Planning on building repositories for Research Units (RU) of Science and Technology Ministry (STM) in Brazil motivated a two different versions installation implement of DSpace as a testbed for repositories experiments. Applied methodology comprised theoretical and empirical approaches, including: simulation, adjustment, estimate and software testing procedures. Operational and functional estimate employments proved that WUI properties increases in complexity as one goes further on administrative functionalities. Ingest and workflow progress simulations stated a valid new template design for submission processes. Such model reflected with appropriateness the format and content attributes of the form fields. Adjustment procedures allowed handling with external digital objects not liable for uploading to the repository’s server. Elements and qualifiers selected for the customization tests resulted in sustainable consistency for the derived metadata structure. Seemingly, it was possible to preserve Dublin Core schema properties thus having interoperability guarantee. It was determined that metadata customization is practicable over two different manners: codification or configuration. It recommends selection and adjustment of metadata elements and qualifiers be based on three tested criteria referred to form fields being customized.
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