHAR2(24)
7. Write a SQL statement that will display the student number(studentno),firstname(fname),and last name (lname) for all students who are female (F) in the table named students.
Use the following table to find the OUTPUT of the following SQL queries:
Table Name: Patients
MEDICAL_NO
FIRST_NAME
SUR_NAME
DOB
GENDER
PHONE
FAX
BLOOD TYPE
WEIGHT
SMOKER
PCR TEST
1001
Said
Alalawi
12-Jun-2001
Male
98877445
22114454
A
68
NO
Negative
1002
Othman
Mualla
20-Apr-2000
Male
B
78
YES
Positive
1003
Sameera
Bader
19-Oct-2005
Female
25541122
52
NO
Positive
1004
Fahad
Alhinai
24-Feb-2004
Male
91122544
AB
Negative
66
YES
1005
Shamsa
Alfahdi
15-Sep-2002
Female
B
35
NO
Negative
SELECT INSTR(first name, 'h')
FROM patients
WHERE medical no = 1002;
Answer:
Use the following table to find the OUTPUT of the following SQL queries:
Table Name: Patients
MEDICAL_NO
FIRST NAME
SUR_NAME
DOB
GENDER
PHONE
FAX
BLOOD TYPE
WEIGHT
SMOKER
PCR TEST
1001
Said
Alalawi
12-Jun-2001
Male
98877445
22114454
A
68
NO
Negative
1002
Othman
Mualla
20-Apr-2000
Male
B
78
YES
Positive
1003
Sameera
Bader
19-Oct-2005
Female
25541122
52
NO
Positive
1004
Fahad
Alhinai
24-Feb-2004
Male
Negative
91122544
AB
66
YES
1005
Shamsa
Alfahdi
15-Sep-2002
Female
35
NO
Negative
SELECT NULLIF(phone, fax)
FROM patients
WHERE medical no = 1001;
Answer:
Chapter 8 Solutions
DATABASE SYSTEMS
Ch. 8 - Prob. 1RQCh. 8 - Explain why it might be more appropriate to...Ch. 8 - What is the difference between a column constraint...Ch. 8 - What are referential constraint actions?Ch. 8 - What is the purpose of a CHECK constraint?Ch. 8 - Explain when an ALTER TABLE command might be...Ch. 8 - What is the difference between an INSERT command...Ch. 8 - What is the difference between using a subquery...Ch. 8 - What is the difference between a view and a...Ch. 8 - Prob. 10RQ
Ch. 8 - Prob. 11RQCh. 8 - Prob. 12RQCh. 8 - Write the SQL code that will create only the table...Ch. 8 - Having created the table structure in Problem 1,...Ch. 8 - Prob. 3PCh. 8 - Write the SQL code that will save the changes made...Ch. 8 - Write the SQL code to change the job code to 501...Ch. 8 - Write the SQL code to delete the row for William...Ch. 8 - Write the SQL code to create a copy of EMP_1,...Ch. 8 - Using the EMP_2 table, write the SQL code that...Ch. 8 - Using the EMP_2 table, write the SQL code to...Ch. 8 - Prob. 10PCh. 8 - Prob. 11PCh. 8 - Prob. 12PCh. 8 - Prob. 13PCh. 8 - Prob. 14PCh. 8 - Prob. 15PCh. 8 - Create the CUSTOMER table structure illustrated in...Ch. 8 - Create the INVOICE table structure illustrated in...Ch. 8 - Prob. 18PCh. 8 - Prob. 19PCh. 8 - Create an Oracle sequence named CUST_NUM_SEQ to...Ch. 8 - Create an Oracle sequence named INV_NUM_SEQ to...Ch. 8 - Prob. 22PCh. 8 - Modify the CUSTOMER table to include the customers...Ch. 8 - Prob. 24PCh. 8 - Prob. 25PCh. 8 - Create a trigger named trg_updatecustbalance to...Ch. 8 - Prob. 27PCh. 8 - Prob. 28PCh. 8 - Write a trigger to update the customer balance...Ch. 8 - Prob. 30PCh. 8 - Create a trigger named trg_line_total to write the...Ch. 8 - Create a trigger named trg_line_prod that...Ch. 8 - Create a stored procedure named prc_inv_amounts to...Ch. 8 - Create a procedure named prc_cus_balance_update...Ch. 8 - Modify the MODEL table to add the attribute and...Ch. 8 - Prob. 36PCh. 8 - Modify the CHARTER table to add the attributes...Ch. 8 - Write the sequence of commands required to update...Ch. 8 - Write the sequence of commands required to update...Ch. 8 - Write the command required to update the...Ch. 8 - Write the command required to update the...Ch. 8 - Write the command required to update the...Ch. 8 - Prob. 43PCh. 8 - Create a trigger named trg_char_hours that...Ch. 8 - Create a trigger named trg_pic_hours that...Ch. 8 - Create a trigger named trg_cust_balance that...Ch. 8 - Write the SQL code to create the table structures...Ch. 8 - The following tables provide a very small portion...Ch. 8 - For Questions 49-63, use the tables that were...Ch. 8 - Prob. 50PCh. 8 - Write a single SQL command to increase all price...Ch. 8 - Alter the DETAILRENTAL table to include a derived...Ch. 8 - Update the DETAILRENTAL table to set the values in...Ch. 8 - Alter the VIDEO table to include an attribute...Ch. 8 - Update the VID_STATUS attribute of the VIDEO table...Ch. 8 - Alter the PRICE table to include an attribute...Ch. 8 - Prob. 57PCh. 8 - Prob. 60P
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