KR102222822B1 - Linked discount system, method and computer program for shops - Google Patents

Abstract

A method for discount linkage between stores according to an embodiment of the present invention includes the steps of registering as a linkage discount store by connecting to an operation server with a plurality of store terminals provided by each store; The customer terminal querying the product of the linked discount store provided by the operation server through the linked discount application, and requesting an order; Determining whether a linkage discount is possible, and in the case of a linkage discount, applying the linkage discount to complete payment, and transmitting a payment completion result to a customer terminal; The operation server transmitting the order product request and payment completion result to the store terminal of the store in which the product is registered; The store terminal may include a step of checking customer order details including an order product request and a payment completion result, and providing the order product to the customer terminal.

Description

Linked discount system, method and computer program between stores {LINKED DISCOUNT SYSTEM, METHOD AND COMPUTER PROGRAM FOR SHOPS}

The present invention relates to a linkage discount system and method, and more particularly, to a linkage discount system and method for providing a service so that stores that provide products that can be purchased through an application can receive a discount by linking with each other.

Online shopping malls are virtual stores designed and created by computer graphics processing and are opened on the homepage of the World Wide Web server. The customer accesses the cyber shopping mall with a web browser, browses the product list and information on the computer screen, and orders the desired product online.

If the original purchaser who purchased the product for sale at the current online shopping mall is provided with a discount coupon for the product, and the sale product is sold at a discount through the discount coupon, the original purchaser is compensated for the sale, and the discounted purchaser receives the discounted price. You can buy the same product. In addition, modern people can also use online shopping malls using smartphones due to the widespread use of smartphones.

However, the current online shopping mall or mobile remote ordering system provided through a smartphone app provides a point system or basic discount service, but does not provide a link discount service between stores.

Therefore, it is necessary to develop a linkage discount system and method between stores to provide a linkage discount service for this, and to provide a linkage discount service for this, it is necessary to have an advantage or benefit that increases sales price for affiliates and provides enough driving force for customers to use the service. It is on the rise.

Republic of Korea Patent Publication No. 10-2012-0087345 (published on August 7, 2012)

An object of the present invention is to provide a linkage discount system and method between stores capable of providing a linkage discount product between stores, purchase a linkage discount product by executing a linkage discount application through a purchaser terminal, and receive a linkage discount service.

In the linkage discount method according to an embodiment of the present invention, when a store terminal connects to an operation server and registers it as a linkage discount store, the customer terminal queries the product of the linkage discount store provided by the operation server through the linkage discount application. And requesting an order; Determining whether a linkage discount is possible, and in the case of a linkage discount, applying the linkage discount to complete payment, and transmitting a payment completion result to a customer terminal; The operation server transmitting the order product request and payment completion result to the store terminal of the store in which the product is registered; And the step of receiving, by the customer terminal, an order product when confirming the customer order details including a request for an order product and a payment completion result from the store terminal.

In the above, the operation server applies a linkage discount rate in case of a linkage discount store according to a linkage discount rate and a linkage discount rate provided from the store terminal, and applies the default discount rate to pay for the product. It is characterized by performing.

In the above, the operation server, after setting a basic discount rate and a linked discount rate of the store terminal, requesting whether to register a family store on the store terminal; When the operation server accepts the family store registration request of the store terminal, requesting whether to directly search the family store; When the operation server does not directly request a search, the operation server requests whether to search for family store recommendations; Upon acceptance of the family store recommendation search request, the operation server providing a similar store inquiry screen; The operation server further includes displaying on the screen to recommend stores having a priority among the searched similar stores as a store list.

The linkage discount system between stores according to an embodiment of the present invention searches a linkage discount store registered in the operation server through a linkage discount application, orders a linkage discount product, and purchases the product after completing payment for the requested product. A customer terminal provided; It is connected from the store terminal to register a linked discount store and a product targeted for a linked discount, interlocks with a linked discount application executed in the customer terminal to provide a linked discount service between stores, and through a linked discount application from the customer terminal. It includes an operation server that provides a linkage discount service including a request for product provision to a corresponding store terminal and order payment when a linkage discount store registered in the operation server is searched and a linked discount product is ordered.

In the above, the operation server provides a link discount application to the customer terminal in order to provide a link discount service between stores, and a management unit that provides a link discount service such as order confirmation and payment of the customer terminal; A search and recommendation unit that provides a linked discount store search and linked discount product search service by linking with a search DB upon request from the customer terminal, and provides a recommended store and product service upon request from the customer terminal; A history management unit that provides a linkage discount details inquiry, past linkage discount details inquiry, and day/month/year purchase statistics when requested by the customer terminal; And a payment management unit that performs payment services such as product purchase from the customer terminal or a related discount store registration to the store terminal and a commission for product registration.

The inter-store linkage discount system and method of the present invention has the advantage of being able to conveniently provide a linkage discount between stores online to customers through a linkage discount application executed on a customer terminal.

Accordingly, the present invention has an effect of increasing sales to affiliated stores and sufficiently motivating customers to use the service beyond user convenience.

1 is a conceptual diagram of an inter-store linkage discount system according to the present invention.
2 is a block diagram showing the overall configuration of a system for discount linkage between stores according to an embodiment of the present invention.
Figure 3 is a block diagram showing a detailed configuration of the operation server of Figure 2;
4 is an overall flow chart of a method for discount linkage between stores according to an embodiment of the present invention.
5 is a flowchart illustrating a process of a link discount service performed in a customer terminal in a method for link discount between stores according to an embodiment of the present invention.
6 is a flowchart illustrating a process of a link discount service performed in a store terminal in a method for link discount between stores according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention can add, change, or delete other elements within the scope of the same idea. Other embodiments included within the scope of the inventive concept may be easily proposed, but this will also be said to be included within the scope of the inventive concept. In addition, components having the same function within the scope of the same idea shown in the drawings of each embodiment will be described using the same reference numerals.

1 is a conceptual diagram of the inter-store linkage discount system of the present invention, FIG. 2 is a block diagram showing the overall configuration of the inter-store linkage discount system according to an embodiment of the present invention, and FIG. 3 is a detail of the operation server of FIG. It is a block diagram showing the composition.

The inter-store linkage discount system of the present invention includes a customer terminal 100, an operation server 200, and a store terminal 301 and 302.

The customer terminal 100 is a terminal capable of installing and executing a linked discount application accessible to the operation server 200, such as a smart phone, phablet phone, tablet computer, laptop computer, etc. It can be a portable terminal.

The customer terminal 100 can query the linked discount store registered in the operation server 200 through the linked discount application, order a linked discount product, and receive the product after completing payment for the requested product. .

Here, the product delivery method for products that can be purchased through the customer terminal 100 varies according to the type of store. There are two types of stores, for example, the first type is a door-to-door store that customers visit, and the second type is a delivery type store.

Visiting-type stores are again in detail: stores for product sales (restaurants, cafes, clothing, beauty salons, pubs, buffets, etc.), stores for use of places (performance halls, cinemas, art galleries, lodging, amusement parks, etc.), and stores for part-time use (karaoke rooms, billiards, etc.) , Table tennis court, kids cafe, etc.), and stores using gift certificates (marts, convenience stores, etc.), etc., linked discount services can be provided according to the type of store, and if there are new types of stores, linked discount services are provided by newly categorizing them. It could be.

In addition, the delivery-type store is a store that provides a service for receiving products without visiting them when an order is made through the customer terminal 100. Delivery-type stores include, for example, online shopping malls and food delivery-type stores.

In addition, the linkage discount is a linkage discount between stores, and means providing a linkage discount service according to a set linkage discount rate when a product of a linkage discount store registered in advance is used. Here, the linked discount store registered in advance may be an affiliated store registered in the operation server without a separate linked discount store registration process.

For example, as shown in Fig. 1, if a customer (user) visits an art gallery and then stops at a cafe and orders a meal at a restaurant, the linked discount is sequentially applied according to the previously registered art museum-cafe-restaurant linkage discount registration. do. At this time, even if you use only the museum and the cafe, the linkage discount is provided by the linkage discount between the two stores, and the linkage discount can be applied when visiting the restaurant afterwards.Therefore, customers can receive additional discounts when using a large number of stores with linkage discounts. In addition, from the store's point of view, it can attract many customers, thus achieving a win-win strategy.

The operation server 200 can be linked with a linked discount application executed in the customer terminal 100 to provide a linked discount service between stores, and the store terminals 301 and 302 are connected to the linked discount store and product registration. Linked discount services can be provided.

Operation server 200, as shown in Figure 3, in detail the management unit 210, the app linkage unit 220, the member registration unit 230, the login authentication unit 240, the search and recommendation unit 250, It further includes a statistics management unit 260, a payment management unit 270, a member information DB 281, a search DB 282, and a payment information DB 283.

The management unit 210 provides a linked discount application to the customer terminal 100 in order to provide a linked discount service between stores, and registers the linked discount stores and products of the store terminals 301 and 302 and sets a discount rate, and the customer terminal 100 It can provide overall linked discount services such as order confirmation and payment.

The app linking unit 220 may receive and request necessary information by interlocking with a linked discount application executed in the customer terminal 100.

The member sign-up unit 230 receives member information of a customer and a store owner and performs membership registration for a member-only related discount service for a member. Customers are non-members or members, and stores are members-only linked discount services.If a member is a customer, a linked discount point is provided as a reward each time a linked discount store is used, and the points are used for cash payment, or if the member is a store, the store is used by customers. It can be a service such as discounting the product registration fee according to the cumulative number. In addition, when a customer member visits a lower store and makes payment through a higher store (for example, a store located relatively higher than a lower store when connecting stores in FIG. 1), the upper store may receive a reward from the lower store.

The login authentication unit 240 performs login authentication for a linked discount service based on the member information registered as a member.

The search and recommendation unit 250 may provide a linked discount store group search and a linked discount product group search service by linking with the search DB 282 upon request from the customer terminal 100.

In addition, the search and recommendation unit 250 may provide a recommended store and product service upon request from the customer terminal 100. In addition, the search and recommendation unit 250 may provide a service so that the store terminals 301 and 302 can search for recommendations of family or associated discount stores. In addition, the recommendation method can utilize an artificial intelligence algorithm using similarity analysis.

Furthermore, in addition to the similarity calculation method, the dimension of the interaction matrix is reduced and approximated by two or more small matrices with k latent components, and matrix factorization that predicts the grade of each user item by multiplying the corresponding row and column. ) Method can also be used.

In addition, by using an association rule or a mining rule in which frequently consumed items are connected to the edge of the graph, the state space of a set of possible frequent items is explored, and the branch of the infrequent search space is removed. Frequently used item sets are used to generate rules, and these rules can also generate recommendations (recommendations).

For example, when the customer terminal 100 provides a recommended store and product service upon request, the customer's location information is collected, and based on the location, the nearest linked discount store is recommended or the customer's member information is provided. Using this, a related rule may be created in consideration of the customer's age, gender, and hobbies, and a corresponding discount store may be recommended. For example, if the customer's age is in their 20s based on member information, and the customer runs a restaurant browsing blog, it is possible to recommend restaurants with favorite tastes in their 20s as linked discount stores.

Also, if the store terminal (301, 302) provides a service to enable recommendation of family stores or linked discount stores, the coordinates where the store terminals (301, 302) are located or the previously registered store address are converted into latitude/longitude coordinates. Based on location information, it is possible to recommend nearby family stores or linked discount stores, or according to the characteristics of stores or linkage discounts/family discounts between stores and statistics. For example, a restaurant creates mining rules based on the habits of people who often use a cafe after a meal and recommends a cafe as a discount store associated with the restaurant, or a person who uses a pub in the case of a pub and goes to a karaoke room, PC room, or billiard room second. You can also create a related rule based on the pattern and recommend a bar, a karaoke room, a PC room, or a billiard room as a linked discount store. In addition, it is possible to perform artificial intelligence analysis to determine which stores are mainly used through an artificial intelligence analysis based on the statistics of related discounts/family discounts between stores, and recommend a connected store that is frequently used as a result of the performance as a family store.

The history management unit 260 searches on-going linked discount details, past linked discount details, daily/monthly/yearly sales statistics, customer-specific purchase statistics, product-specific sales statistics, and stores-linked discount/family discount details on a customer terminal or It can be provided upon request from the store terminal.

In particular, when registering a family store in the future, through a store terminal, through the analysis of which store the store is mainly used through by checking the store-linked discount/family discount history statistics, which is the visit history statistics of the upper-linked discount store and the lower-linked discount store. You can refer to it. To this end, the operation server recommends stores that can be linked or family discount based on visit history statistics when the store requests a store recommendation service from the store to the store terminal, and provides the store to conveniently select and register a family store.

The payment management unit 270 may perform payment services such as virtual money purchaseable from the customer terminal 100 or a product purchase by cash, or linked to the store terminals 301 and 302, for registration of discount stores and commissions for product registration. .

Further, the payment management unit 270 may employ a virtual account deposit method, a card payment method, and the like, and may be linked with a separate payment agency server for this purpose.

The member information DB 281 may store member information input through the member registration unit 230 for each member.

The search DB 282 may store search information for providing a linked discount store search, a linked discount product search, and a family discount product search service in the search service unit 250.

The payment information DB 283 may receive payment information when payment information is generated as a result of payment for a product purchase by the customer terminal 100 and may be individually stored for each payment case.

The store terminals (301, 302) connect to the operation server 200 to register the linked discount store and the product targeted for the linked discount, purchase the registered product from the customer terminal 100, and link the operation server 200 to the customer. When payment is made in the terminal 100, the product can be provided to the customer terminal 100 after checking the payment result, where the store terminals 301 and 302 are portable terminals such as smart phones, phablet phones, tablets, etc. Can be.

In addition, the store terminals 301 and 302 can use the payment completion result directly transmitted from the operation server 200 to the store terminals 301 and 302 as a method of checking the purchase product payment result. You can prepare the product by receiving the request details. At this time, in the case of a door-to-door store, depending on the characteristics of the store, a method of recognizing two-dimensional codes such as QR codes and barcodes by touching the code scanner provided in the store with the customer terminal 100 after the customer visits directly for product delivery. It is preferable to reconfirm the order product request details together with the payment completion result by using or using an electronic authentication method such as an NFC tag. In addition, when a customer who visits the store clicks the "authentication" button on the screen in which the product ordered by the customer terminal 100 is inquired, the payment history information is transmitted to the store terminals 301 and 302 so that the store employee checks the order details, or When a customer calls a smart phone number, a store employee can directly search through the store terminals 301 and 302.

In addition, the store terminals 301 and 302 set a basic discount rate, a link discount rate, and a family discount rate when registering a link discount store and a product subject to link discount, and apply the corresponding discount rate when purchasing the product of the customer terminal 100 from the operation server 200. Accordingly, the discount rate according to the purchase of the product should be applied.

That is, in the operation server 200, in the case of a linked discount store according to the basic discount rate, the linked discount rate, and the family discount rate, the linked discount rate is applied. have. In the case of a non-linked discount store, the customer may use only one store alone with the customer terminal 100 or use between stores that are not registered as a linked discount store.

Furthermore, when purchasing a product through a customer terminal, the number of products that can be applied with a linked discount may be limited. For example, a customer can purchase a product up to 5 times, filling 5 times starts over from the first, and when a customer purchases the first product, the store may only receive a basic discount if the store provides a basic discount. In addition, from the second to the fifth, a linkage discount and family discount set in addition to the basic discount will be provided. Additional benefits can be provided if all 5 are filled. The linked discount store registered in the operation server 200 provides a linked discount.

In addition, in the case of a store registered as a family, if the store sets a family discount, the customer can receive a family discount in addition to the linked discount for the product. In other words, in the case of a family store, a total of three discount benefits (basic discount, linkage discount, family discount) can be received depending on whether or not the store offers a discount. Silver discounts can be obtained in a variety of ways, and stores can maximize profit creation, which has the advantage of being able to win-win with each other.

Furthermore, the store terminals 301 and 302 may request registration of a family store from the operation server 200, and may directly search for a family store or use a family store recommendation search provided by the operation server 200.

Here, the family store may be a store affiliate (franchise) or a store registered as a family store in advance for mutual sponsorship between stores. In addition, if a group is created that the region, age group, students, housewives, office workers, family, etc. prefer, and related stores are registered in the group, the stores can be referred to as family stores. For example, in the case of the “workers' dinner party” group, stores such as restaurants, cafes, karaoke rooms, and billiards become a family store if they belong to the group.

Furthermore, the store terminals 301 and 302 can periodically change the basic discount rate, the link discount rate, and the family discount rate according to the situation. Statistical information such as annual sales statistics, purchase statistics for each customer, sales statistics for each product, and related discount/family discount statistics between stores can be provided. According to the policy of 200), recommendation priorities may be indicated differently according to statistics.

4 is an overall flow chart of a method for discount linkage between stores according to an embodiment of the present invention.

The store terminals 301 and 302 may register a linked discount store and a linked discount target product in the operation server 200 (S11, S13).

Thereafter, the customer terminal 100 accesses the operation server 200 through a link discount application and searches for a link discount store capable of linking discount (S15).

The customer terminal 100 requests payment for the product of the searched linked discount store (S17).

In the operation server 200, it is possible to check the linked purchase details whether the linked discount of the product requested for payment is possible (S19).

Thereafter, in the case of a linked discount, the payment is completed by applying the linked discount, and the payment completion result is transmitted to the customer terminal 100 (S21).

The customer terminal 100 requests the order product to the operation server 200 after receiving the payment completion result (S23).

The operation server 200 transmits the order product request and payment completion result to the store terminals 301 and 302 of the store in which the product is registered (S25).

The store terminal checks the customer order details including the order product request and payment completion result, and in the case of a link discount, requests to save the link result information to the operation server 200, and if it is not a link discount, it requests to save the visit result information. The order product is provided to the customer terminal 100 (S27, S29).

The operation server 200 stores connection result information or visit result information, and may transmit the payment completion result again (S31, S33).

5 is a flowchart illustrating a process of a linked discount service performed in a customer terminal 100 in a method for a linked discount between stores according to an embodiment of the present invention.

First, it is possible to search for a recommended store provided by the operation server 200 in order to receive a discount by executing a linked discount application in the customer terminal 100 (S40).

Thereafter, the customer terminal 100 searches for a linked discount store that provides a recommended store and a linked discount (S41, S42).

The customer terminal 100 inquires for a product provided by a linked discount store (S44).

After product inquiry in the customer terminal 100, the product may be stored in a storage (cart), and then the family store may be searched for additional discounts (S45, S46). If a family store inquiry is requested, the previous screen can be returned, and if the previous screen is a recommended store group search screen, the process returns to step S40, and if the previous screen is a linked discount store group search screen, it can return to step S42 ( S43).

In addition, after step S45, when a payment is requested, the operation server 200 may query the final purchase product and associated discount information, check whether there is a linked discount store, and apply if there is a linked discount (S48, S49).

Even after the linked discount, it is possible to check whether there is a family store, and if there is a family store, a family discount may be applied (S50, S51, S52, S53).

Even if the linkage discount or family discount is not applied, if there is a basic discount, the basic discount may be applied (S54, S55).

After checking whether all discounts are available, the purchase process is completed (S56).

6 is a flowchart illustrating a process of a link discount service performed in a store terminal in a method for link discount between stores according to an embodiment of the present invention.

The store terminal (301, 302) connects to the operation server 200 and registers it as a linked discount store (S60).

The store terminals 301 and 302 input store information and set a basic discount rate and a linked discount rate (S61, S62, S63).

Thereafter, the operation server 200 requests whether or not to register a family store to the store terminals 301 and 302 (S64).

When the operation server 200 accepts the family store registration request from the store terminals 301 and 302, it requests whether to directly search the family store (S65).

The operation server 200 may provide a region selection screen when directly searching for family stores of the store terminals 301 and 302 (S66).

If the direct search is not requested in step S65, the operation server 200 requests whether to search for family store recommendations (S67).

Upon acceptance of the family store recommendation search request, the operation server 200 provides a similar store inquiry screen (S68, S69).

At this time, the operation server 200 displays on the screen to recommend stores of higher priority among the searched similar stores with a large number of customers inflow as a store list (S70).

In step S64, the family store registration request is not accepted, or after the family store direct search step and the region selection screen (S65, S66) are passed, a store selection screen with high suitability is provided to the store terminals 301 and 302 (S71).

Thereafter, a screen for setting a family discount rate is provided, product information is finally registered, and then the linked discount service registration is completed (S72, S73, S74).

Furthermore, the method for discount linkage between stores according to an embodiment of the present invention may be implemented as a computer program stored in a storage medium for execution through a combination with a computer.

In addition, the operating method of the method for discount linkage between stores according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the present invention, or may be known and usable to those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -Includes magneto-optical media, and hardware devices specially configured to store and execute program commands such as ROM, RAM, flash memory, solid state drive (SSD), and the like. Examples of program instructions include not only machine language codes such as those produced by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like.

In addition, a configuration such as a computer or a computer program used in the present invention has the same meaning as a smartphone or an application running on a smartphone as the shape of the mobile communication terminal is transformed like a smartphone, and as the computing power increases dramatically. Can be used.

100: customer terminal 200: operation server
210: management unit 220: app interlocking unit
230: Member registration unit 240: Login authentication unit
250: Search and Recommendation Department 260: Statistics Management Department
270: Payment management unit 281: Member information DB
282: search DB 283: payment information DB
301, 302: store terminal

Claims (6)

When the store terminal connects to the operation server and registers it as a linkage discount store, the customer terminal queries the product of the linkage discount store provided by the operation server through a linkage discount application, and requests an order;
The operation server determining whether a linkage discount is possible, and in the case of a linkage discount, applying the linkage discount to complete payment, and transmitting a payment completion result to a customer terminal;
The operation server performing a payment for the product by applying a basic discount rate when it is not a linked discount store according to a basic discount rate provided from the store terminal;
The operation server transmitting an order product request and payment completion result to a store terminal of a store in which the product is registered;
The step of receiving, by the customer terminal, an order product when confirming the customer order details including an order product request and a payment completion result from the store terminal;
The operation server, after setting a basic discount rate and an associated discount rate of the store terminal, requesting whether to register a family store on the store terminal;
When the operation server accepts the family store registration request of the store terminal, requesting whether to directly search the family store;
When the operation server does not directly request a search, the operation server requests whether to search for family store recommendations;
Upon acceptance of the family store recommendation search request, the operation server providing a similar store inquiry screen; And
The operation server includes the step of displaying on the screen to recommend stores with priority among the searched similar stores as a store list,
The above family store is a store registered as a family store in advance for mutual sponsorship between store affiliates (franchises) or stores,
The operation server is
For member-only related discount service for members, member information of customers and store owners is entered and registered as a member, and if a member is a store, a service that discounts product registration costs according to the cumulative number of customers using the store is provided, but the customer When a member visits a lower store through an upper store and makes payment, the upper store can receive a reward from the lower store. delete delete In the linkage discount system between stores using the linkage discount method between stores of claim 1,
It is connected from the store terminal to register a linked discount store and a product targeted for a linked discount, and is linked with a linked discount application executed in the customer terminal to provide a linked discount service between stores, and through a linked discount application from the customer terminal. It includes an operating server that provides a linked discount service including a request for product provision through an order payment and a corresponding store terminal when inquiring a linked discount store registered in the operation server and ordering a linked discount product,
The operation server is
A management unit that provides a linked discount application to the customer terminal to provide a linked discount service between stores, and provides a linked discount service such as order confirmation and payment of the customer terminal;
A search and recommendation unit for providing a linked discount store search and a linked discount product search service by linking with a search DB upon request from the customer terminal, and providing recommended stores and product services upon request from the customer terminal;
A history management unit that provides a linkage discount details inquiry, past linkage discount details inquiry, and day/month/year purchase statistics when requested by the customer terminal;
A payment management unit that performs a payment service such as a product purchase from the customer terminal or a linked discount store registration to the store terminal and a commission for product registration; And
For member-only related discount service for members, member information of customers and store owners is entered and registered as a member, and if a member is a store, a service that discounts product registration costs according to the cumulative number of customers using the store is provided, but the customer When a member visits and pays for a lower store through a higher store, the upper store is a linkage discount system that further includes a member sign-up unit to receive rewards from the lower store. delete A computer program stored in a computer-readable storage medium that performs the linkage discount method between stores of claim 1.

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