THE DESIGN AND IMPLEMENTATION OF LAND RESERVATION AND TRADING
SYSTEM BASED ON GIS TECHNOLOGY
yang Liu
School of resource and environmental science , Wuhan
University, Wuhan, Hubei,China, 430072
liuyang_052@163.com
The Design and Implementation of land reservation and trading System
Based on GIS Technology
LIU Yang, Lan Ze Yin
(School of resource and environmental science , Wuhan University, Wuhan, Hubei,China, 430072)
Nowadays Information resource
is just as important as material resource, it is urgent to use modern
information technology to digitize, visualize, network the business process of
land reservation and trading, including data acquiring, transmitting, storing,
disposing and serving, and GIS technology is very good at that. In order to
greatly promote the efficiency of land management and provide information
service for government decision and social application, we introduce the GIS
technology to realize a information system about land reservation and trading. The
paper will be organized into 4 parts, frame design, database design, function
design, summary, to expound the study.
(1)Frame design: The system structure is composed of three
layers, including application layer, middle layer and data layer.
(2)Database design: The data
layer is divided into two databases, spatial database and attribute database.
The spatial datasets are organized by the means of map layers which are
concentrated in the Oracle
database. On the other hand, the attribute datasets composed of record tables
in various business stage and other information tables are managed by the SQL
server database. The two databases are connected with each other by the sole
key field such as ID number.
(3)Function design and innovation:
The development of the system is based on MapObject component and Visual Basic
language. Its function includes layer controlling, business management,
information overview, process monitoring, information querying, map outputting
and power management, etc. Layer controlling not only provides the functions of
layer operation and browse, but also can control the detail of the map content
according to the changes of map scale automatically. Besides, it can also add
topographic maps or satellite images rapidly according to the spatial index of
the target area when the scale is big enough. Information querying can inquire
the objective of land reservation or trading by means of space topology and
property, as well as get some more info about the plot such as parcel property,
mortagage information, closing down information, etc to find out illegal
behavior and other knowledge. Business management not only provides the
function of data input, editing, inquiry, locating and output, it also offers
decision support to users about whether reserving or not or how to evaluate the
transaction plot. Information overview enables us rapidly skim over the
attribute info, attached drawing, accessory and multimedia information about
the objective by means of multimedia GIS technology. Process monitoring could
adopt spatial overlay analysis to acquire object's life track（its spatial
configuration and attribute information in various business stage）; The
making of maps is available outputting the areas in which users are interested
in the forms of pictures or simple standard maps.
(4) Summary and outlook:
The thought above has been carried out in this item and get very good effect.
The assistant decision-making module of land reservation and trading will be
the emphases of future research.