JP2002163497A - Purchase system, purchase method and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To speedily, inexpensively and simply purchase commercial products for general purchase especially commercial products of a short life cycle (a personal computer, an electric product, office supplies, e.g.). SOLUTION: This purchase system is obtained by connecting user terminals 200 to be operated by a user purchasing a product, a supplier terminal 300 to be operated by a supplier providing the product and a purchase system server 100 through a network 400. The server 100 stores product information on the product in a product information file, and a terminal 300 transmits the providing discount rate of the product to the server 100. The terminal 200 accesses the product information file of the server 100 to select a desired product and the server 100 transmits the providing discount rate of the supplier concerning the selected to the terminal 200.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a purchasing system, a purchasing method, and a recording medium.

[0002]

2. Description of the Related Art Conventionally, in a general purchasing business, a purchasing system has been constructed in order to purchase, for example, personal computers, electric appliances, office supplies, and the like.

[0003]

However, the conventional electronic commerce system has a problem in that it is necessary to make a joint estimate with a plurality of suppliers who provide the product to be purchased by telephone, facsimile, etc., and to purchase the product at any time.

An object of the present invention is to provide a purchasing system, a purchasing method, and a recording medium capable of automatically selecting a supplier presenting the lowest price for a product to be ordered in view of the above problems.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a user terminal operated by a user who purchases a product and a supplier who provides the product operate. A purchasing system in which a supplier terminal and a purchasing system server are connected via a network, wherein the purchasing system server stores product information relating to the product in a product information file; and Means for transmitting a provided discount rate to the purchasing system server,
Means for accessing the product information file of the purchasing system server to select a desired product at the user terminal; and providing, at the purchasing system server, the provision discount rate of the supplier with respect to the selected product to the user terminal. And means for transmitting to the user.

According to a second aspect of the present invention, in the purchasing system according to the first aspect, the user terminal determines a plurality of supplier terminals according to the provided discount rate, and sends the determined plurality of supplier terminals to the determined plurality of supplier terminals. It is characterized by further comprising means for requesting that the offer discount rate be provided again.

According to a third aspect of the present invention, in the purchasing system according to the first aspect, the purchasing system server stores a purchase result in a purchase result file;
The purchase system server further comprises means for making at least a part of data stored in the purchase record file accessible from the supplier terminal.

According to a fourth aspect of the present invention, in the purchasing system according to the first aspect, an electronic catalog server for providing the product information is further provided, and in the purchasing system server, the product information is transmitted from the electronic catalog server. It is characterized by further comprising means for downloading.

According to a fifth aspect of the present invention, in the purchase system according to the first aspect, the provided discount rate is larger than a minimum discount rate.

[0010] The invention according to claim 6 is a purchasing system server connected via a network to a user terminal operated by a user who purchases a product and a supplier terminal operated by a supplier who provides the product. Means for storing the product information relating to the product in a product information file, means for storing the provided discount rate of the product transmitted from the supplier terminal in a discount rate file, and wherein the user terminal accesses the product information file. Means for accessing the discount rate file to search for the offered discount rate of the supplier for the selected product, and transmitting the search result to the user terminal. It is characterized by having.

According to a seventh aspect of the present invention, in the purchasing system server according to the sixth aspect, when the user terminal determines a plurality of the supplier terminals according to the provided discount rate, the user terminal determines the plurality of the supplier terminals. It is characterized by further comprising means for requesting that the offer discount rate be provided again.

According to an eighth aspect of the present invention, in the purchasing system server according to the sixth aspect, means for storing a purchase result in a purchase result file, and at least a part of the data stored in the purchase result file is stored. Means for enabling access from the supplier terminal.

According to a ninth aspect of the present invention, there is provided the purchasing system server according to the sixth aspect, further comprising means for downloading the product information from the electronic catalog server that provides the product information. .

According to a tenth aspect of the present invention, in the purchasing system server according to the sixth aspect, the provided discount rate is:
It is characterized by being larger than the minimum discount rate.

According to an eleventh aspect of the present invention, a user terminal operated by a user who purchases a product, a supplier terminal operated by a supplier who provides the product, and a purchasing system server are connected via a network. A purchasing method in a purchasing system, wherein the purchasing system server stores product information on the product in a product information file, and the supplier terminal sends a provision discount rate of the product to the purchasing system server. And at the user terminal,
Accessing the product information file of the purchasing system server to select a desired product; and transmitting the offer discount rate of the supplier with respect to the selected product to the user terminal in the purchasing system server. And a step.

According to a twelfth aspect of the present invention, in the purchasing method according to the eleventh aspect, the user terminal determines a plurality of the supplier terminals according to the provided discount rate, and provides the determined plurality of the supplier terminals The method further comprises the step of requesting that the offer discount rate be provided again.

According to a thirteenth aspect of the present invention, in the purchasing method according to the eleventh aspect, the purchasing system server stores a purchase result in a purchase result file; And making at least a part of the data stored in the storage terminal accessible from the supplier terminal.

According to a fourteenth aspect of the present invention, in the purchasing method according to the eleventh aspect, the electronic catalog server further includes an electronic catalog server for providing the product information. The method further comprises the step of downloading.

According to a fifteenth aspect of the present invention, in the purchasing method according to the eleventh aspect, the provided discount rate is larger than a minimum discount rate.

[0020] According to a sixteenth aspect of the present invention, a purchasing system server connected via a network to a user terminal operated by a user who purchases a product and a supplier terminal operated by a supplier who provides the product. A method of storing product information relating to the product in a product information file; storing a provision discount rate of the product transmitted from the supplier terminal in a discount rate file; Accessing the file and selecting a desired product, searching for the offered discount rate of the supplier for the selected product by accessing the discount rate file, and transmitting the search result to the user terminal; And characterized in that:

According to a seventeenth aspect of the present invention, in the purchasing method of the sixteenth aspect, when the user terminal determines the plurality of supplier terminals according to the provided discount rate,
The method further comprises a step of requesting the determined plurality of supplier terminals to provide the provided discount rate again.

The invention according to claim 18 is the purchasing method according to claim 16, wherein the step of storing a purchase result in a purchase result file includes the step of storing at least a part of the data stored in the purchase result file. Enabling access from a supplier terminal.

The invention according to claim 19 is the purchasing method according to claim 16, further comprising a step of downloading the product information from the electronic catalog server that provides the product information.

According to a twentieth aspect of the present invention, in the purchasing method according to the sixteenth aspect, the provided discount rate is larger than a minimum discount rate.

According to a twenty-first aspect of the present invention, a purchasing system server connected via a network to a user terminal operated by a user who purchases a product and a supplier terminal operated by a supplier who provides the product. Storing product information on the product in a product information file on a computer readable recording medium storing a program for causing a computer to execute the method, and discounting a discount rate of the product transmitted from the supplier terminal Storing in a rate file;
When the user terminal accesses the product information file and selects a desired product, the discount rate of the supplier for the selected product is searched for by accessing the discount rate file, and the search result is obtained by the user. The method is characterized in that the program is a computer-readable recording medium in which a program for causing a computer to execute the step of transmitting to a terminal is recorded.

According to a twenty-second aspect of the present invention, in the recording medium according to the twenty-first aspect, when the user terminal determines a plurality of the supplier terminals according to the provided discount rate,
The method further comprises a step of requesting the determined plurality of supplier terminals to provide the provided discount rate again.

According to a twenty-third aspect of the present invention, in the recording medium according to the twenty-first aspect, the step of storing a purchase result in a purchase result file, and at least a part of the data stored in the purchase result file, Enabling access from a supplier terminal.

The invention according to claim 24 is the recording medium according to claim 21, further comprising a step of downloading the product information from the electronic catalog server that provides the product information.

According to a twenty-fifth aspect of the present invention, in the recording medium according to the twenty-first aspect, the provided discount rate is larger than a minimum discount rate.

According to the above configuration, it is possible to quickly, cheaply, and easily purchase general purchased commercial products, particularly, commercial products having a short life cycle (for example, personal computers, electric appliances, office supplies, etc.).

[0031]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram showing an example of a system configuration of a purchasing system to which the present invention is applied, and conceptually shows only a part related to the present invention in the configuration of the present system.

The purchasing system includes at least a purchasing system server 100, a user terminal 200 operated by a general user, a supplier terminal 300 operated by a supplier, and a network 4 interconnecting these.
00.

The purchasing system server 100 has a function of providing a function for a user to purchase a product from a supplier, a function of accumulating purchase results, and providing the result to the supplier. The purchasing system server 100 is a web server or A
It may be configured as an SP server or the like. Here, FIG.
FIG. 2 is a diagram illustrating an example of a configuration of a purchasing system server 100 to which the present invention is applied, and conceptually illustrates only a part related to the present invention in the configuration. The purchasing system server 100 of the present invention includes at least a programmed main control unit (control means, hereinafter C
And a bus 104 to the CPU 102.
An input device 106 such as a mouse or other pointing device, a keyboard, an image scanner, a digitizer, or the like, which is connected via a computer, a display device 108 used to monitor input data, and a printer for outputting various processing results and other data. Modem, terminal adapter or DSU connected to device 110, communication line (including wired / wireless, LAN / Internet, analog / digital), etc.
Communication port 112 connected to a communication device such as
And a storage device 120. Further, the input device 106, the display device 108, and the output device 110 may be connected to the CPU 102 via input / output interfaces. The CPU 102 executes the OS (Opera
It has a control program such as a Ting System, a program defining various processing procedures and the like, and an internal memory for storing required data, and performs information processing for executing various processes using these programs. . The storage device 120 is a storage device such as a memory device such as a RAM or a ROM, a fixed disk device such as a hard disk, a flexible disk, or an optical disk. Various storage devices such as tables, files, databases, and HTML data for a web page are used. And at least a discount rate file 122 storing a discount rate for each product presented by each supplier, a product information file 124 storing master information about the product, and a user file 126 storing master information about the user. ,
A supplier file 128 that stores master information about the supplier and a purchase result file 130 that stores master information about the purchase result of the user are stored.
Here, the input device 106, the display device 108, and the output device 1
Reference numeral 10 is not essential for the configuration of the purchasing system server 100 because it is used by a maintenance person who maintains and monitors the purchasing system server 100 to maintain and monitor the device. The communication port 112 has a function of communicating data with another terminal via a communication line. Further, the purchasing system server 100 connects a peripheral device such as a printer, a display, and an image scanner to an information processing device such as an information processing terminal such as a known personal computer or a workstation. May be implemented by implementing software (including programs, data, and the like) for implementing the above.

User terminal 200 and supplier terminal 3
No. 00 connects peripheral devices such as a printer, a display, and an image scanner to an information processing device such as a known personal computer, a workstation, a PHS terminal, a mobile phone terminal, a mobile communication terminal, or an information processing terminal such as a PDA. Software (including programs, data, etc.) that allows information processing devices to browse web information
May be implemented by implementing. In particular, the mobile terminal may be a terminal having an e-mail function and an Internet access function (for example, N.K.
I-mode (service name) terminal provided by TTI docomo (company name), etc.

The network 400 has a function of connecting the purchasing system server 100, the user terminal 200, the supplier terminal 300, and the electronic catalog server 500 to each other.
AN (including both wired / wireless), VAN, public telephone network (including both analog and digital), CATV
Network, IMT2000 system, mobile circuit switching network / mobile packet switching network such as PDC / PDC-P system, radio paging network, local radio network, PHS network, satellite communication network, etc. Good.

The electronic catalog server 500 has a function of providing product information on the Internet. here,
"Product information" means the manufacturer name, model number, specifications,
Refers to price, overview map, etc.

Next, an example of the operation of the purchasing system thus configured in the present embodiment will be described in detail with reference to FIGS.

FIG. 3 is a flowchart showing an example of the operation of the purchasing system according to the present embodiment. 4 to 12
FIG. 7 is a diagram showing an operation image of each step in the purchasing system of the present invention.

First, a plurality of suppliers are selected for each product maker by competitive bidding based on the minimum discount rate throughout the year of the product specified for each category (step S302).

FIG. 4 is a diagram showing an example of an operation image when a supplier is selected in the purchasing system of the present invention.
The purchasing system server 100 receives the minimum discount rate for each category of the designated product from the supplier terminal 300. Here, the “minimum discount rate” is a number indicating the lowest line of the discount rate throughout the year, and indicates that the supplier must always discount at least the minimum discount rate. In the example shown in this figure, “designated product” is a computer, “category A” is a desktop personal computer,
“Category B” is a notebook computer. The purchasing system server 100 transmits the top several companies (suppliers C,
Supplier E, Supplier D, etc.) are selected, the selected supplier is determined for each category of the designated product, and registered in the supplier file 128.

Next, product information is registered from the electronic catalog server 500 to the purchasing system server 100 (step S304).

FIG. 5 is a diagram showing an example of an operation image at the time of registering product information in the purchasing system of the present invention. The electronic catalog server 500 provides a website relating to product information such as a manufacturer name, a model number, specifications, a price, and an overview of a product. Product information on a specific product is downloaded from the electronic catalog server 500 to the purchase system server 100 at a certain timing, and stored in the product information file 124.

Next, the selected supplier sets the offer discount rate (or offer price after discount) for each product and sends it to the purchasing system server 100 (step S30).
6).

FIG. 6 is a diagram showing an example of an operation image at the time of setting a provided discount rate in the purchasing system of the present invention.
The supplier terminal 300 determines the offer discount rate (or discount offer price) for each product by using the purchasing system server 1.
Send to 00. Here, the offer discount rate must be a discount rate larger than the minimum discount rate. The purchasing system server 100 stores the provided discount rate in the discount rate file 122.

Next, the user enters the purchasing system server 10.
0 and select a required product (step S
308).

FIG. 7 is a diagram showing an example of an operation image when a product is selected in the purchasing system of the present invention. Purchasing system server 1 transmits product requirements from user terminal 200
00, the purchase system server 100
Accesses the product information file 124 to search for a product that satisfies the required conditions, searches the discount rate file 122 for the discount rate provided by each supplier for the product, and searches the user terminal 200 for these search results. Is returned. Here, the “requirement condition” is, for example, a product model number,
Specifications, system configuration, etc. Further, when the requirement is a system configuration, the purchasing system server 100 provides, together with a provision discount rate of each product constituting the system,
The total amount of the provided prices is transmitted to the user terminal 200.

Next, the suppliers are displayed on the user terminal 200 in the order of the prices of the selected products (step S310).

FIG. 8 is a diagram showing an example of an operation image when a supplier is displayed in the purchasing system of the present invention.
The purchase system server 100 sorts the data sorted in ascending order of the offer price of the selected product (that is, the price obtained by subtracting the discount amount obtained by multiplying the offer discount rate from the offer price) from the offer price for the user terminal 200 to the user terminal 200. Send
The data is displayed on the user terminal 200. Also,
The purchasing system server 100 also transmits the data to the supplier terminal 300, so that the supplier can use the data as a guide for setting a discount rate for providing the product.

Next, the conditions are presented again to the suppliers of the top several offer prices, and the competition is carried out again (step S312).

FIG. 9 is a diagram showing an example of an operation image at the time of re-competition in the purchasing system of the present invention.

When necessary, the user presents further discount conditions to the top two companies and requests a re-estimation. Top 2
The supplier of the company transmits the re-estimation data to the user terminal 200 via the purchasing system server 100.

Next, the user examines the result of the re-estimation,
The supplier to be ordered is determined (step S314).

FIG. 10 is a diagram showing an example of an operation image at the time of ordering a product in the purchasing system of the present invention. The user terminal 200 places an order for the determined supplier via the purchasing system server 100. The purchasing system server 100 stores the contents of the order (eg, user name, supplier name, product name, price, order date, delivery date, payment method, etc.) in the purchase result file 130.

Next, payment processing is performed after delivery and receipt of the goods on the designated day (step S316).

FIG. 11 is a diagram showing an example of an operation image at the time of product delivery in the purchasing system of the present invention.

When the user terminal 200 performs the receiving and receiving inspection via the purchasing system server 100 and transfers the payment to the designated account, the supplier delivers the product to the user on the designated date.

Next, the purchasing system server 100 promotes price competition by causing the supplier to browse the purchase results (step S318).

FIG. 12 is a diagram showing an example of an operation image at the time of viewing purchase results in the purchase system of the present invention.
The purchase system server 100 stores the purchase result file 130
Among them, for example, the total order amount of the user and the order result of each supplier are provided to the supplier terminal 300.

(Other Embodiments) In the above-described embodiment, an example was described in which a request for re-estimation was made to the top two companies with the provided prices, but the present invention is limited to this case. Instead, in other embodiments, the top three
You may request a re-quotation from more than one supplier.

Further, in the above-described embodiment, a case where a personal computer is used as a purchased product has been described as an example. However, the present invention is not limited to this case. It will be obvious to those skilled in the art that the present invention can be implemented when purchasing any product.

Further, in the above-described embodiment, the case where each embodiment is realized independently has been described as an example. However, the present invention is not limited to this case. It is obvious to those skilled in the art that the embodiments can be combined as appropriate.

The storage contents of the file shown in the figure are merely examples, and another storage unit or the like may be stored in the file. Also, as described above, an example of each file is shown,
Although each embodiment has been described, the present invention is not limited to such an embodiment, and any other file or DB may be used. In the above-described embodiment, the discount rate file 122, the product information file 12
4. User file 126, Supplier file 128
And the case where the purchase record file 130 is configured alone is described as an example, but the present invention is not limited to this case, and the above-described files are configured by appropriately combining a plurality of files as necessary. It is obvious to those skilled in the art that the present invention can be implemented in any case.

Further, in the above-described embodiment, the case where the purchasing system server 100, the user terminal 200, the supplier terminal 300, and the electronic catalog server 500 are realized as independent structures has been described as an example. It is obvious to those skilled in the art that the present invention is not limited to the case, and that in any of the other embodiments, any of these can be configured and implemented in combination with each other as appropriate.

The above-described display screen is merely an example for explanation, and the shape on the screen and the arrangement and size of the display area are not limited to the examples shown in the embodiment of the present invention. .

In the above embodiment, the user terminal 2
The provision of information from the purchasing system server 100 to the supplier terminal 300 or the supplier terminal 300 was performed using a technology for browsing the display on a web page.
Information may be transmitted and received by other known communication methods, and communication equipment owned by the user, for example, telephone, fax
May be used, and the communication mode may use a communication method other than the Internet.

Further, in another embodiment of the present invention, the above-described processing executed by the main CPU 102 or the like is performed by a recording medium (for example, a floppy disk, CD-ROM, DVD-ROM, hard disk, or the like) or By recording the program in a transmission medium (for example, a digital data stream, a carrier wave, etc.) in the form of a program and loading the program into a memory of an arbitrary computer, it is possible to execute the program whenever necessary for each device. . That is, in another embodiment of the present invention, the present invention can be implemented as a computer program product loaded and executed on a CPU in a computer system. It is obvious to those skilled in the art that the program defining each means of the present invention can be installed on a computer in many forms. Examples of these forms include: (a) non-writeable storage media that can be used on a computer (eg, a ROM readable by an input / output device of a computer,
A form of information that is permanently held in a CD-ROM disk, DVD-ROM disk, etc., (b) a computer readable writable storage medium (eg, RAM, floppy disk and hard disk) (C) the form of information previously stored in the telephone line, the network, using a communication control device such as a modem, such as a digital data stream or a computer data signal on a carrier. There is a form of information transmitted to a computer through such a transmission medium, and the present invention is not limited to these forms. Therefore,
It is obvious to those skilled in the art that a medium recording a computer-readable program for managing the purchasing method of the present invention provides another embodiment of the present invention.

Various modifications other than those described above are possible. However, as long as the modification is based on the technical idea described in the claims, the modification falls within the technical scope of the present invention.

[0069]

As described above in detail, according to the present invention, it is possible to provide a purchasing system, a purchasing method and a recording medium capable of automatically selecting a supplier presenting the lowest price for a product to be ordered. .

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a system configuration of a purchasing system to which the present invention is applied.

FIG. 2 is a diagram showing an example of a configuration of a purchasing system server 100 to which the present invention is applied.

FIG. 3 is a flowchart illustrating an example of an operation of a purchasing system according to the embodiment.

FIG. 4 is a diagram showing an example of an operation image when a supplier is selected in the purchasing system of the present invention.

FIG. 5 is a diagram showing an example of an operation image when registering product information in the purchasing system of the present invention.

FIG. 6 is a diagram showing an example of an operation image at the time of setting a provided discount rate in the purchasing system of the present invention.

FIG. 7 is a diagram showing an example of an operation image when a product is selected in the purchasing system of the present invention.

FIG. 8 is a diagram showing an example of an operation image when a supplier is displayed in the purchasing system of the present invention.

FIG. 9 is a diagram showing an example of an operation image at the time of re-competition in the purchasing system of the present invention.

FIG. 10 is a diagram showing an example of an operation image at the time of ordering a product in the purchasing system of the present invention.

FIG. 11 is a diagram showing an example of an operation image at the time of product delivery in the purchasing system of the present invention.

FIG. 12 is a diagram showing an example of an operation image at the time of viewing purchase results in the purchase system of the present invention.

[Explanation of symbols]

 100 Purchasing system server 102 CPU 104 Bus 106 Input device 108 Display device 110 Output device 112 Communication port 120 Storage device 122 Discount rate file 124 Product information file 126 User file 128 Supplier file 130 Purchase result file 200 User terminal 300 Supplier terminal 400 Network 500 Electronic catalog server

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Katsumi Takahashi 2-11-1, Nagatacho, Chiyoda-ku, Tokyo NTT Docomo Co., Ltd. (72) Inventor Hoho Kagaya 2-chome Nagatacho, Chiyoda-ku, Tokyo 11-1 Inside NTT DoCoMo, Inc.

Claims (25)

[Claims] 1. A purchasing system in which a user terminal operated by a user who purchases a product, a supplier terminal operated by a supplier providing the product, and a purchasing system server are connected via a network, A means for storing product information relating to the product in a product information file in the purchasing system server; a means for transmitting the offer discount rate of the product to the purchasing system server in the supplier terminal; Means for accessing the product information file of a purchasing system server to select a desired product; and means for transmitting, at the purchasing system server, the discount rate of the supplier relating to the selected product to the user terminal. And a purchasing system comprising: 2. The purchasing system according to claim 1, wherein the user terminal determines a plurality of the supplier terminals according to the provided discount rate, and provides the provided discount rate again to the determined plurality of supplier terminals. A purchasing system further comprising means for requesting the user to make a purchase. 3. The purchasing system according to claim 1, wherein, in the purchasing system server, means for storing a purchasing result in a purchasing result file; and in the purchasing system server, data stored in the purchasing result file. Means for making at least a part accessible from the supplier terminal. 4. The purchasing system according to claim 1, further comprising: an electronic catalog server that provides the product information; and wherein the purchasing system server further includes a unit that downloads the product information from the electronic catalog server. A purchasing system characterized by the following. 5. The purchasing system according to claim 1, wherein the offered discount rate is larger than a minimum discount rate. 6. A purchasing system server connected via a network to a user terminal operated by a user who purchases a product and a supplier terminal operated by a supplier who provides the product, the product information relating to the product being provided. In the product information file, means for storing the discount rate of the product transmitted from the supplier terminal in the discount rate file, and the user terminal accesses the product information file to select a desired product. Means for accessing the discount rate file of the supplier for the selected product by searching for the discount rate file, and transmitting the search result to the user terminal. system. 7. The purchasing system server according to claim 6, wherein when the user terminal determines a plurality of supplier terminals according to the provided discount rate, the provided discount rate is provided to the determined plurality of supplier terminals again. A purchasing system server, further comprising means for requesting the user to make a purchase. 8. The purchasing system server according to claim 6, wherein: a means for storing a purchase result in a purchase result file; and at least a part of data stored in the purchase result file is accessible from the supplier terminal. A purchasing system server, further comprising: 9. The purchasing system server according to claim 6, further comprising: means for downloading the product information from the electronic catalog server that provides the product information. 10. The purchasing system server according to claim 6, wherein the provided discount rate is larger than a minimum discount rate. 11. A purchasing method in a purchasing system in which a user terminal operated by a user who purchases a product, a supplier terminal operated by a supplier providing the product, and a purchasing system server are connected via a network. Storing, in the purchasing system server, product information on the product in a product information file; transmitting, at the supplier terminal, a provision discount rate of the product to the purchasing system server; At the step of accessing the product information file of the purchasing system server to select a desired product; and in the purchasing system server, providing the supply discount rate of the supplier with respect to the selected product to the user terminal. Transmission step. Purchase method to. 12. The purchasing method according to claim 11, wherein the user terminal determines a plurality of the supplier terminals according to the provided discount rate, and provides the provided discount rate again to the determined plurality of supplier terminals. A purchasing method, further comprising the step of requesting the user to make a purchase. 13. The purchasing method according to claim 11, wherein, in the purchasing system server, a purchasing result is stored in a purchasing result file; and in the purchasing system server, data stored in the purchasing result file is stored. Making at least a part accessible from the supplier terminal. 14. The purchasing method according to claim 11, further comprising: an electronic catalog server that provides the product information; and wherein the purchasing system server further includes a step of downloading the product information from the electronic catalog server. Characterized by the purchasing method. 15. The purchasing method according to claim 11, wherein the provided discount rate is larger than a minimum discount rate. 16. A purchasing method in a purchasing system server connected via a network to a user terminal operated by a user who purchases a product and a supplier terminal operated by a supplier that provides the product, the method comprising: Storing the product information relating to the product information file in the product information file, storing the offer discount rate of the product transmitted from the supplier terminal in the discount rate file, and Selecting a product, searching for the offered discount rate of the supplier for the selected product by accessing the discount rate file, and transmitting the search result to the user terminal. How to buy. 17. The purchasing method according to claim 16, wherein when the user terminal determines the plurality of supplier terminals according to the provided discount rate, the user terminal is provided with the determined provided discount rate again to the determined plurality of supplier terminals. A purchasing method, further comprising the step of requesting the purchase. 18. The purchasing method according to claim 16, wherein a purchase result is stored in a purchase result file, and at least a part of the data stored in the purchase result file is made accessible from the supplier terminal. A purchasing method, further comprising: 19. The purchasing method according to claim 16, further comprising a step of downloading the product information from the electronic catalog server that provides the product information. 20. The purchasing method according to claim 16, wherein the provided discount rate is larger than a minimum discount rate. 21. A computer that executes a purchasing method in a purchasing system server connected to a user terminal operated by a user who purchases a product and a supplier terminal operated by a supplier that provides the product via a network. Storing the product information on the product in a product information file, and storing the offer discount rate of the product transmitted from the supplier terminal in a discount rate file on a computer-readable recording medium on which the program is recorded. When the user terminal accesses the product information file and selects a desired product, the provided discount rate of the supplier for the selected product is searched for by accessing the discount rate file, and the search result is obtained. Sending to the user terminal A computer-readable recording medium on which a program to be executed is recorded. 22. The recording medium according to claim 21, wherein when the user terminal determines the plurality of supplier terminals according to the provided discount rate, the user terminal is provided with the provided discount rate again to the determined plurality of supplier terminals. Recording medium, further comprising a step of requesting the user to make a request. 23. The recording medium according to claim 21, wherein a purchase result is stored in a purchase result file, and at least a part of the data stored in the purchase result file is made accessible from the supplier terminal. And a recording medium. 24. The recording medium according to claim 21, further comprising a step of downloading the product information from the electronic catalog server that provides the product information. 25. The recording medium according to claim 21, wherein the offer discount rate is larger than a minimum discount rate.