Karel has participated in all aspects of the solutions lifecycle from problem structuring, feasibility, solutions architecture selection, technology scanning, negotiating with vendors, implementation, deployment and user support.

These solutions entailed products for desktop, terminals, client/server, dynamic web content and multi-tier web applications addressing persistence using XBase libraries, RDMS’s (Oracle, MS, Sybase, Interbase), ORM’s (Object-Relational Mappers), NoSQL, XML-technologies and object stores.

Developed products ranged from simple CRUD systems with extensive reporting to decision support systems with high-value-addition processing.

Solutions were developed with degrees of tool-support ranging from little or none up to fully generated solutions.

Karel closely tracks processes and methods and their match to organizational capacity.

Karel van der Walt presents 2 Events:

• From models to hosted OpenAPI Specification (OAS) at South Africa 2019

• Modularizing computation via Common Table Expressions (CTEs) at South Africa 2021