Sybase 510-308 targets PowerBuilder developers seeking professional proficiency in architecting enterprise-level client-server and multi-tier applications within the 9.0 environment. Candidates must demonstrate deep technical command of DataWindow technology, including complex object manipulation, nested reports, and advanced buffer management. Proficiency extends to EJB integration, Web DataWindow configuration, and n-tier distributed computing using the PowerBuilder Object Request Broker. Further requirements encompass application deployment methodologies, database connectivity via Native or ODBC drivers, and sophisticated PowerScript debugging techniques. The examination validates expertise in component-based development, effective use of PowerBuilder Foundation Class libraries, and the optimization of graphical user interface performance within Windows-based development architectures.