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While transactional processing through the use of “message queues” is a common approach in ADW today, the file-oriented approach is also begining to find its way into ADW due to its simplicity in nature and ease-of-control. Today, many companies monitor and store thousands--or hundreds of thousands--of transactions per day across their branches and stores. Transactional data is usually collected and stored as files in directories, before being merged into the enterprise-wide data warehouse. In fact, there have been Teradata sites which extract transactional data from message queues, pre-process them, and store them into different directories based on transaction types, in an “active” manner. By “active”, we mean the files are created as transactions are collected.