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Publication
Strategies for digital preservation of information
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| 6.13 MB | Adobe PDF |
Authors
Abstract(s)
With the advent of the digital era, the digital information produced has grown
exponentially. According to Seamus Ross, digital information is a cultural product [1]. The
growing dependency on digital information is changing the way our culture is recorded.
There is no longer a strict relation between the logical structure of information, the physical
storage support and its interpretation. Internet provided the right environment not only for
the thriving of new communities but also for the growth of the information produced by
them.
Software and hardware have also evolved. Along with them came new capabilities of
producing more accurate and space demanding information. One good example is
multimedia content, audio and video, but there are many more. This new reality rose an
awareness for the need to preserve all this information for future generations to come. Unlike
their analogue peers, digital formats require a different effort to maintain as they are exposed
to such threats as the deterioration of the medium they are stored in or formats obsolescence.
A number of actions must be taken to ensure their long-term access. To address this need,
digital repositories have evolved, accommodating now sets of features capable of
implementing different strategies for the digital preservation of information.
This thesis presents an analysis of the current state of the art open source repository
software for the digital preservation of information identifying the five most relevant
solutions. From those solutions, we picked the most feature rich and broader user community
software, RODA, to which we propose and implement further improvements to an existing
preservation strategy: federation. These improvements consist in building into the system an
interoperability mechanism capable of allowing RODA to interact with other systems.
This improvement is made by implementing a prototype composed by a CMIS server
inside the repository, which communicates with client applications through the
implementation of the CMIS protocol. We name this prototype RODA OpenCMIS Server,
or in short, RODA-OCS. The prototype allows RODA to expose contents stored inside it
publicly, under a controlled environment, in an authenticated and secure way. This goal is
achieved by integrating our prototype with RODA native permissions system. RODA-OCS
not only implements a file browser mechanism for content navigation but also a query engine capable of searching and retrieving contents based on their metadata, either technical or
descriptive.
Finally, we present a demonstration of the functioning of RODA-OCS. Through the
use of a dataset conceived to test the functionalities
Description
Keywords
Dados digitais Preservação Repositórios Código aberto