Disclosed herein are system, method, and computer program product embodiments for supporting different data sources provided in developing applications. An embodiment operates by a processor receiving the application descriptor, which includes a first data source for providing a first portion of data for the application, the first data source providing the first portion of data as a first data type that is incompatible with the application. The processor can then determine whether the first data source provides the first portion of data as the first data type and request based on the determination, the first portion of data from the first data source. The processor can thereafter receive a modified first portion of data in the second data and create a model for the application based thereon.