JP2002099761A - Method and system for mediating electronic commerce and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect the addition of erroneous information or the change and deletion of a part of information in electronic commerce and the alteration of electronic data even if they occur, to prevent illegal behavior (a), to eliminate the restriction of the participation of a purchaser and a supplier as an open system (b) and to prevent information (contents) on a commodity and service (hereinafter, called as commodity) from becoming commonplace (c). SOLUTION: An electronic commerce mediating method mediates transactions between the plural suppliers of the commodities and purchasers through a digital data communication network. The method has respective processes for preliminarily storing a standard code system showing the correspondence of a supplier side classification code system showing the commodity or service of the supplier and a purchaser side classification code system (a), permitting an agent to mediate the purchaser and the supplier based on the standard code system (b), permitting the agent to record the transaction result of a process (b) into a storage medium which cannot be rewritten (c) and preserving the storage medium (d).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of mediating electronic commerce for realizing electronic commerce between a plurality of suppliers or purchasers of products or services connected via a digital communication network such as the Internet. , A system, and a storage medium.

[0002]

2. Description of the Related Art FIG. 1 shows an example of a flow of a typical procedure in the current Internet electronic commerce. Shown here is the seller (the supplier may itself be the seller)
Internet traders (sales companies) and user departments as buyers conduct direct business transactions. An Internet company (sales company) distributes a product catalog (usually a genuine book) to users (purchasers) for the purpose of receiving orders via the Internet. Instead of a product catalog, an internet company (sales company) creates a homepage for each company, publishes product information on this homepage, and prepares for an order.

[0003] In a user section (general purchase, net purchase, purchaser), a manufacturer part number of a required product is selected with reference to a product catalog or a homepage distributed to each Internet trader. The user (purchaser) places an order for each company using an order number (product number) set for each company (company) using the Internet. The user (purchaser) usually orders the price, delivery date, and the like directly under the conditions set on the catalog or the homepage, without going through the purchasing department of the company. In addition, in order to manage purchase orders, the information is entered into the company's purchasing system.

[0004] The order processing section of the Internet company (sales company side) processes the order, and arranges the products according to the order number of the product code system of the company and ships the products to the user by company delivery or courier service. In many cases, a delivery note is also sent together with the product. The delivery date and price are determined according to the conditions specified on the product catalog or on the Internet homepage, and the invoice is issued individually or on a monthly basis. In the user department, the goods are received and accepted, and if there is no problem, the invoice is sent to the accounting department to request payment processing. The accounting department pays according to the bill. In the accounting department of an internet company (sales company)
Apply for receivables after receiving notice from bank.

[0005] With the expansion of the scale of e-commerce, an intermediary business for mediating procedures between a supplier (manufacturer) and a purchaser (user) has been proposed on the Internet, and computer technology and communication technology for realizing this have been proposed. Many have been developed. FIG. 2 shows the current state of the intermediary business via the Internet. At present, there are many Internet brokerage businesses such as general purchasing nets and company homepages, but they can be roughly divided into a sales system (1) centered on companies (sellers and suppliers) and a sales system (2) centered on markets.

[0006] The sales system (1) centered on the first company (seller, supplier) is often adopted by a company with a strong sales force or a sales Internet company, and the Internet technology is used for conventional sales operations. In many cases, e-commerce can be performed. In Japan, a specific example of the introduction of such a company (seller) -centered sales system is the sales system of ASKUL Co., Ltd., which sells office supplies.

A second market-centric sales system (2) is:
Introduces an Internet intermediary business centering on a specific product market, and publishes a purchasing / sales network that has purchasing and sales functions in a specific product market. In this sales system, in many cases, market participants are members. For example, in Japan, Rakuten Ichiba, YAHO
There is an electronic market with a SHOP function known by the name such as O auction. FIG. 3 shows the opening status of a content-centric portal site in operation in the United States, and a search screen and a search result screen of Chipcenter.com, which is a representative thereof.

[0008]

In the current electronic commerce of the Internet business, erroneous information is added to electronic commerce data due to a network system failure, line noise, or the like, or partial information is changed.・ It may be deleted. Also, in electronic commerce, electronic data is relatively easy to be tampered with, so it is necessary to cope with intentional or malicious tampering. In particular, the amount of money may be large in electronic commerce between companies, and transaction records are important from the viewpoint of security in order to deal with any problems occurring in electronic commerce. Further, when there is a request from a public organization such as tax affairs, it is necessary to be able to read the transaction record.

[0009] In the market-centric sales system (2), the electronic commerce between companies is usually a membership system, and the purchaser side (user)
A business transaction is performed only within the group between members limited between the supplier and the supplier (supplier). This system is therefore closed. Such systems also need to be easy to deal with if something goes wrong with e-commerce, and because of this security, there is a tendency for limited members to conduct commerce only within the group. There is. As described above, since the limited members are only allowed to conduct business transactions within the group, and new product information other than the members does not enter, there is a problem that product information (contents) in the electronic market is likely to become obsolete.

The present invention has been made in view of such circumstances, and (a) finds even if erroneous information in electronic commerce is added or partial information is changed or deleted, and electronic data is falsified. It is possible to prevent such misconduct, and (b) remove the restrictions on entry to buyers and suppliers as an open system,
(C) A first object is to provide an e-commerce mediation method capable of preventing information (content) of a product or service (hereinafter also referred to as a product or the like) from becoming obsolete.

It is a second object of the present invention to provide an electronic commerce intermediary system directly used for implementing the method. It is a third object of the present invention to provide a storage medium that can be used directly for implementing the method.

[0012]

According to the present invention, a first object is an electronic commerce mediating method for mediating a commercial transaction between a plurality of suppliers of products or services and a purchaser via a digital data communication network, (A) storing in advance a standard code system indicating a correspondence between a supplier-side classification code system indicating a supplier's product or service and a purchaser-side classification code system;
(B) the mediator mediates between the purchaser and the supplier based on the standard code system; (c) the mediator records the transaction result of step (b) on a non-rewritable storage medium; (d) A) storing the storage medium; an electronic commerce mediating method comprising the above steps.

The contents of the storage medium stored in step (d) are as follows:
As a general rule, of course, confidentiality is maintained, but it can be read only in specific cases. For example, when there is a request from a purchaser or a supplier who is a party to a commercial transaction, it is possible to read out only the transaction results related to these parties and to present the results to the parties. Further, for example, when there is a request from a public organization such as tax-related matters, the transaction contents of a specific purchaser or supplier may be read.

Using the transaction result read from the storage medium,
Information for enabling a more advantageous transaction to the purchaser may be created and presented to the purchaser. For example, supply destinations of equivalent products and the like are presented, and alternative products and the like are introduced. Conversely, for the supplier, sales information related to supply that is advantageous to the supplier may be created and presented to the supplier. For example, the requirements of the purchaser on the product or the like are presented to the supplier, and the supply of the product or the like that can be sold is urged.

[0015] Further, the transaction result of the past commercial transaction may be copied or modified to prompt the next commercial transaction, and the result may be recorded on a non-rewritable storage medium. Similarly, a change or cancellation of a commercial transaction may be enabled, and the result may be recorded on a non-rewritable storage medium.

In the step (b), the data indicating the contents of the intermediary presented by the intermediary to the buyer can be, for example, data corresponding to an order slip issued by the supplier to the buyer. Data such as a quote, a tally result, and a payment arrangement may be used. Further, the data presented by the intermediary to the supplier in step (b) can be data corresponding to an order slip issued by the purchaser to the supplier, and other results of aggregation, shipping arrangement, and payment processing Such data may be used. In this way, if the intermediary creates data corresponding to the receipt / order slip and sends it to the supplier / purchaser, the supplier /
Not only will the purchaser be able to reduce the slip processing work, but also this data will be converted to the one corresponding to the code system of the in-house computer of the supplier / purchaser through the standard code system and presented, so that the supplier and the purchaser can Makes subsequent processing easier.

If the intermediary adds the ID (identification symbol) of the purchaser / supplier to be the business partner to the data of the receiving / ordering slip sent to the supplier / purchaser, the intermediary can receive / order the data. The processing procedure can be performed smoothly and is convenient. Since the intermediary can grasp the transaction contents of the supplier and the purchaser based on the standard code, it becomes possible to perform ordering processing on behalf of the supplier and the purchaser. This allows suppliers and buyers to perform complicated ordering processes and related accounting processes by an intermediary, making it easier for suppliers and buyers to enter the e-commerce market. Becomes possible.

According to the present invention, a second object is an electronic commerce mediation system for mediating a commercial transaction between a plurality of suppliers of a product or service and a purchaser via a digital data communication network. A database storing a standard code system for indicating a correspondence between a supplier-side classification code system indicating a product or a service and a purchaser-side classification code system; a supplier-side computer connected to the digital data communication network; A purchaser-side computer connected to the digital data communication network; and an intermediary-side computer connected to the digital data communication network, wherein the intermediary-side computer communicates with the purchaser based on the standard code system. It mediates commercial transactions with the supplier, records the transaction results of the mediated commercial transactions on a non-rewritable storage medium, and stores this storage medium. To; is achieved by an electronic commerce mediation system, characterized in that.

According to the present invention, a third object is to provide
7 is achieved by a recording medium that records a program for causing a computer to execute any one of the methods.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a business-to-business electronic open market (portal) is established as a neutral intermediary that does not belong to a purchaser (user) or a supplier (supplier). In this neutral business-to-business electronic open market (portal), products and contents are presented to suppliers and purchasers using their respective classification code systems, and product (content) classification and attribute information for each classification are standardized. The attribute information is commonly used by the buyer (user) and the seller (supplier).

When an electronic market operation company (intermediary) that operates a neutral business-to-business electronic open market (portal) determines that the processing of the electronic commerce is neutral, the electronic commerce cannot be rewritten. Record on a recording medium. The inter-company electronic open market (portal) operating company keeps a recording medium that records the history of the electronic commerce in principle, with confidentiality maintained. When troubles occur in e-commerce, or when responding to tax audits or accounting audits, etc., records of e-commerce histories are disclosed in a specific range from a neutral standpoint. By thus limiting the disclosed range, the reliability of the transaction is ensured. Further, since the storage medium is not rewritable, the storage contents cannot be changed or falsified, and the reliability of the disclosed contents is ensured. FIG. 4 shows a conceptual diagram of the transaction history of the inter-company electronic open market (portal) in the Web environment.

FIG. 5 shows a schematic flow of electronic commerce in a business-to-business electronic open market (portal) in a Web environment. This business-to-business open market (portal) is in a Web environment on the Internet, so anyone can see it. Also, access is possible from EDI or the like, which is a conventional technique. In the inter-enterprise electronic open market (portal), when the electronic open market operating company determines the processing of the electronic commerce from a neutral standpoint, the electronic commerce is recorded on a non-rewritable medium.

FIG. 6 is an overall schematic diagram (transaction history record) of the inter-company electronic open market (portal) in the Web environment. FIG.
In the overall schematic diagram of FIG. 7, the overall flow is roughly composed of three parts. The first part is the part from searching, narrowing down, comparing, selecting and storing in the Shopping Cart. The second part is a part for starting negotiations, calculating an estimate, determining purchase conditions, and finalizing a purchase / ordering order. The third part is a part for issuing a purchase / ordering order, arranging shipment of the product to the sales company (supplier), and notifying the purchaser (user) of the issuance of the purchase order.

In the overall schematic diagram of FIG. 6, after the flow of the second part of the overall flow (the process of starting negotiation, calculating the estimate, determining the purchase conditions and creating a purchase / order order), When you deliver a purchase / order,
At the same time, the e-commerce company determined by the e-marketing company records the e-commerce transaction in a non-rewritable storage medium.

FIG. 7 shows a diagram of a transaction record in the purchase order flow. In this series of flows, a queue based on MQ (Message Queuing: MQ1 and MQ2 shown in FIG. 7) technology is provided in the middle of a system having a different design philosophy to share the delivery of messages and perform pseudo-real processing. I do. This allows for reliable connections between systems at low cost. It is also possible to record transaction records continuously for a long time without stopping the system.

In the MQ technology used here, an intermediary computer having a queuing function is interposed between a computer system of a supplier and a computer system of a purchaser having different design ideas, and messages to be transferred are shared and stored. For this reason, it becomes possible for the supplier and the purchaser to perform pseudo-real processing in which processing is performed at intervals such that actual messages are transmitted and received.
In this way, both the purchaser (user) and the supplier (supplier) can use the MQ (Message Queuing) technology to provide a cheaper and more flexible connection than the conventional business-to-business electronic commerce (EDI) connection. Resulting in low development costs. In addition, it becomes possible for both participating buyers (users) and suppliers (suppliers) to quickly and easily perform inter-company electronic commerce (EDI).

The creation of a transaction record at the time of a purchase order in FIG. 7 is roughly as follows. Classify the shopping cart, create purchase / order orders for each company, and pass them to MQ1. The message is taken out from the MQ1, the standard code is converted into a unique company code together with the attached data, and passed to the MQ2. When it is converted to a unique company code and passed to MQ2, it is recorded in the transaction history file at the same time. The transaction history file is sorted for each company and recorded in a non-rewritable file. Each company can search only its own parts upon request.

When the system creates a transaction record at the time of a purchase order shown in FIG. 7 continuously for a long period of time, or when a large amount of records is required, the transaction history record file may overflow. In order to cope with such a case, FIG. 8 shows a flow chart of continuously creating transaction history records. The transaction history record creation flow continuously records and stores the transactions on a non-rewritable CD-ROM or the like while sequentially recording the transactions by the following process.

When the purchase / order is confirmed, the transaction contents are sent to the purchase side and the supply side. A plurality of transaction history files (1 to n) are prepared, and transaction history files (for example, file 1) in which data of the same contents sent to the purchasing side and the supplying side can be sequentially written can be written.
Write to. A plurality of transaction history files (1 to n) are appropriately set so as not to overflow according to the continuous period of the system or the amount of data to be recorded.

The capacity written in one transaction history file (eg, file 1) is a non-rewritable medium (eg, CD-ROM).
Immediately before the writing capacity of one (1) sheet becomes almost the same, the writing to the transaction history file is completed, and the process proceeds to the next sequentially recordable transaction history file (for example, file 2). In the next transaction history file (for example, file 2) in a sequentially writable state, the data of the same contents sent to the purchase side and the supply side in the above step are written in the purchase history file (for example, file 2). The data of the same contents sent to the purchasing side and the supplying side, which are the steps in this order, are sequentially written in the transaction history file.

The contents of a transaction history file (for example, file 1) whose written data capacity is almost the same as the write capacity of a non-rewritable storage medium (for example, one CD-ROM) are classified by company (group) and by classification. Sort to
Sorting may not always be necessary, but sorting by company and group is useful for later searching and creating reports.

The sorted transaction history file (for example, file 1) is recorded on a non-rewritable medium (CD-ROM or the like) and stored on the non-rewritable medium (CD-ROM or the like). When the recording on the non-rewritable medium is completed, the transaction history file (eg, file 1) is initialized and sequentially written in a transaction history file (eg, file n)
In preparation for subsequent writing. A medium in which the transaction history file cannot be continuously rewritten in this way (CD-ROM, etc.)
And store this non-rewritable medium (CD-ROM, etc.).

FIG. 9 shows a flow for creating a transaction history report. Create a transaction history report by the following process. During the period, a search request for transaction history is accepted for each user company name. Going to read the transaction history file on the storage medium that cannot be rewritten by the period and user company name In the case of a report by user company Read the contents sorted by user company for the required period. If a plurality of user companies are required, sort and aggregate for each user company and report the transaction history.

In the case of analysis by user company group and classification: The transaction history report by user company is further sorted and grouped for each user company group or classification, and the transaction history is reported. In the case of a detailed order report The transaction history totaled for each group or classification of the user company is sorted, if necessary, by manufacturer or product number, and the transaction history is reported. At the request of the user company or public institution, the various transaction history reports described above are recorded on a non-rewritable storage medium (CR-ROM, etc.) that is output or printed on paper and delivered.

FIG. 10 shows an example of a transaction history report. An example in which a transaction history is reported for each user company to create a statement will be described. For each item of the transaction history report, calculation is performed using the basic data of the corresponding analysis item according to the flow of FIG. A transaction history report is created for each user company, and if requested by the user company, it can be output to e-mail, paper, or non-rewritable media (CD-ROM, etc.) and passed to the user company. The report number is generated and managed by a combination of the user company and the analysis period. The transaction content is stored in a non-rewritable storage medium with this number, and is prepared as a record of the transaction for future reference. Reports classified by user company are used when making inquiries from companies and public institutions for the purpose of maintaining fair business transactions.

FIG. 11 shows an embodiment of the mechanical configuration. NT / UNIX (registered trademark) for Web server
Use a UNIX server for server and database.
In this embodiment, since the search Web server and the database server are separated from each other, security on the Web and a large number of accesses can be sufficiently coped with. Aspect of Web Front for Web search in Web server environment.
Web front such as net, UNIX server for database, content DB, search engine, ShoppingCart, transaction item creation program, purchase and order creation program, code conversion database, etc. are stored.

The Web user environment shown in FIG. 6 is an entrance to a home page on the Internet. In this Web user environment, content registration, content search, content refinement and comparison, content selection, purchase order creation instruction, and the like are performed. On the other hand, UNIX servers for databases use Aspect eXplore (Orac) as a search engine.
le RDB) and its contents, pre-transaction condition files, code conversion tables, etc., to create a database environment. The e-market operator operates a pre-condition file and code conversion table, a purchase and order creation program, a transaction history recording program, and MQ (Message
Queuing) is developed and operated independently. The connection between the user's own systems uses MQ (Message Queuing) to ensure low cost and flexibility.

A transaction history record and transaction history report creation program created on a storage medium (CD-ROM or the like) that cannot be rewritten by the transaction history recording program is an NT / UNIX server for a Web server shown in the embodiment of the machine configuration. Separate from the UNIX server for the database. A transaction history record created on a non-rewritable storage medium (such as a CD-ROM) in response to a transaction history inquiry request is structured such that a transaction history record report is created by a transaction history report creation program.

[0039]

According to the first aspect of the present invention, the mediator mediates the purchaser and the supplier based on the standard code system,
Since the transaction result is recorded on a non-rewritable storage medium and the storage medium is stored, it is possible to cope with a case where erroneous information is added to data due to a system failure in a network or line noise from a security aspect. As a result, the reliability of the purchaser / supplier is improved, and it is possible to enter this e-commerce market with confidence.

In electronic commerce, since electronic data is relatively easy to be tampered with, it is necessary to cope with tampering by malicious intent. Especially in the case of e-commerce between companies, the transaction amount may be large and the transaction record is important from the viewpoint of security. However, according to the present invention, the transaction record is recorded on a non-rewritable storage medium, so that failure caused by malicious tampering is prevented. It is also possible to conduct large transactions with confidence.

Even if a trouble occurs in the electronic commerce, it is fair and fair that a neutral intermediary records the electronic commerce between the companies from the purchaser side and the supplier side of the parties. Also, this neutral mediator is the buyer,
By recording the transaction histories of both suppliers and maintaining confidentiality, it becomes possible to make the system more reliable in inter-company electronic commerce. For this reason, there is no security obstacle, which may lead to expansion of e-commerce.

Further, if there is a guarantee that the transaction history is recorded, it is possible to lower the security level from the viewpoint of the system. Costs for avoiding system failure in the network, costs for preventing erroneous information from being added to data due to line noise, and the like are reduced. This results in significant cost reductions for both the purchaser (user) and the supplier (supplier). Inexpensive business-to-business e-commerce (EDI) connections can lead not only to large e-commerce transactions, but also to e-commerce expansion to all small and medium-sized business partners, including small and medium enterprises. For this reason, it is possible to expand e-commerce to all business partners, including small and medium-sized companies, if they are really good, rather than the exclusive control of large companies.

That is, it becomes possible to make the system open, and it is possible to eliminate entry restrictions on purchasers and suppliers. As a result, it is possible to prevent the information on the products and the like from becoming obsolete.

The contents of the storage medium are kept confidential in principle,
At the request of the purchaser or supplier who is the party to the commercial transaction, if the transaction results related to these parties are read and presented, the purchaser or supplier can easily confirm the past transaction Is convenient (claim 2).
If the contents of the transaction are read from the storage medium at the time of a request from a public organization such as a tax-related organization, it can be used for legal use, and the reliability of this system is further improved (claim Item 3).

According to the fourth and fifth aspects, using the contents of the stored storage medium, advantageous purchase information and sales information are created for purchasers and suppliers who are parties to a predetermined commercial transaction. That is, it is possible to mediate e-commerce transactions that are advantageous to each other, using purchase information that is advantageous to the purchaser and sales information that is advantageous to the supplier.

According to the sixth aspect, when the purchaser repeatedly purchases, the intermediary reads out and presents the contents of the past transaction from the storage medium, and copies and modifies the past transaction record for use. can do. For this reason, the content read from the storage medium enhances convenience when repeating purchases,
In that case, it helps to reduce erroneous input.

According to the seventh aspect, the contents of the stored storage medium can be used for the change and cancellation of the electronic commerce for the supplier and the purchaser. For this reason, the content read from the storage medium is useful for improving convenience when changing or canceling the transaction content and reducing the possibility of erroneous input at that time.

According to the invention of claim 8, there is provided a system used for carrying out the method of the present invention. According to the eleventh aspect, a recording medium that records a program for causing a computer to execute the method is obtained.

[Brief description of the drawings]

FIG. 1 is a diagram showing the current state of Internet e-commerce

FIG. 2 shows the current state of the Internet business

FIG. 3 is a diagram showing the opening status of content-centric portal sites in the United States

FIG. 4 is a diagram showing a conceptual diagram of a transaction history record in an inter-company electronic open market (portal).

FIG. 5 is a diagram showing a schematic flow (transaction history record) of electronic commerce.

FIG. 6 is a diagram showing an overall schematic diagram (transaction history record) of an inter-company electronic open market;

FIG. 7 shows a transaction record in a purchase order flow.

FIG. 8 is a diagram showing a flow for continuously creating transaction history records.

FIG. 9 is a diagram showing a flow of a transaction history report.

FIG. 10 is a diagram showing an example of a transaction history report.

FIG. 11 is a diagram showing an embodiment of a mechanical configuration.

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Claims (11)

[Claims] 1. An electronic commerce intermediation method for mediating a commercial transaction between a plurality of suppliers of a product or service and a purchaser via a digital data communication network, comprising: (a) indicating a product or service of the supplier; A standard code system indicating the correspondence between the supplier-side classification code system and the purchaser-side classification code system is stored in advance; (b) The mediator mediates between the purchaser and the supplier based on the standard code system. (C) an intermediary records the transaction result of step (b) on a non-rewritable storage medium; (d) saves the storage medium; Method. 2. The method according to claim 1, wherein, after the step (d), the following step (e): (e) a request from a purchaser or a supplier who is a party to a commercial transaction from the storage medium stored in the step (d). If there is,
Retrieve and present transaction results relating to these parties;
An e-commerce mediation method comprising: 3. The method according to claim 1, wherein the step (d) is followed by the following step (e-1): (e-1) When a request from a storage medium stored in the step (d) is made by a public organization. A transaction content related to a specific purchaser or supplier. 4. The method according to claim 1, wherein, after the step (d), the following step (e-2); (e-2) using the transaction result recorded on the storage medium, E-commerce method comprising: creating and presenting to a purchaser information relating to a supplier or an alternative product and / or service that leads to a more advantageous purchase than a product and / or service purchased in the past. . 5. The method according to claim 1, wherein, after the step (d), the following step (e-3); Creating and presenting to the supplier sales information that leads to a more advantageous supply than the products and / or services previously supplied by the supplier. 6. The method according to claim 2, wherein the step (e) is followed by the step (f); (f) the execution of the next commercial transaction by copying or modifying the past transaction result presented in the step (e). And recording the result in the non-rewritable storage medium. 7. The method according to claim 2, wherein, after the step (e), the step (f-1) is followed by the step (f-1). And recording the result in the non-rewritable storage medium. 8. An electronic commerce intermediation system for mediating a commercial transaction between a plurality of suppliers of a product or service and a purchaser via a digital data communication network, wherein the supplier side indicates the supplier's product or service. A database storing a standard code system for indicating a correspondence between the classification code system and the purchaser's classification code system; a supplier computer connected to the digital data communication network; and a computer connected to the digital data communication network A mediator computer connected to the digital data communication network, wherein the mediator computer mediates business transactions between the buyer and the supplier based on the standard code system. And recording the transaction result of the mediated business transaction on a non-rewritable storage medium, and storing the storage medium. Commerce mediation system. 9. The electronic commerce mediating system according to claim 8, wherein the mediator computer reads out and presents a transaction result related to the parties from a storage medium based on a request of a purchaser or a supplier who is a party to the commercial transaction. . 10. The intermediary computer according to claim 9, wherein the mediator-side computer presents a transaction result to the purchaser and supplies the product and / or service purchased by the purchaser in a more advantageous manner to the purchaser. An e-commerce intermediary system capable of presenting information about a preceding or alternative product and / or service. 11. A recording medium on which a program for causing a computer to execute the method according to claim 1 is recorded.