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INF3707 Assignment 3 solution 2024

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Course
Database Design and Implementation (INF3707)

Institution
University Of South Africa (Unisa)

INF3707 Assignment 3 solution 2024: To perform the following assignments, refer to the tables in the JustLee books database. 1.1 Create a sequence for populating the Custeomer# column of the CUSTOMERS table. When setting the start and the increment values, beer in mind that data already exist ...

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Uploaded on August 2, 2024
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inf3707

Institution
University of South Africa (Unisa)
Course
Database Design and Implementation (INF3707)

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INF3707 2024 ASSIGNMENT 3
SOLUTIONS

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, Question 1

1.1 Create a sequence for populating the Custeomer# column of the
CUSTOMERS table. When setting the start and the increment values, beer in
mind that data already exist in the table. Hence, you need to know the last
customer number stored in the database. The options should be set not to
cycle the values and not to cache any values. No minimum or maximum
values should be declared. (2 marks)

create sequence customers_customer#_seq
increment by 1
start with 10
nocache
nominvalue
nomaxvalue
nocycle;

1.2 Add a new customer row by using the sequence created in Question
1.1. the only data currently available for the customer is as follows: last name
= Shoulders, first_name = Frank, and zip = 23567. (3 marks)
INSERT INTO customers (customer#, lastname, firstname, zip) VALUES
(cust_seq.NEXTVAL, 'SHOULDERS', 'FRANK', '23567');

Question 2

2.1 create the user John with a password that expire with the role of
sales_person (3 marks)
CREATE USER John
IDENTIFIED BY CRYSTAL27
PASSWORD EXPIRE;
GRANT salesperson TO John;

2.2 As a salesperson, John has full responsibility for the CUSTOMERS
table of the JUSTLee Books and need to have object privileges to perform
any activity on the customers table. John needs to have the right to grand the
privileges to other users. (2 marks)
GRANT All
ON customers

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