Getting Started with InfoSphere Data Architect

80 Getting started with InfoSphere Data Architect
You can also create a domain model to specify when data is private and requires masking,
such as a student or a teacher identifier.
By default, data masking is not enforced, but to ensure privacy of sensitive data elements,
you should enforce data privacy.
With an atomic domain, you typically specify privacy rules for four areas:
Classification: In a test environment, how should this data be classified? Is it
personally identifiable information, or is it confidential?
Enforcement: In a test environment, is privacy for this atomic domain required, not
required, or simply a best practice?
Privacy policy type: What type of information do you want to mask in a test
environment?
Privacy policy: What type of masking should a test system use?
4.1.2.1 Creating an atomic domain
You decide that you should first secure student social security numbers. To do this, you will
create a new atomic domain, SSN, that will display a random social security number to
mask that sensitive piece of information.
This atomic domain creates a unique data type within the data design project, and you can
use this special data type for various models throughout your project. This domain model
can be used throughout the design process to define the policies that you should apply to
the student information stored in this model. This will help you ensure consistency across
your data models.
Let's create the SSN and STUDENT_ID atomic domains:
1. Right-click on the STUDENT_PII_ROOT package, then select Add Data Object ->
Atomic Domain. A new atomic domain object is created in the Data Project
Explorer under the root domain package.
2. Name the atomic domain object SSN.
3. Define the base data type of the SSN atomic domain object in the General tab of
the Properties view. Since social security numbers contain both numbers and
dashes, you should specify a base data type of CHAR(11).
4. Specify the data privacy properties for this atomic domain data type:
a. Open the Data Privacy tab of the Properties view.
b. Specify the following settings to mask the students' social security numbers:
◦ Classification: Personally Identifiable Information
◦ Enforcement: Required
◦ Privacy Policy Type: Social Security Number (SSN)