ABSTRACT
Xuan Shi, Doug Nebert, Chuanrong Zhang, Haihong Yang, Huayi Wu, Peisheng Zhao, Zhenlong Li, Liping Di, Qunying Huang, Jing Li, Wenwen Li, Min Sun, and Genong Yu
CONTENTS
6.1 Need and Emergence of GII ..................................................................... 207 6.1.1 Changing Geoinformation Technology and Infrastructure ................................................................................. 207 6.1.2 Spatial Data Distribution and Mapping over the Internet ...................................................................................... 210 6.1.3 Interoperability Challenge to Information Infrastructure ................................................................................. 212
6.2 Interoperability .......................................................................................... 213 6.2.1 Heterogeneity Problems ............................................................... 213 6.2.2 Interoperability .............................................................................. 215 6.2.3 Benefits and Challenges ................................................................ 218
6.3 Web Services and Service-Oriented Computing (SOA) ....................... 219 6.3.1 SOAP-Based Web Services ............................................................ 220 6.3.2 Representational State Transfer Web Services ...........................222 6.3.3 Web Services Architecture or SOA .............................................223 6.3.4 SOA Design Principles and Concerns......................................... 224
6.4 SOA and OGC Web Services ....................................................................225 6.4.1 Service-Orientated Architecture .................................................225 6.4.2 OGC Web Services .........................................................................227 6.4.3 GeOnAS: SOA-Based Geospatial Online Analysis System ..................................................................................231
