Database Interaction Diagram

A Database Interaction Diagram is a visual representation of data flows, operations, and constraints between applications and databases. It is essential for compliance with ISO/IEC 27701:2019 and GDPR Article 25 (Privacy by Design), ensuring data-centric security controls are documented and verifiable. Unlike standard Data Flow Diagrams (DFD), it focuses on data state changes and transactional integrity, making it a critical component of the technical control-based risk assessment process. It serves as a blueprint for how sensitive information is handled, stored, and protected within the digital ecosystem.

In enterprise risk management (ERM), the application follows three stages: First, Data Mapping — documenting all interactions between applications and databases to satisfy ISO/IEC 27701 inventory requirements. Second, Risk Assessment — identifying risks at each interaction point, such as unauthorized access or data leakage, and applying NIST CSF Protect functions. Third, Verification — auditing the diagram against actual system implementation to ensure controls like encryption and access management are effective. Companies using these diagrams typically see a 40% reduction in data-related compliance costs and a 60% decrease in technical privacy violations during audits.

Taiwan enterprises face three primary challenges: Lack of documentation culture, which can be addressed by making documentation a prerequisite for ISO 27701 certification; Technical talent shortage, requiring a collaborative approach between IT and legal teams; and Tooling-related inconsistency. To overcome these, enterprises should adopt standardized UML notation and invest in data-centric security tools. A phased approach—starting with a pilot project in 90 days followed by enterprise-wide rollout—is recommended to ensure sustainable compliance and ROI.

Winners Consulting Services Co., Ltd. specializes in Database Interaction Diagram for Taiwan enterprises, delivering compliant management systems within 90 days. Free consultation: https://winners.com.tw/contact