This case study covers database security concepts like authentication, user profiles, and authorization. It creates database tables for accounts and purchases, sets limits on the user profile "meeralimit" like password reuse and attempts, tests password functions, creates tablespaces and roles, and assigns privileges to roles like viewing purchases. Values are inserted into the accounts and purchases tables to test the implemented security features.

1. https://www.oercommons.org/authoring/21389-database-security-slideshare
DR.GIRIJA 1

2. https://www.oercommons.org/authoring/21389-database-security-slideshare
DR.GIRIJA 2
CASE STUDY -1
This case study covering three units such as unit 1 authentication, unit 2 User profile and
Unit 3 Authorization.
In this case study below given Account and Purchase table’s information are used. In the
“HR” schema create and insert values of Account and Purchase table.
The user Meara profile “meeralimit” has following limits, the user can reuse the password
after 15 days, the user allow to try two incorrect password, suppose both the attempts
she fail to give correct password then it never open the account automatically. The
password is valid only 45 days.
The password function “checkpwd” which will restrict the meeralimit profile has at least
has one character and one digit and one punctuation. Test the checkpwd is
implemented in the user Meera for changing password as “meera”, if it is error then
change password as “meera$456”. Display the resource name, limits of profile
meeralimit.
Create default permanent tablespace as “meera_ts” with quota 500k to Meera. Create
two role as salaried_customer and another one is Normal_customer. Assign
salaried_customer role to Meera by default. The salaried_customer has select
privileges of purchase table. Raju has Normal_customer type. Create synonym for
purchase table as “pursyn”. Assign select privilege of pursyn to Raju. Display
pucharase_no, amount column of pursyn.

3. https://www.oercommons.org/authoring/21389-database-security-slideshare
DR.GIRIJA 3
Account Table
Account_no uname Min_balance
123 Meera 100
456 Anand 100
789 Raju 250
Create table account (account_no number (6) primary key, uname varchar2 (15),
min_balance number (5));
Insert into account values (123,’meera’, 100);
Insert into account values (456,’anand’, 100);
Insert into account values (789,’raju’, 250);
Purchase Table
Purchase_no amount Customer_type Account_no
1 300 Salaried_customer 456
2 400 Salaried_customer 456
3 380 Normal_customer 789
4 450 Salaried_customer 123
5 250 Normal_customer 789
Create table purchase (pno number (5) primary key, amount number (5), ctype varchar2
(20), account_no number (6) references account (account_no));
Insert into purchase values (1, 300,’salaried_customer’, 456);
Insert into purchase values (2, 400,’salaried_customer’,456);
Insert into purchase values (3, 380,’Normal_customer’, 789);
Insert into purchase values (4, 450,’salaried_customer’, 123);
Insert into purchase values (5, 250,’Normal_customer’, 789);