Graph workspace for heterogeneous graph data

A method may include receiving a workspace definition defining a graph workspace for a heterogeneous graph having a plurality of vertex tables and/or edge tables. Upon validating the workspace definition, the graph workspace for the heterogeneous graph may be created in accordance with the workspace definition. The graph workspace may include a label for each table of the plurality of vertex tables and/or edge tables comprising the heterogeneous graph. Each vertex and edge of the heterogeneous graph may be uniquely identified based on a label of a corresponding table and one or more key attributes. A graph processing algorithm operating on the heterogeneous graph may be executed based on the graph workspace. Related systems and computer program products are also provided.