Tuesday, December 21, 2010

Data Transformations

Posted by Venkat ♥ Duvvuri 7:49 AM, under | No comments

Data transformation and movement is the process by which source data is selected, converted, and mapped to the format required by targeted systems. The process manipulates data to bring it into compliance with business, domain, and integrity rules and with other data in the target environment. Transformation can take some of the following forms: Aggregation Consolidating or summarizing data values into a single value. Collecting daily sales data to be aggregated to the weekly level is a common example of aggregation. Basic conversion Ensuring...

Tuesday, December 7, 2010

DataStage Stages and Jobs

Posted by Venkat ♥ Duvvuri 9:48 PM, under | 1 comment

An IBM InfoSphere DataStage job consists of individual stages linked together which describe the flow of data from a data source to a data target. A stage usually has at least one data input and/or one data output. However, some stages can accept more than one data input, and output to more than one stage. Each stage has a set of predefined and editable properties that tell it how to perform or process data. Properties might include the file name...

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