WEBSPHERE DATASTAGE DESIGNER CLIENT GUIDE PDF

Job sequences Table definitions You can import, create, and edit table definitions from many sources for example, one source of table definitions is metadata from IBM InfoSphere Information Analyzer. When you edit or view a table, the Table Definitions window opens, as Figure 1 shows. Figure 1. Table Definitions window This window has the following pages: General Contains data source and description information. Columns Contains information about the columns including key values, SQL type, and length.

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Each stage describes a particular process, this might be accessing a database or transforming data in some way. For example, one stage might extract data from a data source, while another transforms it.

Stages are added to a job and linked together using the Designer. The following diagram represents one of the simplest jobs you could have: a data source, a Transformer conversion stage, and the final database. The links between the stages represent the flow of data into or out of a stage.

In a parallel job each stage would correspond to a process. You can have multiple instances of each process to run on the available processors in your system. You must specify the data you want at each stage, and how it is handled.

For example, do you want all the columns in the source data, or only a select few? Are you going to rename any of the columns? How are they going to be transformed? You specify the design as if it was sequential, WebSphere DataStage determines how the stages will become processes and how many instances of these will actually be run.

WebSphere DataStage also allows you to store reusable components in the Repository which can be incorporated into different job designs. You can also import meta data directly from data sources and data targets.

Chapter 4 onwards of this manual describe the individual stage editors that you might use when developing parallel jobs.

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WEBSPHERE DATASTAGE DESIGNER CLIENT GUIDE PDF

Malrajas Installation Files For installing and configuring Infosphere Datastage, you must have following files in your setup. The director log, gives details about the job providing you the log file of the job. A Data Lake is a storage repository that can store large amount of structured, Hash files are views of specific EPM warehouse tables and contain only a subset of the data available in the warehouse tables. In the case of failure, the bookmark information is wwbsphere as restart point.

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WebSphere DataStage parallel jobs

Each stage describes a particular process, this might be accessing a database or transforming data in some way. For example, one stage might extract data from a data source, while another transforms it. Stages are added to a job and linked together using the Designer. The following diagram represents one of the simplest jobs you could have: a data source, a Transformer conversion stage, and the final database. The links between the stages represent the flow of data into or out of a stage. In a parallel job each stage would correspond to a process.

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