The 2000 Decennial Census School District Project:

quicksandwalleyeInternet και Εφαρμογές Web

31 Οκτ 2013 (πριν από 4 χρόνια και 2 μήνες)

106 εμφανίσεις

The 2000 Decennial Census School District
Project:

Using Census Data for the

School District Mapping System

****

Development and Implementation

Tai A. Phan

Tai_Phan@ed.gov

202
-
502
-
7431

DCSDLIST@inet.ed.gov

2000 Decennial Census

data

1999
-
2000 SD

boundaries

CCD and other NCES

data

ArcIMS Spatial

Server

ArcIMS Application

Server

ArcIMS Application

Server Connectors

ArcIMS Management

(Admin, Authors,..)

JAVA

TEXT

HTML

NCES

Server

ArcSDE

ArcSDE

ArcSDE

Architecture

Teams:



NCES Staff



Synectics for Management Decisions Inc.



Unisys Corp.



ESRI



Experts


Data:



PL94
-
171 redistricting data from 2000 decennial census



1999
-
2000 school district boundary files from TIGER/line files



2000 decennial census long form sample data (384,000 households)



1999
-
2000 Common Core of Data

Resources




Geographic Information System



Computers are cheaper and faster


GIS software is easier to use and geographical data are available


Analyze data visually so they can be easily understood


Presentation tool


Query data on the fly


Data display and analysis capabilities


Create maps and download data using your Web browser


Easy access to data with your standard Web browser


Integrate local and Internet data


Highly scalable server architecture



Features


Using the Internet



Resources


Expand number of data users


Cooperation between agencies in the government and between private sector and government


Timeliness


Flexibility


Access to a wealth of geographic and census data



Using ArcIMS and ArcSDE



Requires some minor customization


Integrated application capabilities


Leading technology


Can be upgraded and maintained one year from now, and 10 years into the future


Can be applied to local data integration


Centralized database


Support for Windows and Unix


Industry Standards


Uses TCP/IP protocol


Products


Text viewer:


Profiles of school district
-

comparison between 2 school districts


Download data file
-

by state, county, or by school district


Standard viewer:


Easy to use


Map and profile of school district/county/state


Thematic mapping of pre
-
selected tables/items


Download school district boundary files by state/county/school district


Standard GIS functions: pan, zoom, identify, select, query


Java viewers:


Thematic mapping


Map and profile of school district/county/state


Standard GIS functions


Extended GIS functions: map note, local data, WWW data, selected by




circle, line, multiple points


Note: Requires downloading of Java and ArcIms Viewers (10MB). Primarily for GIS
users
.

The School District Mapping System



The School District Mapping System
-

Data Availability





Timeliness and Currency



Cost Effectiveness/Funding: Efficiency of data file size



Accessibility



Security



Flexibility



Content



Cooperation

The School District Mapping System
-

GIS




ArcIMS and ArcSDE


Content


Process/implementation



RDBMS install and configuration



Database design




1
-
geodatabase




2
-
storage




3
-
feature of system



Admin tasks




server
-

power, memory, resource requirements



Performance Tuning




1
-
bandwidth requirements




2
-
internets and intranets



Backup and Recovery


Cooperation



Inter
-
government



Private Companies

ArcIMS*

Multi
-
tier system :

Browser to present maps and data

Applications / Logic

Data Source



Browser
-

Java, HTML, and Text viewers



Applications / Logic


Web Server
-

Windows NT, communicates with Application server by connectors




using Active X


ArcIMS Application Server
-

Handles incoming requests

Tracks mapping services from Spatial server



Can talk to multiple servers


ArcIMS Active X Connectors
-

Using Windows NT solution


Spatial Server
-

Holds Created Images, renders maps on server




Query
-

handling data queries




Support Geocode




Extract
-

send files (shape and data) to data users




Data Access Manager




Support ArcSDE layers, shapefiles, ArcSDE coverages




Map services
-

Image
-

requested maps are generated as JPG, or GIF





Feature
-

requested data is in bundled and streamed and cached





on the client allow additional client side capabilities





Data Storage

-

shape files, ArcSDE, images


ArcSDE*


A channel for storing, managing spatial data in relational database management system


RDBMS
-

leverage scalable structure


Integrated Data
-

cartographic and tabular can be stored together and retrieved




Geodatabase Technology


Multi
-
user access


Support spatial and non
-
spatial queries


Perform GIS operation on data


ArcSDE server is an application server for GIS clients
-

direct access to RDBMS


Minimizes network traffic with server data filtering


Back up and security


TCP/IP access


ArcSDE Data Model


ID, geometry, address
-



Spatial indexes for support spatial data queries


Virtually all formats can be imported



*
-

ESRI Technical Notes

The School District Mapping System
-

GIS


ArcIMS and ArcSDE


Summary, Recommendations, and Conclusions


Implementation phases based on the available budget and resources


No one vendor offers all of the services required


Ensure to give continuous input into designing specifications before the work begins

and throughout the project


Don’t micro
-
manage and avoid big change orders


Ask for input from others (consultants, experts) but don’t expect a free lunch


Make sure that data would be compatible with the GIS software


Make sure NCES existing hardware system is compatible and can be upgraded as needs evolve


System is scalable and easily updateable to meet NCES data users need


KEEP IT SIMPLE




Training and Workshops


MIS

NCES Summer Data Conference

??