nbul 2004
ds would
ure effort
vided by
t will be
attributes
extracted
| require
asets, the
metadata.
is a guide
et
je “quick
ection of
JPEG ot
an to help
; similar
ferences.
y FGDC
ly within
| size and
ile based
yrtals and
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B2. Istanbul 2004
3.6 Metadata Catalogue Browser
The method of accessing the CIS Archive Metadata Catalogue
is a Geospatial Metadata Browser. At least two types of
Browsers will be supported; an internal Browser based upon
ArcGIS technology and a pubic Browser based on generic
Internet technology.
The internal Browser will be built as an application layer over
ArcGIS technologies such as ArcMap with low level
customizations provided by ArcObjects. The public Browser is
light weight and user friendly application that runs within the
client environment. The Browser is self-contained and does not
require specialized hardware, extensive software resources or
product licensing.
The public Browser, coupled with a Z39.50 component,
presents the user with a consistent view of the repository and
provides the tools necessary for displaying and manipulating
selected sets of records from the Metadata Catalogue. Filtering
metadata by theme, by location, by time and by attributes is
provided along with the standard display functions for
changing the area of interest (Zoom-in, zoom-out, roam, etc.)
At the same time, the Browser isolates the user from the
implementation details of the repository and the data objects.
As the name implies, the Browser does not update the
Catalogue. This allows Browsers to be distributed freely
without the overhead of client administration and
security concerns.
3.7 Online Mapping
Two CIS archive servers will be configured for the archive.
The first server, inside the CIS firewall, will be a secure master
copy of the data. The archived data will be loaded on this
server. The second server will contain a copy of the archive
database (exported from the server inside the firewall and
imported outside the firewall). It will provide access to both
internal and external clients.
Both servers will be implemented on the ISIS server platform.
The data will be managed using ArcSDE (Spatial Data Engine)
using Oracle 9i for the RDBMS storage and engine. All data
objects will be stored as BLOBS (Binary Large Objects) within
the RDBMS and will be physically located within database
files on the SAN as shown in Figure 2 above.
For the archive located outside the CIS firewall, ArcIMS
(Internet Map Service) will enable users to access ArcSDE
using a generic web browser. Users will also be able to access
the data directly using a variety of packages including
ArcCatalog, ArcGIS, ArcExplorer or even custom applications
based upon MapObjects (MO) or Java Server Pages (JSP).
4. REFERENCES
Canadian Ice Service (CIS), 2002, Navigating Icy Waterways
Using GIS, ARC North News, ERSI Canada. Vol>, No. 2.
pp.10-11
Koonar, A and Ou, Ziqiang 1999, Real Time and Near Real
Time Tactical Support Using Ice Reconnaissance Aircraft
Systems, Fourth International Airborne Remote Sensing
Conference and Exhibition, June, Ottawa.
Do
9
Koonar, A, Scarlett, B and Ou, Ziqiang, 2004, A real-time geo-
spatial Information System, An Integration of GIS technologies
for Ice Forecasting, /SPRS Workshop on Spatial Analysis and
Decision Making.
e»?
February 2004, Hong Kong.
Ou, Zigiang
2002, Aut
f'ana
uk, Bob,
in China, August 2002, pp. 36
Koonar, A and Scarlett, B 2002, Integrated Spatial Information
System, An integration of GIS technologies for ice hazard
warnings, ESRI User Conference — 2002.
International Ice Charting Working Group's Ad Hoc Format
Team for the Global Digital Sea Ice Data Bank, S/GRID-3: A
Vector Archive Format for Sea Ice Charts, 12 September 2003.