1) Discuss how MasterCard could use its data warehouse to help it expand each of these customer bases.Credit cards has brought the major evolution in the peoples lives since the last decade.They have made the life of people much more easier by not making them not to carry cash in hands and it also became a major business for many banks. The Credit card business made alive by using big data. Since all the Credit cards work by warehousing the data. Mastercards aim is to give access of their customers information directly to the corresponding banks and also the tools to manage the information which is possible by using BIg Data. Many organizations are working hard to understand the opportunities and challenges corresponding with “big data” . This global data changed itsidentity into Business Intelligence that allows all the credit card management services and its users to rely on technology to manage the data.MasterCard has accumulated a data warehouse that is greater than 800000gb in size and company experts expect that there will be an substantial increase of more than 1.8 petabytes. The advancement of MasterCard’s information repository is intensed by a client/server network that, on average, manages 140 million credit card transactions in an hour on behalf of more than 25,000 financial institutions WALL08. In 2007, MasterCard’s worldwide network operated 18,700 million transactions totaling approximately $2300 billion.Even though visa card is big win in the business field master card had been winner in world wide and international usage because it estimates its network to respond at a rate of 140 milliseconds per trasactions.how ever bot only the mastercard but there is an substantial increase in the usage of visa,American express and money transfer application,data repository plays an important role in building and using applications as well. Master card encourages it customers by introducing many reward programs for their users like travel benefits,travel credits,free hotel stays,gift cards for the loyal customers to increase the customer satisfaction.In order to provide all these benefits for the users mastercard has to join hands with airways,retail stores and hotel chains etc. Financial firms can depend on the history of credit card payments and activity to contribute the data for specific merchandising and commerce. For example, a financial firm that issues credit cards may have a huge number of travel payments on a specific airways. The firm can use this data to make a deal with the airways to provide special offers and incentives to card users.How ever mastercard doesnt only make peoples life easier by cashless purchasing it is also important for the users that the purchases they make are safe ,secured and private.Inorder to provide security for the users mastercard came up with some tools where some are develped inhouse and some third party tools through which credit card fraud,theft and security issues have been resolved.Apart from this tools which contribute to the security of the user there is also something called Market center which encourages the user to check,manage their spending online and also to increase their purchases at certain areas to reciev more benefits. In the recent days managing the spending and using these tools increased rapidly since every user can use them in their mobiles conveniently with online applications developed by the banks authenticated by the users.user request is forwarded to the transaction server were it enables the specific application software used for this procedure and the application changes the request into the specific information access and updates.The transaction server forwards a transaction request to the data warehouse, which processes the request and returns a response to the member user.