Identifies a set of attributes that satisfied a formal input. Formal Input name References a module execution that produced the attribute set fed to this input. Identifies a set of attributes that were generated by a formal output. Formal Output Name Reference to an attribute. References an attribute by LSID or id local to document. Describes the data dependency of a module run. ModuleRun is meant to describe the relationships a module run creates, not the specifics of its execution. A Module may in fact have been executed more than once. Isolating execution specifics from the relationship allows us to acknowledge that multiple executions occured without storing two copies of their identical output. Non-deterministic modules may have only one ExecutionHistory per ModuleRun because their results are not guaranteed to be the same for identical inputs. Dataset this was run against. References a module by LSID Module Execution Dependence. How long the module took to run. When the module was executed. Describes all known history of data.