Jin-You Zhu

PowerBuilder, a 4GL RAD tool, has extended its productivity to Web services components and application development. With this RAD environment, developers may not only make use of Web services, creating new Web services components and applications, but also easily migrate existing components to Web services. This article discusses how to consume different kinds of Web services in PowerBuilder applications and how to produce PowerBuilder components as Web services in PowerBuilder 9. Introduction Web services are loosely defined as the use of Internet technologies to make distributed software programs talk to each other. Programs that want to interact with one another over the Web must be able to find one another. They also must figure out what the expected interaction patterns are, such as what methods the services offer, what data types the services accept, what pro... (more)