Visual FoxPro 6.0 has several enhancements for building better COM components. Improved type libraries ensure that Visual FoxPro components work well with other applications. Support for building components that are used in Web applications offers scalability. Full support for Microsoft Transaction Server makes managing and scaling Visual FoxPro components easy. Component-based applications built using the Windows DNA framework consist of multiple tiers, each providing a service.
Front ends provide the user interface.
Middle tiers provide business services and handle tasks such as data retrieval, manipulation, validation, and enforcement of business rules. The final tier is where the data resides. Developers building components can reuse existing code. Improved Type Libraries Type libraries contain information about the properties and methods of a COM component. When a COM component is built, a type library is also created.