Platform note
Delphi
Delphi is a rapid application development environment for desktop and client-server software, especially in Windows business environments. It was often used to build durable operational systems with rich forms, direct database access, and tightly coded business rules.
Many Delphi applications remain in use because they are fast, stable, and deeply adapted to specialist business processes.
What it was typically used for
Organizations used Delphi for finance tools, manufacturing support, logistics, healthcare administration, retail back-office systems, booking tools, and bespoke line-of-business applications with thick desktop clients and local reporting.
Why it still matters in rescue work
Delphi systems often outlast the people who built them. When that happens, the main challenge is not understanding the language itself but reconstructing how forms, data modules, queries, reports, and component libraries combine to express the actual operating rules of the business.
Artifacts to inspect when extracting business logic
- Pascal source units: business rules, calculations, services, and workflows.
- Form definitions: user interactions, event bindings, and control structure.
- Data modules: shared datasets, connection logic, and transaction handling.
- Embedded SQL and query components: data shaping, filters, and write behavior.
- Reports and print routines: operational outputs, grouping, and totals.
- Third-party component dependencies: hidden behavior inherited from proprietary libraries.