DEMONSTRATION
Multimedia Database: Authorization, Authentication,
Compatibility, and Usage
Arjan Hendriksen
ABSTRACT:
Based on the open
source HEAL multimedia database an University Medical
Center Nijmegen (UMCN) specific database has been built. This database is
primarily intended to store medical multimedia and learning objects for the
creation of new course material for the medical curriculum.
Therefore,
authentication and authorization are handled as follows: (1) Authentication of
docents is based on the UMCN-Active Directory and student authentication is
based on the central campus student user login of Blackboard. (2) Authorization
for every stored media file in the so-called
UMCN-HEAL-database. The authorization for media files was leveled to the
categories of (a) read rights (search and download),
(b) write rights (update and removal).
In order to
facilitate participation by departments in the UMCN-HEAL-project, authorization
rights of the media files could be assigned to three groups of users: (a) the
whole world, (b) UMCN docents & students, (c) the contributing author(s).
The departments of Pathology, Radiology and Dermatology departments will
participate in the pilot phase for storing clinical multimedia data.
The UMCN-HEAL
database contains learning objects of variable granularity such as medical
images, virtual microscopy images, text, videos. The
objects are either stored in the database or are located elsewhere and
referenced by links.
Users can define
relationships between media files based on the physical properties of a file
(such magnification) or based on content.
One of the main
features of the UMCN-HEAL database is that its content is compatible and
exchangeable with the HEAL database (http://www.healcentral.org).
In order to ensure
the quality of the database content, all contributions are peer reviewed. That
is, a colleague of the contributor (preferably the department head or course
director) judges the quality of the materials and determines whether or not it
can be used to create new course content.
The program consists
of a server-based JAVA application with an web-based front-end. (JSP).[Server
specs: Apache Tomcat 4.1, Apache Web server 2.0, MySQL 4.1, Linux 2.4]
BENEFIT TO PARTICIPANTS ATTENDING SESSION:
Many institutions
want to use a multimedia database, but also need a fine-grained authentication
& authorization system build-in. This demonstration will allow interested
colleagues to share their ideas and experiences. In addition, we could talk
about potential future collaborative efforts.
Arjan Hendriksen,
M.Sc.
University Medical
Center Nijmegen
CIO Group ñ 241
P.O.Box 9101
Geert Grooteplein 21
6500 HB Nijmegen
the Netherlands
Phone: +31 24 361 87
75
mailto:a.hendriksen@cio.umcn.nl
CO-AUTHORS:
Sebastian
Uijtdehaage, PhD
Lambert G. Poels, Dr.
Assistant Professor
of Medicine
Instructional Design
and Technology Unit
UCLA School of
Medicine 60-051 Center for the Health Sciences
Box 951722
Los Angeles, CA 90095
University Medical
Center Nijmegen
Head CIO Group ñ 241
P.O.Box 9101
Geert Grooteplein 21
6500 HB Nijmegen
the Netherlands
Phone: 310/794-9009
+31 24 361 42 86
Fax: 310/267-0320