Selecting the columns as either "determinant" or "dependent" - 7.1

Talend Data Management Platform Studio User Guide

author
Talend Documentation Team
EnrichVersion
7.1
EnrichProdName
Talend Data Management Platform
task
Design and Development
EnrichPlatform
Talend Studio

Procedure

  1. Expand DB connections, browse to the database you want to analyze, select it and then click Finish to close the New Analysis wizard.
    The analysis editor opens with the defined analysis metadata, and a folder for the newly created analysis is displayed under Analyses in the DQ Repository tree view.
    The Data Preview section shows a sample data of all the table columns.
  2. In the Left Column panel, click A Columns Set to open the Column Selection dialog box.
    Here you can select the first set of columns against which you want to analyze the values in the dependant columns. You can also drag the columns directly from the DQ Repository tree view to the left column panel.
    In this example, you want to evaluate the records present in the city column and those present in the state_province column against each other to see if state names match to the listed city names and vice versa.
  3. In the Column Selection dialog box, expand DB Connections and browse to the column(s) you want to define as determinant columns.
    You can filter the table or column lists by typing the desired text in the Table filter or Column filter fields respectively. The lists will show only the tables/columns that correspond to the text you type in.
  4. Select the check box(es) next to the column(s) you want to analyze and click OK to proceed to the next step.
    The selected column(s) are displayed in the Left Columns panel of the Analyzed Columns Set view. In this example, we select the city column as the determinant column.
  5. Do the same to select the dependant column(s) or drag it/them from the DQ Repository tree view to the Right Columns panel. In this example, we select the state_province column as the dependent column. This relation will show if the state names match to the listed city names.
    If you right-click any of the listed columns in the Analyzed Columns view and select Show in DQ Repository view, the selected column is automatically located under the corresponding connection in the tree view.
  6. Click the Reverse columns tab to automatically reverse the defined columns and thus evaluate the reverse relation, what city names match to the listed state names.
    You can select to connect to a different database by selecting another connection from the Connection list in the Data Preview section. This list shows all the connections created in the Studio. If the columns listed in the Analyzed Columns Set view do not exist in the new database connection you want to set, you will receive a warning message that enables you to continue or cancel the operation.