EM12C | Data Masking | How to make my column sensitive

Question

Hello All,
EM : 12c
DB: 11.2.0.3
I have a table with column "Salary" and after doing the 'Data Discovery and Modelling' on my schema i do not see Oracle has identified by column as "Sensitive".
How do i make it sensitive so that i can "mask" it ?
TIA,
JJ

Answer 1

Steps for data masking feature in 12c Cloud Control(12.1.0.1):
Creating only a masking definition does not protect data. You need to first create the definition, which defines the columns to be masked, then proceed with the actual masking to ensure data safety.
Each masking definition requires one or more formats, which define the format used to mask the selected data. You can create the formats before or after creating the masking definition.
Note: Before creating or editing a masking definition, be aware of the following advisory information:
    - Make sure the format you select does not violate check constraints and does not break any applications that use the data.
    - For triggers, PL/SQL, and so forth, Data Masking recompiles the object.
    - Exercise caution when masking partitioned tables, especially if you are masking the partition key. In this circumstance, the row may move to another partition.
    - Data Masking does not support clustered tables, masking information in object tables, XML tables, virtual columns, and so forth. However, relational tables are supported for the masking.
    - If objects are layered on top of a table such as views, materialized views, PL/SQL, and so forth, they are recompiled to be valid.
a. To create data masking format:
1. Login to 12c Cloud Control
2. Expand the Enterprise drop down menu
3. select Quality Management, then Data Masking Formats
4. Click on "Create" to go to the Create Format" Page
5. In the page displayed, enter the necessary details to create Format:
   a. General Information:
         Name: Name of the Format
         Sensitive Column Type: Select a column type the list
         Description: Description of Format
   b. Format Entries: Select a format from the drop down list, then click Go.
                                In the page displayed, select the list of values and click OK
                               Optionally specify the name of a post-processing function
   c. Click OK to create the Data Masking Format
b. To create data masking definition:
1. Login to 12c Cloud Control
2. Expand the Enterprise drop down menu
3. select Quality Management, then Data Masking Definitions
4. Click on "Create" to go to the Create Masking Definition page
5. In the page displayed, enter the necessary details to create masking definition :
    a. General Information:
         Name: Name of the Masking definition
         Application Data Model: Provide required Application Data Model(ADM) name from the list
         Reference Database: Provide required database name
         Description: Description of data masking definition
    b. Workloads: Check Ensure Workload Masking Compatibility if you want to mask Capture files and SQL Tuning Sets. This is optional
    c. Columns: Click Add to go to the Add Columns page, where you can choose which sensitive columns in the ADM you want to mask.
    d. Data Masking Options: Expand Show Advanced Options and decide whether the selected default data masking options are satisfactory (Optional)
    e. Click OK to create Data Masking Definition
c. Performing the Masking Operation
    1. From the Data Masking Definitions page, click Generate Script. The Script Generation Results page appears, which shows the list of database commands to be used to mask the selected columns
    2. Either click Clone and Mask or Schedule Job
For more details, refer the following document:
http://docs.oracle.com/cd/E11882_01/server.112/e16540/tdm_data_masking.htm#CEGBFFDJ
Oracle® Database Real Application Testing User's Guide
Chapter 15: Masking Sensitive Data
HTH
Mani