1. A computer implemented model-driven method for generating platform specific code for a software component based software system, comprising: capturing customer requirements of the software component in a schema, wherein the software component includes a self contained software application which encapsulates and implements a single business process; modeling business-software architecture of the software component in a first level of the schema as business functions, business activities, forms, actions, and business rules, wherein each of the business functions comprises functions performed in the single business process of a software system, and wherein each of the business activities comprises activities performed in each of the business functions, and wherein each of the forms comprises semantics to capture and retrieve information for each of the business activities, and wherein each of the actions comprises tasks performed in each of the forms, and wherein each of the business rules comprises rules that govern each of the actions; modeling technical architecture of the software system from the modeled business-software architecture as components, system entry points, user interfaces, services, and methods in a second level of the schema, wherein each of the components corresponds to each of the business functions of the single business process, and wherein each of the system entry points corresponds to visual-interface elements of each of the business activities, and wherein each of the user interfaces with visual-interface elements corresponds to each of the forms, and wherein each of the services corresponds to each of the actions performed in each of the user interfaces, and wherein each of the methods corresponds to each of the business rules that are invoked in handling each of the services; defining events in the schema that connect the first level and the second level of the schema, wherein the events comprise entry events and exit events, and wherein each of the entry events is a stimulus that triggers a business function, a business activity, or a form and each of the exit events is a response from the respective business function, business activity, or form to the stimulus; defining links in the schema that represent interactions between the user interfaces, wherein each of the links comprises cross connections between the visual-interface elements in the user interfaces and the events associated with at least one of the business functions, business activities, and forms; defining integration services in the schema for each of the events, wherein integration services define cross connections for data updates between the events associated with at least one of the business functions, business activities, and forms in the first level and services and methods in the second level; mapping each of the business functions, business activities, forms, actions, and business rules in the first level to a corresponding one of the components, system entry points, user interfaces, services, and methods in the second level using the events, links, and integration services in the schema; loading the schema of the software component into a code generation repository; and generating the platform specific code of the software component from the code generation repository based on the modeled technical architecture, defined events, defined links, defined integration services, and mappings in the schema.