Summary of some common technical descriptions in software bidding documents

I. Web Service technology

Web Service is an interface proposed to enable communication and sharing between isolated sites. Web services use unified and open standards on the Internet, such as HTTP, XML, SOAP (Simple Object Access Protocol), and WSDL, therefore, Web services can be used in any environment that supports these standards (Windows and Linux. Simple Object Access Protocol (SOAP) is an XML-based communication protocol used for network information exchange in distributed and distributed environments. Under this protocol, software components or applications can communicate through the standard HTTP protocol. Its design goal is simplicity and scalability, which facilitates the interoperability between a large number of heterogeneous programs and platforms, so that existing applications can be accessed by a wide range of users.

The principle of Web Service implementation is to achieve its most basic goal based on the following three points-to achieve interoperability within the Internet:

(1) web service is implemented based on XML. XML is a distinguished language that is independent of any platform or language and can describe structural data independently. During the entire data transmission process of the web service, any message must be serialized in XML for transmission and processing.

(2) web service uses WSDL to describe all content of web service. The service consumer constructs a Service proxy through the Service's WSDL file. The WSDL file tells the service consumer how to interact with the service just like the service manual;

(3) data transmitted after XML serialization must be bound to the network protocol to achieve resource interaction, integration, and interoperability on the Internet.

 

Ii. GPRS technology

GPRS (General Packet Radio Service, Universal Wireless grouping Service), as the second generation of mobile communication technology, the transition from GSM to the third generation mobile communication (3G) technology, it was proposed by Bt cellnet as early as 1993. It is one of the things implemented by the GSM phase2 + (1997) standard and is a mobile grouping Data Service Based on GSM, provides users with IP addresses or X.25 connections for mobile groups.

GPRS overlays a new network based on the existing GSM network, and adds some hardware devices and software upgrades to the network to form a new logical network entity, provides end-to-end and wide-area wireless IP connections. In layman's terms, GPRS is a high-speed data processing technology, which is based on the group exchange technology. Users can use various high-speed data services in the mobile status through GPRS, including sending and receiving e-mail and Internet browsing. ---- GPRS is a new GSM data service that provides a connection between a mobile user and a data network to provide mobile users with high-speed wireless IP addresses and X.25 services. GPRS uses the group exchange technology. Each user can occupy multiple wireless channels at the same time. The same wireless channel can be shared by multiple users, and resources can be effectively used. The high-speed transmission of GPRS technology with kbps can almost enable wireless Internet access to achieve the public network ISDN effect, achieving "portable" Internet ". GPRS is used to send and receive data in groups. Users are always online and billed based on traffic and time, quickly reducing service costs.

 

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