KR20010000818A - method of implementing Internet-based client electronic commerce - Google Patents

Abstract

PURPOSE: A method for electronic commercial(EC) of clients base on the internet is provided to allow a buyer to directly contact with a seller, obtain the detailed information of a product and a buy condition supplied by the seller and thereby implement the EC, by enabling the operator of a web site for the EC to collect the information of product sale from the seller and offer it to the buyer. CONSTITUTION: A buyer computer ask the information of the product that will be bought to a server(S10). The server requests the search of the asked information about the product to a seller computer(S12). The seller computer searches the information of the asked product(S14). The server supplies the searched information together with the IP address of the seller computer to the buyer computer(S16). The buyer computer selects a certain product based on the supplied information(S18). A socket connect between the seller and buyer computers(S20). The buyer computer receives the detailed information of the product from the seller computer, and thereby implement the buy of the product(S22).

Description

{Method of implementing Internet-based client electronic commerce}

The present invention relates to an electronic commerce method based on the Internet.

With the activation of the Internet, various types of transactions using the Internet are being realized. Either way, e-commerce using the Internet requires a seller that sells goods, a buyer who wants to buy goods, and a trading environment in which these sellers and buyers can exchange information over the Internet.

A representative form of e-commerce methods known to date is that a seller opens an e-commerce site on the Internet, registers data on a product on a server system that he or she runs directly, and responds to the request of a person who accesses the server system. It is a way of forming a deal in a way that provides information about.

According to this method, it is necessary to establish a server system for operating an e-commerce site and various transaction solution programs, and furthermore, it is essential to secure specific data on sales products. The cost of building such an e-commerce system is a significant burden, so it is not easy for a small company or individual to build and operate such an e-commerce system. In addition, it is very difficult to operate an e-commerce site independently because it is difficult to secure membership for small or latecomers. Therefore, rather than operating an e-commerce site directly with a general customer as a company producing a specific product, a certain fee for consignment is paid in exchange for selling the product produced in cooperation with the company that operates the e-commerce site. The consignment of the payment method is common.

In the consignment sales method, from the standpoint of entrusting the sale of their products to the e-commerce operator, it is necessary to provide information about their products to the operators who operate the e-commerce to sell their products. When there are several e-commerce operators, and when there is a formal discrepancy between the product sales information required by each e-commerce operator, a number of troublesome things occur. In other words, in order to sell a product, information about one's own product must be continuously provided to an e-commerce operator. In the case of consigning a sale in a partnership with several e-commerce operators, each e-commerce operator usually has a unique product code. Therefore, it is not cumbersome and inconvenient for the consignor consigning product sales to provide product information corresponding to different product codes.

In addition, from the point of view of a product buyer, it is sometimes insufficient to decide whether to purchase a product based on product sales information provided by a site operator who operates an e-commerce site and sells the product of another person on behalf of the product buyer. I can feel it. If you wish to receive accurate and abundant information about the goods you wish to purchase, this level of information may not be sufficient for the e-commerce operator to act on the merchandise, while producing the product yourself or selling the product. The consigning party may, rather, provide the level of detail and accuracy that the buyer desires. Furthermore, in general, the number of sales consignees affiliated with one e-commerce operator is limited, so that the choice of products of the buyer is often limited.

This inconvenience is largely due to the transaction method of collecting and maintaining the information of the goods sold by the sales trustee operating the e-commerce site. Therefore, by newly establishing a cooperative relationship between the sales consignee and the sales consignor, the sales consignor can secure more sales consignees as members and provide a richer product menu to the buyers, and the sales consignor maintains the product information directly. There is a need for a new way of trading that does not have to be cumbersome by providing limited, only on-demand, demands at the buyer's request, rather than managing and mandating it to the trustee.

Accordingly, the present invention provides a predetermined e-commerce program to a company or an individual who operates an e-commerce site as a member of its own site to be installed on each computer, and sells the product using the function of the program. Those who wish to register and maintain information on their products directly on their computers, those who wish to purchase products request product information, and the e-commerce site operator requests the products of the buyer of the goods between the seller and the buyer of the goods. If there is a request for information, product sales information is collected from the seller and provided to the buyer, so that the purchaser can directly access the seller through the Internet to realize the transaction according to the detailed product information and the purchase method provided by the seller. The first to provide an e-commerce method The purpose.

Furthermore, the present invention provides a predetermined e-commerce program to a company or an individual who operates an e-commerce site as a member of its own site and installs it on their own computers. Registering the purchase information of the product to be purchased directly on its own computer, the server, in response to the request of the seller computer, inquires the purchase information registered in the computer of each buyer and provides the seller information to the seller computer, and the computers on both sides of the socket The second object is to support electronic commerce between the seller and the buyer by means of establishing a connection.

1 is a system configuration for explaining the electronic commerce method according to the present invention.

2A and 2B illustrate a series of procedures for providing and installing a solution program for each individual or company computer that enables the e-commerce service related to the present invention on the server when the individual or company accesses the server of the e-commerce site operator. It is a flow chart shown.

FIG. 4 shows that a solution program provided by a server is first provided with a seller's product information through an e-commerce operator's server using his computer under the condition that the solution program functions on the seller's and the buyer's computers. 3 is a flowchart illustrating a series of procedures for making a direct connection with a seller's computer for purchase, and FIG. 3 is a conceptual diagram illustrating an information exchange relationship between each computer device to help understand the procedure.

5 is an electronic commerce method according to a first embodiment of the present invention, in which a seller registers sales information on his computer, and a buyer receives sales information instead of the server of the operator of the e-commerce site to receive the information on the electronic commerce. This is a flow chart to explain how to reach.

6 is an electronic commerce method according to a second embodiment of the present invention, in which a buyer registers purchase information on his computer, and the seller receives the purchase information instead of the server of the operator of the e-commerce site to receive the information on the electronic commerce. This is a flow chart to explain how to reach.

<Explanation of symbols for main parts of drawing>

10: server

20: Internet

30-1, 30-2, 30-3: Buyer Computer

40-A, 40-B, 40-C: Merchant Computer

In order to achieve the object of the present invention as described above, according to the first method of the present invention, the step of providing a predetermined program using a server to a plurality of client computers that are connected for the first time through the Internet, the program is A function of registering, storing and managing sales information about a product to be sold by a computer of a seller that is installed in a database form, and searching and providing the predetermined product requested by the server from the sales information registered in the database to the server. A function of providing the purchaser's computer with detailed information about a specific product requested by the purchaser's computer through a socket connection; The program requests the server of the buyer to install the information of the buyer's desired product to the server, and in response to the search request, the server receives a list of the product searched and sent by the server, and displays it on the screen. If the buyer selects a particular product, including a function of establishing a socket connection with a seller's computer having an internet protocol address linked to the selected specific product;

If the buyer's computer requests the server for information of a product to be purchased, the server searching for sales information registered in the form of a database in each seller's computer; And

The server collects the registered sales information provided by the computer of each seller, and writes the collected sales information together with the Internet protocol (IP) address of the computer of the seller corresponding to each product to make a search request. Provided is an Internet-based electronic commerce method comprising the step of transmitting to a computer.

According to this method, each seller maintains the sales information directly on their computer by using the predetermined program, and the server inquires the information of each seller by searching the computer in response to the buyer's search request. Intermediate to establish a socket connection between the seller's computer and the buyer's computer capable of selling the product, and the buyer establishes a socket connection with the computer of the seller to provide more detailed information about the product. It allows you to confirm the purchase while receiving.

According to the second method of the present invention, a step of providing a predetermined program by using a server to a plurality of client computers that are initially connected through the Internet, wherein the program at least allows a computer of a buyer who has installed the product to be purchased. Register and store purchase information in the form of a database, and provide the server with purchase information registered in the database in response to a request of the server; The program asks the server of the seller's computer on which the purchaser is installed to search the server for the purchase information registered in each computer of the buyer, and displays the purchase information searched and transmitted by the server in response to the search request. Selecting a purchaser's purchase information from the purchase information, and establishing a socket connection with a computer of the selected specific purchaser;

In response to a request for retrieving the purchase information made by the seller's computer, the server accessing each buyer's computer and retrieving registered purchase information; And

The server collects the registered purchase information provided by the buyer's computer, writes the collected purchase information together with the internet protocol (IP) address of each buyer computer, and sends the search request to the seller's computer. An internet based electronic commerce method is provided.

According to this method, each purchaser directly registers purchase information of a product to be purchased by using the predetermined program in his computer, and the server registers the purchase registered in the computer of each buyer in response to a request of a seller computer. The information is inquired and provided to the seller computer, and both computers support the electronic commerce between the seller and the buyer by mediating the socket connection.

Here, the predetermined program is preferably a RAM resident program resident in the RAM of the computer on which it is installed.

Other features and advantages of the present invention will become more apparent with reference to the following detailed description and accompanying drawings that illustrate the features of various embodiments of the invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a system configuration for explaining the electronic commerce method according to the present invention. The present invention is a computer (30-1, 30-2, 30-3) of buyers that the e-commerce site operator (operating company) has a server (10) and makes a service solution program to be described below to access through the Internet (20) ) And the vendor's computer (40-A, 40-B, 40-C) to create and run the installation environment. The server 10 will be described below, but the function of providing the service solution program to the member computer, the function of collecting the product information registered in the seller computer in response to the buyer's request for providing the product information to the buyer's computer, In addition to the product information, the function of providing the buyer's computer with the IP address of the seller's computer so that the buyer's computer can make a socket connection with the seller's computer, the registration and authentication of company members, and the buyer's or seller's computer It performs the function to monitor and check the connection status of (client) from time to time.

In FIG. 1, the buyer and seller may be individuals or companies, and their status may be changed. That is, from the point of view of an individual or a company, he or she may be able to access the server 10 that operates the e-commerce site as a buyer, but in some cases, if he wants to sell the goods he owns, he or she may be connected as a seller. It may be.

Meanwhile, in order to execute the electronic commerce method according to the present invention, the electronic commerce operator should provide a predetermined electronic commerce service solution program to the computer of the buyer and seller of the product. This solution program enables the computer on which it is installed, that is, the buyer's computer (30-1, 30-2, 30-3) or the seller's computer (40-A, 40-B, 40-C) to: Make it work. This solution program can be built separately for buyers and sellers by separately installing the functions required by each buyer and seller, but it is necessary for both parties to take into account that some trading entity can function as buyer or seller in some cases. It is more desirable to make it a shared program that includes all the functions. The function of registering and maintaining the product information desired by the buyer, such as a product name, a real picture of the product, a price, a weight, and maintaining it as a product database. A function of requesting the server 10 for the seller information and the product list about the desired product, and the seller computer extracts the product information requested by the server 10 from its product database in response to the buyer's request for information. 10) the function to provide the buyer's computer to establish a socket connection with the particular seller's computer based on the product list and seller information received from the server 10, and the buyer makes a purchase request to the seller The seller has the ability to handle product sales in response to such a purchase request. This program is a typical feature to have.

The solution program is a RAM resident program that resides in the RAM of an installed computer. The RAM resident function is necessary because the electronic commerce method according to the present invention requires a computer of a specific member to frequently exchange various information related to the electronic commerce with the server 10 or another member, that is, the computer of a seller or a buyer.

In order to achieve the electronic commerce according to the present invention, first, the electronic commerce operator should have such a solution program on his server 10 and transmit the above program to a computer of a member who registers as a member. 2A and 2B show a computer program of each individual or company (this is the computer of the buyer in FIG. 1) that enables a server or a solution program to enable the e-commerce service related to the present invention when the individual or company accesses the server 10. This is a flow chart illustrating the sequence of steps provided and installed on (30-1, 30-2, 30-3) or vendor's computer (shown at 40-A, 40-B, 40-C).

Anyone who can become a member can be an individual or a company.

First, in the case of an individual member, the solution program is provided according to FIG. 2A. According to FIG. 2A, an individual member accesses the server 10 via the Internet 20 using his computer, at which time the server 10 determines whether the individual member accesses the server 10 for the first time. Determine. In case of the first visitor, the solution program is downloaded to the visitor's computer. The solution program resides in the RAM on the computer which has downloaded the solution program, and performs the various functions mentioned above. If the user of the computer where the solution program is installed, for example, wants to sell his product, he or she can not only register the product on his computer, but also designate and register the product for sale, for example, auction method or fixed price method. Can be. In the case of connecting to the server 10 of the member who has already completed the installation of such a solution program or the registration of the sales product, it is not the first connection, so the user can immediately log in to the server 10, where the server 10 is connected to the computer of the visitor. It collects the Internet Protocol (IP) address and the visitor's member information and uses them for various requests for information and delivery that may be required in subsequent e-commerce transactions. The computer logged into the server 10 waits in the connected mode unless the user instructs the user to do so. In this connected mode, the solution program resides in RAM.

If the company is a member to provide the solution program according to Figure 2b. The procedure to download and install the solution program on a computer of a specific company and to register information such as sales products is not different from that of the individual. However, unlike individual individuals, a company will often function as a seller of goods, and therefore, a list of companies on the homepage of an e-commerce operator may be used to provide a place to advertise itself to various other customers. In displaying a list of members on the homepage of an e-commerce site, it is possible to attract more companies as members by providing a service that gives priority to placing a company above an individual. In order to provide such a service, first, a company authentication procedure is performed to confirm whether a computer accessing the server 10 is a company (company) having a valid qualification under contract based on a contract between an e-commerce operator and a specific member company. This procedure is performed by the server 10 comparing the IP addresses of the current users with the list of IP addresses of the companies they have. The computer of the authenticated company may further enjoy the additional services provided to the aforementioned company members, and if not authenticated, the server 10 treats the access computer as a personal member and provides only services provided to the individual member only. .

FIG. 4 shows that a buyer uses his computer 30-1 to display the seller's product information under the condition that the solution program provided by the server 10 is functioning on the computer of the seller and the buyer. 3 is a flow chart illustrating a series of procedures that are provided primarily through the server 10 and then directly establish a direct connection with the seller's computer 40-A or 40-B for purchase. FIG. 3 illustrates an understanding of these procedures. This is a conceptual diagram showing the information exchange relationship between each computer device to assist. Reference numerals in FIG. 3 correspond to those in FIG. 4.

A series of processes in which a buyer accesses an e-commerce site related to the present invention and purchases a product is performed by first requesting the server 10 for information on a product to be purchased through his computer 30-1. depart. That is, using a product search function of the solution program, for example, enter a brand name 'TV' and request the product information on the server (S10 step).

When a request for product information to be purchased from the purchaser computer 30-1 is received, the server 10 requests the computer information 40-A and 40-B registered as a seller to search for and provide the product information requested by the buyer to the customer. (Step S12).

Each seller computer 40-A, 40-B, which has received a request for retrieval of product information from the server 10, searches whether the requested product is registered as a sellable product in its own product database and retrieves the result. Transfer to server 10 (step S14). Each vendor computer 40-A, 40-B always maintains the latest information on the products which can be sold in advance.

The server 10 having received the product information returned from each of the seller computers 40-A and 40-B organizes the product information returned by the seller computer along with the IP address of each seller computer and requests the product information for the first time. It passes to (30-1) (step S16). To this end, the server 10 holds the IP information and member information of the member computer having a connection relationship with itself and continuously monitors the communication status of these computers. The information provided from the server 10 may be made in various forms. For example, the product list and the seller list are provided in a text database, and each of the product list and the seller list is matched with the IP address of the seller computer. Provided by linking

The purchaser reviews the list of products provided from the server 10 on the screen and selects a specific product according to his or her interest level (step S18). For example, when a request for product information on "television" is requested, the list of the product "television" transmitted from the server 10 may include televisions of various companies, and even one company may include various models of "television". May be included. Based on this product information, the buyer can select the "specific television" of interest.

When the purchaser selects a product, the purchaser computer 30-1 reads the IP address of the seller computer 40-A or 40-B linked to the selected product, and makes a socket connection with the computer through the Internet 20. (S20).

After the purchaser's computer 30-1 makes a socket connection with a predetermined seller's computer 40-A or 40-B, the seller's computer 30-1 receives more detailed information about the product from the seller's computer. Therefore, the procedure of purchasing goods (step S22).

FIG. 5 is a flowchart illustrating an example of a process of reaching an e-commerce transaction by exchanging necessary information between a buyer computer and a seller computer in a socket connection.

First, the purchaser computer 30-1 is provided with detailed information about the selected product from the seller computer 40-A or 40-B in a socket connection relationship (step S30). Detailed information of the product may be provided in various ways and contents for each seller. As a result of reviewing the detailed information, if the purchaser is willing to purchase a certain product, the buyer selects the purchase method prepared by the seller (step S32), and proceeds to purchase the product according to the selected purchase method.

In Figure 5 as an example of a common purchase method auction method and a fixed price method is shown by way of example, the purchase method that the seller can provide a reverse auction method or other methods in addition to this may be further provided. will be.

For example, if a seller chooses an auction method, he searches a list of bid prices registered on the seller's computer, and if he is willing to make a purchase even though he is willing to pay a price higher than the current highest bid price, he will register his bid price. Just do it. This process is performed for multiple buyers or for a single buyer until the auction deadline, and when the auction deadline arrives, the seller's computer sorts the registered bid price and selects the buyer with the highest price. The deal is concluded using the suggested purchase price as the winning price (steps S34 to S48).

Alternatively, if the buyer chooses a fixed price method, the buyer reviews the selling price of the product set by the seller to determine the purchase intention. If there is a purchase intention, the buyer passes the intention to the seller computer to enter into a transaction. (S50 to S54 steps).

On the other hand, in contrast to the way that the buyer first finds the seller and leads to commerce (this is called 'first method'), when the buyer registers his / her desired product on his computer, the seller finds out and connects with the buyer. It is also possible to use a method to reach commerce (this is called a 'second method'). For example, as a result of searching for a sale product registered by a seller in the above manner from a buyer's point of view, there may be a case in which there is no product to be purchased. Alternatively, a seller may not want to register a product he wants to sell on his computer, but may first look up the buyer's desired product and view the inquiry result to make a transaction contact with the buyer. In this case, it would be appropriate for the seller to find the buyer and establish the commerce. 6 is a flowchart illustrating a method in which a seller first finds a buyer and leads to an e-commerce.

In this transaction method, first, if there is a product that a buyer wants to purchase, information about the product to be purchased, for example, a brand name, a specification, or a purchase condition, is registered in his computer 30-1 (step S60). This registration can be made by several buyers.

Based on this status, the seller actively uses his computer 40-A to actively search for the product that the buyer has registered as a desired product to purchase. Instead of making a request to the server 10 (step S62).

If there is a request for inquiry of the desired product to be registered from the seller computer 40-A, the server 10 accesses each buyer's computer 30-1, 30-2, 30-3, and registers with each computer. The information on the desired product to be purchased is collected. Then, the collected desired product information is returned to the seller computer 40-A that has made an inquiry request together with the Internet Protocol (IP) addresses of each of the buyer computers 30-1, 30-2, and 30-3. As in the previous case, the server 10 organizes the list of desired products to be purchased together with each buyer list in the form of a text database, and links each of the product lists or seller lists with the IP address of the buyer computer to the seller computer 40-A. Provide (S64 step).

The seller reviews the information of the desired product purchased from the server 10 and selects a list of products that the buyer can sell from among the products desired by the buyer (S66).

When the seller selects a particular product on his computer screen, the seller computer 40-A reads the IP address of the buyer's computer linked to the product and establishes a direct socket connection with that buyer's computer via the Internet 20 ( Step S68).

Through this process, when the seller computer 40-A and the buyer computer establish a socket connection, the seller then proceeds through the exchange of information through the exchange of information between them. It may be realized (step S70).

In order to enable electronic commerce in this second manner, the server 10 provides a predetermined program to a plurality of client computers that are initially connected through the Internet 20, as in the first manner. The program registers at least one purchaser's computer, such as a desired product, and stores and manages the purchase information in a database form. The program stores the purchase information registered in the database in response to a request of the server. Make it have the functionality it provides. In addition, the program allows the computer of the seller where it is installed to request the server to search the purchase information registered in each buyer's computer, and display the purchase information that the server searches for and transmits in response to the search request. When the seller selects purchase information of a specific buyer from the purchase information, the seller has a function of establishing a socket connection with the computer of the selected specific buyer. Of course, it is preferable to make this predetermined program also the RAM resident program which resides in the RAM of the computer in which it is installed.

For the e-commerce site operator, it would be efficient to make the program and provide it to the computer of each member (client) so that both the first and second methods of electronic commerce are possible.

In the above description, only three computers of the buyer or seller are shown in the drawings, but this is for convenience of explanation and in practice, a larger number of computers access the server 10 at the same time and follow the above-described e-commerce procedure. Will be more general.

According to the electronic commerce method according to the present invention, the e-commerce operator does not hold the information on the sale product, but rather takes the way that each seller registered as a member directly registered and maintained on their computer. In another form, if a buyer registers a desired product on his computer without searching the seller's sales information, the seller can find the buyer first and realize the transaction. Either way, the server 10 of the e-commerce site operator intervenes between the seller and the buyer's computer to find the necessary information and to enable direct access to each other.

Therefore, even if the seller deals with a number of e-commerce operators, the data of the sale product can be registered and managed according to their own code system, thereby greatly reducing the inconvenience of data management. In addition, the buyer can be provided with the most recent product information at the time he requested the product information of the various sellers through the server 10 of the e-commerce operator, and furthermore the range of products that can be selected is more diverse and the information about the product It is attractive in that it can be provided in more detail and accurately. In addition, it is convenient to register a purchase condition in advance and induce a connection with a seller who can satisfy the condition to realize a customized purchase. In addition, the e-commerce operator can play a role as a mediator of information exchange between the buyer and the seller, so that the buyer can directly contact the seller, thereby reducing the cost and effort of operating the e-commerce site. In addition, they have the ability to attract more sellers and buyers to their sites. As a result, the electronic commerce method according to the present invention is expected to bring a more beneficial effect to each of the relevant subjects of the electronic commerce.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below You can. Accordingly, all changes that come within the meaning or range of equivalency of the claims are to be embraced within their scope.

Claims (7)

A step of providing a predetermined program using a server for a plurality of client computers that are connected for the first time through the Internet, the program registers the sales information about the product to be sold by the computer of the seller where it is installed in a database form , A function of managing, searching for a predetermined product requested by the server among sales information registered in the database, and providing the server with the server; and detailed information about a specific product requested by the buyer's computer through a socket connection. Has a function for providing to said purchaser's computer; The program requests the server of the buyer to install the information of the buyer's desired product to the server, and in response to the search request, the server receives a list of the product searched and sent by the server, and displays it on the screen. If the buyer selects a particular product, including a function of establishing a socket connection with a seller's computer having an internet protocol address linked to the selected specific product; If the buyer's computer requests the server for information of a product to be purchased, the server searching for sales information registered in the form of a database in each seller's computer; And The server collects the registered sales information provided by the computer of each seller, and writes the collected sales information together with the Internet protocol (IP) address of the computer of the seller corresponding to each product to make a search request. Sending to a computer, Using the predetermined program, each seller maintains the sales information directly on their computer, and the server may sell the requested product by searching the information on the computer of each seller in response to a buyer's search request. The seller's computer and the buyer's computer are able to establish a socket connection, and the buyer establishes a socket connection with the seller's computer and is provided with more detailed information about the product and confirms the purchase. Internet-based client e-commerce method characterized in that it allows. The Internet-based client electronic commerce method according to claim 1, wherein the predetermined program is a RAM resident program resident in RAM of a computer on which the predetermined program is installed. The method of claim 1, wherein the server further comprises the step of periodically checking a connection state of a client computer connected to the server. The method of claim 1, wherein the server further comprises a step of performing a company identification procedure to confirm whether the client computer connecting to the server is a client computer of an individual or a company. The computer of claim 1, wherein the seller's computer provides a selection opportunity for a purchase method such as a fixed price purchase or an auction purchase with a socket connection with the purchaser, and purchases according to the purchase method selected by the seller. And further comprising a step of making a procedure. Providing a predetermined program using a server for a plurality of client computers that are connected for the first time through the Internet, wherein the program registers purchase information such as desired products and stores them in a database form at least by a computer of a buyer. A function of managing and providing the purchase information registered in the database to the server in response to a request of the server; The program asks the server of the seller's computer on which the purchaser is installed to search the server for the purchase information registered in each computer of the buyer, and displays the purchase information searched and transmitted by the server in response to the search request. Selecting a purchaser's purchase information from the purchase information, and establishing a socket connection with a computer of the selected specific purchaser; In response to a request for retrieving the purchase information made by the seller's computer, the server accessing each buyer's computer and retrieving registered purchase information; And The server collects the registered purchase information provided by the buyer's computer, writes the collected purchase information together with the internet protocol (IP) address of each buyer computer, and sends the search request to the seller's computer. Equipped, Each purchaser directly registers purchase information of a product to be purchased by using the predetermined program in its own computer, and the server inquires the purchase information registered in the computer of each buyer in response to a request of a seller computer. An Internet-based client electronic commerce method comprising providing an electronic commerce between a seller and a buyer by providing the seller computer and allowing both computers to establish a socket connection. 7. The method of claim 6, wherein the predetermined program is a RAM resident program residing in RAM of a computer on which the predetermined program is installed.