To capture the full provenance of the interaction between the computational and lab experiments, we store additional parameters in both the AiiDA and the ELN database. The AiiDA database is used by the AiiDA workflow engine to orchestrate the workflows, to which AiiDAlab provides the frontend. To this aim, we extended the ELN database schema to include the source type (simulation, experiment, literature), the database URI, and the UUID of the data node from the AiiDA database. Correspondingly, in the AiiDA database, we store the ELN database URI, the type of the ELN, the sample UUID, the attachment filename, and the data type. This information is stored in the so-called "extras" of a node representing the structure in the AiiDA database (of type CifData or StructureData).