A PRACTICAL EXAMPLE: INTERNET BANKING SYSTEM

By -
A PRACTICAL EXAMPLE: INTERNET BANKING SYSTEM

Here we will explain an Internet banking system as a practical example of a C / S system. An Internet banking service is an online financial service that is offered on the Internet. The system offers various financial services, such as inquiry for bank balance, inquiry for payment details, and fund transfer to customers via the Internet.

We will explain the flow of transactions in C / S processing through an example of fund transfer service between a customer’s account in bank A and another account in bank B. Figure 20 shows the flow of processing for the example.

Step 1: A customer connects to the Internet from a desktop personal computer in his home or office and accesses the site of bank A, which offers the Internet banking service, by using a Web browser.

Step 2: At the top menu of the Web page, the user is asked to enter his or her user ID and password already registered. According to the indication on the Web page, the user inputs user ID and password into the input field on the Web page.

Client-Server Technology-0414

Step 3: The entered user ID and password are sent back to the server via the Internet by the secured communication protocol HTTPS. The server receives that information and checks information on the database that accumulates information about the client and other various data. If the user ID and password correspond to those already registered, the customer is permitted to use the service.

Step 4: The customer selects ‘‘fund transfer’’ from the menu displayed on the Web page.

Step 5: The server receives the above request, searches the database, and retrieves the customer’s account information.

Step 6: After confirming that there is enough money for payment in the customer’s account, the server asks another server in bank B for processing of deposit. In this case, the server of bank A becomes ‘‘client’’ and the server of bank B becomes ‘‘server.’’

Step 7: After the server of bank A confirms that the processing was completed normally in the server of bank B, it updates (withdraws) the account information of the customer in the database. The acknowledgement that the request for fund transfer is successfully completed is also displayed on the customer’s Web page.

Comments

Post a Comment

Popular posts from this blog

NETWORK OPTIMIZATION MODELS:THE MINIMUM SPANNING TREE PROBLEM

By -
Image
THE MINIMUM SPANNING TREE PROBLEM The minimum spanning tree problem bears some similarities to the main version of the shortest-path problem presented in the preceding section. In both cases, an undi r ecte d and connected network is being considered, where the given information includes some mea- sure of the positive length (distance, cost, time, etc.) associated with each link. Both problems also involve choosing a set of links that have the shortest total length among all sets of links that satisfy a certain property. For the shortest-path problem, this property is that the chosen links must provide a path between the origin and the destination. For the minimum spanning tree problem, the required property is that the chosen links must provide a path between ea c h pair of nodes. The minimum spanning tree problem can be summarized as follows: 1. You are given the nodes of a network but not the links. Instead, you are given the po- tential links and the positive length for each
Read more

DUALITY THEORY:THE ESSENCE OF DUALITY THEORY

By -
Image
THE ESSENCE OF DUALITY THEORY Given our standard form for the primal problem at the left (perhaps after conversion from another form), its dual problem has the form shown to the right. Thus, with the primal problem in maximizatio n form, the dual problem is in minimization form instead. Furthermore, the dual problem uses exactly the same pa r amete r s as the primal problem, but in different locations, as summarized below. 1. The coefficients in the objective function of the primal problem are the right-hand sides of the functional constraints in the dual problem. 2. The right-hand sides of the functional constraints in the primal problem are the coef- ficients in the objective function of the dual problem. 3. The coefficients of a variable in the functional constraints of the primal problem are the coefficients in a functional constraint of the dual problem. To highlight the comparison, now look at these same two problems in matrix notation (as introduced at the beginn
Read more

NETWORK OPTIMIZATION MODELS:THE SHORTEST-PATH PROBLEM

By -
Image
THE SHORTEST-PATH PROBLEM Although several other versions of the shortest-path problem (including some for directed networks) are mentioned at the end of the section, we shall focus on the following simple version. Consider an undi r ecte d and connected network with two special nodes called the origin and the destination. Associated with each of the links (undirected arcs) is a non- negative distance. The objective is to find the shortest path (the path with the minimum total distance) from the origin to the destination. A relatively straightforward algorithm is available for this problem. The essence of this procedure is that it fans out from the origin, successively identifying the shortest path to each of the nodes of the network in the ascending order of their (shortest) distances from the origin, thereby solving the problem when the destination node is reached. We shall first outline the method and then illustrate it by solving the shortest-path problem encountered by the See
Read more