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(Answered)-Using CREATE TABLE AS subquery syntax, create a seq_d_songs table


Using CREATE TABLE AS subquery syntax, create a seq_d_songs table of all the columns in the DJ on Demand database table d_songs. Use the SELECT * in the subquery to make sure that you have copied all of the columns.


CIS 207 Oracle - Database Programming and SQL

 

HOMEWORK: # 14

 


 

DUE:

 


 

Sections 16 & 17

 

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:

 


 

SECTION 16 LESSON 1 ? Working With Sequences

 

Exercise #1, 2, 3, 4, 6

 

Oracle Academy 10 Database Programming with SQL Try It / Solve It

 

1. Using CREATE TABLE AS subquery syntax, create a seq_d_songs table of all the columns in the

 

DJ on Demand database table d_songs. Use the SELECT * in the subquery to make sure that you

 

have copied all of the columns.

 

2. Because you are using copies of the original tables, the only constraints that were carried over

 

were the NOT NULL constraints. Create a sequence to be used with the primary-key column of the

 

seq_d_songs table. To avoid assigning primary-key numbers to these tables that already exist, the

 

sequence should start at 100 and have a maximum value of 1000. Have your sequence increment by

 

2 and have NOCACHE and NOCYCLE. Name the sequence seq_d_songs_seq.

 


 

3. Query the USER_SEQUENCES data dictionary to verify the seq_d_songs_seq SEQUENCE

 

settings.

 


 

Homework_14_Sp16.doc

 

sections 16 & 17

 


 

4. Insert two rows into the seq_d_songs table. Be sure to use the sequence that you created for the ID

 

column. Add the two songs shown in the graphic.

 


 

ID

 


 

TITLE

 

Island Fever

 

Castle of Dreams

 


 

DURATION

 

5 min

 

4 min

 


 

ARTIST

 

Hawaiian Islanders

 

The Wanderers

 


 

TYPE_CODE

 

12

 

77

 


 

6. What are three benefits of using SEQUENCEs?

 


 

SECTION 16 LESSON 2 ? Indexes and Synonyms

 

1. What is an index and what is it used for?

 


 

4. Create a nonunique index (foreign key) for the DJ on Demand column (cd_number) in the

 

D_TRACK_LISTINGS table. Use the Oracle Application Developer SQL Workshop Data Browser

 

to confirm that the index was created.

 


 

6. Use a SELECT statement to display the index_name, table_name, and uniqueness from the data

 

dictionary USER_INDEXES for the DJ on Demand D_EVENTS table.

 


 

7. Write a query to create a synonym called dj_tracks for the DJ on Demand d_track_listings table.

 


 

SECTION 17 LESSON 1 ? Controlling User Access

 

Ex. 1, 2, 4, 5, 9

 

1. What are system privileges concerned with?

 


 

Homework_14_Sp16.doc

 

sections 16 & 17

 


 

2. What are object privileges concerned with?

 

4. What commands are necessary to allow Scott access to the database with a password of tiger?

 


 

5. What are the commands to allow Scott to SELECT from and UPDATE the d_clients table?

 


 

9. If you create a table, how can you pass along privileges to other users just to view your table?

 

SECTION 17 LESSON 2 ? Creating and Revoking Object Privileges

 

Ex. 5

 

5. What is the syntax to accomplish the following?

 

a. Create a role of manager that has the privileges to select, insert and update and delete from the

 

employees table

 


 

b. Create a role of clerk that just has the privileges of select and insert on the employees table

 

c. Grant the manager role to user scott

 

d. Revoke the ability to delete from the employees table from the manager role

 


 

SECTION 17 LESSON 3 ? Regular Expressions

 

Ex. 1

 

1. Working with the employees table, and using regular expressions, write a query that returns

 

employees whose first name starts with a ?S? (uppercase) followed by either a ?t? (lowercase) or ?s?

 

(lowercase).

 


 

Homework_14_Sp16.doc

 

sections 16 & 17

 


 

 


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