Design And Application Of Data Release System For Government Outer Net

With the rapid development of information technology, The construction of government's portal has been the important part for electronic administrative. The government outer net real-time information release based on the inner net data center is the core function of government web site maintenance. Only by real-time updating the web site communication can make the web bring the social service function into full play. However, the isolation system between inner and outer net make it difficult to realize.Nowadays, The way of physical isolation of inner and outer net for the government information security requirements, make it difficult to share information between inner and outer net. The traditional solution uses storage device to transfer data from inner net to outer net by DBA. There are many problems by using this method such as the operation is complex, timely poor and so on.How to build the data conversion system between inner and outer net is the key problem. This pager gives the solution which sets up an extranet distribution system based on an intranet through a series of hardware and software design.The main part of the design of hardware to solve the data received from the one-way within the network, and network data from the device database is written out, one way to solve the data transfer, RS-232 serial port devices use in a transmit data line and a root ground for transmission equipment Arm_linux operating system, the stability of this operating system is better suited to real-time data transmission services, operating outside the network open-source database using the freetds library additions and deletions to the database. Hardware, software mainly ARMLinux as the core operating system, network server receiving data within an infinite loop to read data using unpack, the external network database operations directly connected modules FREETDS SQLSERVER additions and deletions to the database server operations. To achieve the data from the software within the network from outside networks, one-way release.This system is applied to the Land and Resources Bureau of Changchun City, e-government system as a module released outside the network, the Changchun City Land Resources Web site requires registration and outside the network card and workflow for real-time status data. Changchun City Land and Resources issued outside the main data network for the registration card and workflow status data, these two data are very concerned about the people, so the following Land and Resources Bureau of Changchun City, the data within the network as an example to explain the data published released in the middle of special equipment for service development.Changchun City Land and Resources issued outside the network data services, delphi development is the use of system services components. Sqlserver ado connection through the network database to obtain updated data into a sql statement, the company's pcommlite components through access to XOMA COM1, and send data, receive data released equipment sqlserver database connection outside the network, after the implementation of data update sql statement.We have applied our design to a real government outer net system, the result shows that the system is simple, efficient, low cost and so on.