RTS Questionnaire · Question 43 of 52 · file: answers/q43.html
Have you designed Entity-Relationship diagrams, database schemas, API contracts, component/service architecture, or complex business workflows?
Data ModellingAPI DesignArchitecture
✅ Yes — I have produced all of these artefacts and treat them as first-class deliverables of the design phase.
🧪 Interactive proof: this answer has its own page with a live design-documentation workflow, the ER and dictionary generator, the architecture diagram generator and the documentation pipeline behind it — open the Q43 design-documentation proof →
Technical detail
- 🗂️ ER diagrams and database schemas — conceptual/logical/physical models, normalisation with justified denormalisation, referential integrity, keys and constraints, indexing plan, audit/history tables, partitioning strategy and migration scripts for relational engines (SQL Server, PostgreSQL, Oracle, MySQL) and document/graph stores where appropriate.
- 🔌 API contracts — resource models, endpoints and payloads, status/error semantics, pagination and filtering conventions, versioning and authentication flows, published as OpenAPI/GraphQL schemas so front-end, QA and partners integrate against a frozen contract.
- 🏛️ Component/service architecture — bounded contexts and service decomposition, layer and module diagrams, integration maps (sync vs. event-driven), dependency and data-ownership rules, deployment topology and cross-cutting concerns (security, caching, observability).
- 🔀 Complex business workflows — swimlane and state diagrams for multi-actor processes, approval chains, SLA timers, exception/compensation paths and notifications — then implemented as orchestrated sagas or workflow engines.
📐 Tooling: UML/ER modelling tools, C4-style diagrams, PlantUML/Mermaid-as-code artefacts kept in the repository next to the implementation, so documentation evolves with the code instead of rotting in a shared drive.
🧾 CV evidence: CV: business modelling, architectural mechanisms and design-pattern competencies; ER/schema work across Oracle, SQL Server, PostgreSQL and NoSQL platforms; SOA/BPEL/BPM workflow design (Oracle BPM, Bonita BPM integration) in the enterprise track.