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Piql and OAIS
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reference model
DATA MANAGEMENT
The data management entity maintains the database
that contains the repository’s information. It executes
query requests and generates results.
The Piql database is the core of the operational busi-
ness. It updates and manages the metadata and the in-
formation packages (AIPs). It also keeps track of all reels,
jobs and files, provide reports, billing and operational
dashboards. The Piql database integrates with the Ware-
house Management System.
The database is backed up regularly, but in worst case
scenario, it can be reconstructed from the piqlFilm. This
is done by reading the table of content written at the
beginning of every piqlFilm, and then recreating the da-
tabase.
ACCESS
Piql provides a user-friendly client interface where the
data owner can search their files by metadata and then
restore the digital information.
On request, Piql provides AIP intergration to the data
owners’ document management systems.
ADMINISTRATION
An administration entity manages the daily operations
of the archive. It attains submission agreements, defines
which standards to accept and what rights the reposito-
ry has, develops policies and standards. It handles cus-
tomer service and relationship with data owners.
The administration entity as defined in the OAIS model
would be the local Piql service provider.
PRESERVATION METADATA
Metadata is information about information, and is the
core of any information retrieval system. It should be
written in a standard, well-known language, such as
XML. The choice of metadata scheme greatly affects
the digital repository’s long-term ability to maintain and
preserve its digital assets.