A computer-implemented schema-independent method of modeling data from diverse sources is described. A server transmits a blueprint to a client computer that is in communication with the server. The blueprint defines an application that runs on the client computer and is designed for visualizing and interacting with data from at least a first data source and a second data source. Responsive to a data fetch message from the application running on the client computer: receiving, by the server, data from the first data source; receiving by the server, data from the second data source; transforming, by the server, the received data from the first data source and the second data source into a semantic data format; and storing, by the server, the transformed data as a first data set.