You are designing a database for an Azure Synapse Analytics dedicated SQL pool to support workloads for detecting ecommerce transaction fraud. Data will be combined from multiple ecommerce sites and can include sensitive financial information such as credit card numbers.

You need to recommend a solution that meets the following requirements:

• Users must be able to identify potentially fraudulent transactions.
• Users must be able to use credit card information as a potential feature in models.
• Users must NOT be able to access the actual credit card numbers.

What should you include in the recommendation?