Data Transparency in a Decentralized Exchange (DEX) refers to the ability for all users to access and verify transaction records that are stored on the blockchain. This feature ensures that every transaction is publicly recorded and immutable, allowing users to audit the exchange's operations and verify the integrity of their trades. By providing transparent access to transaction data, users can build trust in the platform, as they can independently confirm that trades are executed as intended and that the exchange operates fairly without hidden manipulations or discrepancies.