www server: In short, a server that supports the WWW protocol is called a Web server
W W W (World Wide Web) is a large-scale, online information repository where users can Search through an interactive application called a browser. Many browsers have a point-and-click interface - the browser displays information on the user's computer screen and allows the user to manipulate it with the mouse. The information displayed includes text and graphics. Also, some information is highlighted to indicate that the item is optional. When the user places the cursor over a selectable item and clicks the mouse button, the browser displays new information associated with the selected item. A summary is as follows:
A browser is an interactive program that allows users to view information from the W W W. This information contains some options that allow users to view other information related to it. Internet: The Internet is an international computer network composed of wide area networks, local area networks and single machines according to certain communication protocols. The Internet refers to the result of connecting two computers or more than two computer terminals, clients, and servers through computer information technology. People can send emails and *** to each other with friends thousands of miles away. Complete the same work and enjoy the same entertainment. E-commerce: E-commerce usually refers to a wide range of commercial and trade activities around the world. In the open network environment of the Internet, based on browser/server application methods, buyers and sellers conduct various commercial activities without meeting to achieve consumer satisfaction. A new business operation model for online shopping, online transactions between merchants and online electronic payments, as well as various business activities, trading activities, financial activities and related comprehensive service activities. EDI: What is EDI? EDI is the abbreviation of English Electronic Data Interchange, which can be translated as "electronic data interchange" in Chinese. It is an electronic means of transmitting orders, invoices and other work documents between companies. B2G: B2G is a recent e-commerce model known as "business to government" (a variation of the term B2B or business-to-government). The concept is that businesses and government agencies can use a central website to exchange data and with each other. Do business more efficiently than they normally would online. For example, a website that provides B2G services could provide a single-site service that locates applications and tax formats for one or more levels of government (city, state or province, country, etc.); provides the ability to send completed forms and ability to make payments; update business information; request answers to specific questions and more. B2G may also include e-procurement services through which a merchant can learn about an agency's purchasing needs and the agency requests proposed responses. B2G may also support virtual workrooms, where merchants and agents can coordinate work on contracted projects by sharing a public website, coordinate online meetings, review plans and manage progress. B2G may also include the leasing of online applications and database designs, especially for use by government agencies. Electronic trading market: 1. Online transactions and online settlement can be realized through the trading system, and the performance of the contract is guaranteed through the margin system.
2. The trading model design is diversified, covering various trading methods of spot trading of steel products, and can achieve cross-mode arbitrage.
3. The system design is personalized. Traders can choose or agree on the transaction and settlement methods during the transaction process.
4. Seller’s listing and buyer’s listing realize online transactions of traditional spot trade.
5. Online bidding and online bidding adopt bidding transactions to help companies maximize sales profits and minimize procurement costs.
6. Online negotiation enables traders to interact online during the transaction process.
7. Two-way bidding selects representative varieties with large market circulation, and forms a guide price through the trading mechanism of open bidding. Convenient steel product sales and contract transfers help companies control costs, lock in profits in advance, and avoid risks caused by price fluctuations.
8. The special bidding session selects transaction types based on regional trading hotspots, provides reference prices for companies to purchase and sell steel in the near future, facilitates the sale and contract transfer of hot steel products, promotes resource circulation, and optimizes resource allocation.
9. Call auction is a standardized spot trading model provided for traders. Buyers and sellers bid together and implement rolling settlement, which facilitates large-scale transactions and forms a recent spot price with market guidance. .
10. Online bidding provides traders with a convenient and low-cost online bidding model, shortens the bidding cycle, increases the frequency of bidding, and attracts a wider range of bidders to participate.
11. Online special trading sessions can be set up for various trading modes by region and type to meet the individual needs of traders.
Symmetric encryption algorithm: Symmetric encryption algorithm Symmetric encryption algorithm is an earlier encryption algorithm with mature technology. In the symmetric encryption algorithm, the data sender processes the plaintext (original data) and encryption key together with a special encryption algorithm, turning them into complex encrypted ciphertext and sending them out.
After the recipient receives the ciphertext, if he wants to decipher the original text, he needs to use the key used for encryption and the inverse algorithm of the same algorithm to decrypt the ciphertext in order to restore it to readable plaintext. In the symmetric encryption algorithm, only one key is used. Both the sender and the receiver use this key to encrypt and decrypt the data. This requires the decryptor to know the encryption key in advance. Digital summary: Generally speaking, digital signatures are used to process short messages, but it is a bit difficult to process longer messages. Of course, a long message can be divided into several small pieces and then signed separately. However, this is very troublesome and can cause data integrity issues. A more reasonable approach is to digitally digest the message before digitally signing it.
Digital digest is to turn a message of any length into a short message of fixed length. It is similar to a function whose independent variable is the message, that is, the Hash function. CA: The American Chemical Abstracts (CA) was founded in 1907. It is edited and published by the Chemical Abstracts Service (CAS) of the American Chemical Society. It is now the most comprehensive and widely used literature on chemistry, chemical engineering and related disciplines in the world. A literature search tool. Other explanations of CA: CA: Chartered Accountant Chartered Accountant
CA China: /
CA: Civil Aviation Call Sign
China National Aviation Corporation (including its subsidiaries) The two-character code used
CA: Automobile Manufacturing Plant
The pinyin abbreviation of the First Automobile Manufacturing Plant
CA: Software Manufacturer
Is the third largest software manufacturer in the world
CA: Chairman of International United Computer Corporation:
IT hero——Wang Jialian
ca: Pao Tang< /p>
It is the abbreviation of Bubble Hall
CA: Cruiser
The abbreviation of Heavy Cruiser
Ca (Capillary Number):
Capillary number is a dimensionless number in fluid mechanics, which reflects the parameter that plays a dominant role in the influence of surface tension and viscous force on fluid motion. It is equal to the ratio of viscous force and surface tension, which is of great significance in the study of laminar flow motion state of microfluidic chips.
ca (wipe): wipe sweat, same as "sweat".
Or a variation of a curse word.
CA: Computer Algebra
CA: California, United States
C.A.: A barrel of industrial chemicals (for example: isopropyl alcohol ISOPROPANOL reagent with industrial grade purity 99.0% 20LT/CA liquid)
CA: Cellular Automata (CA)
CA: CASTOR Keai Company
CA: Cabin The abbreviation of Attendant is another name for the familiar stewardess
CA: Conan+Ai The CP of "Detective Conan": the abbreviation of Ke Ai
CA :correct action, pointing out the correction, improvement action or plan taken after the mistake to prevent similar situations from happening again.
Common plastic and resin abbreviation codes
CA: cellulose acetate
CAB: cellulose acetate-propionate
CF: cellulose acetate Phenol-Cresol
CA: Hippocampus
English abbreviation of Bubble Hall
Full name: Crazy Arcade, directly translated as Crazy Street
CA on the Internet refers to cā rub, which in Internet language means swearing, the same as "fuck"
CA: the abbreviation of Shanghai Ke Ai Culture Communication Co., Ltd. (CASTOR). It was established in August 2006 by the famous post-80s writer Guo Jingming.
"Fantasy Westward Journey"
The map Chang'an (CA) in the online game "Fantasy Westward Journey" is the abbreviation of E-business: a common standard definition: using Web technology to help enterprises streamline processes and enhance Productivity, improve efficiency. Make it easy for companies to communicate with partners, suppliers and customers, connect back-end data systems, and conduct business transactions in a secure manner. E-business is called electronic business, which is the digital transactions and processes that occur within the enterprise, including the internal information system of the enterprise. Characteristics generally do not include commercial transactions involving exchange of value across organizational boundaries. When a commercial transaction occurs, business is transformed into commerce.
E-commerce mainly involves cross-enterprise boundary transactions