Embodiments of the invention use incomplete metadata, automated heuristics, and user input to construct a data model implemented by a set of commands used in a scripting environment. A combination of a static analysis and a runtime analysis of the scripting environment may be used to determine the data model. Commands that enumerate resources are identified. Return types for the commands are discovered either from a definition of the command or by running the command with default parameters. Properties for the return types are identified and key fields are identified for indexing. Relationships between the return types are identified, and additional commands associated with the return types are identified. The return type properties are analyzed to identify updatable return types. A data model of the scripting environment is created from the collected information.