The database was constructed using PostgreSQL, an open-source, relational database management system primarily based on the structured query language (SQL) that has strong support for NoSQL features. This allowed the database to have the preferred functionalities of the relational model (e.g., data normalization, data redundancy, error checking, etc.), while allowing for storage flexibility where attributes may be dynamic. Preserving relationships is also a key factor in representing sample provenance in a robust manner, which makes certain aspects of the relational model attractive for the sake of interoperability with other community databases. At the same time, PostgreSQL can handle storage and queries on a variety of complex data types, including JSON, XML, and binary objects, which is not a feature that is always available for SQL databases. The mix of SQL and NoSQL features allows the implementation of a data model that provides more convenient and robust organization for structured aspects (process stages, e.g., film deposition) and flexible storage for unstructured information (process operations, e.g., coating parameters, and associated metadata fields). A complete description of the DBMS table schema, based on the data model described earlier, is available in the Supporting Information.