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


  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.
    Overview of the Analyzed Columns Set section.
    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 dependent 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.
    Overview of the Column Selection window.
  3. In the Column Selection dialog box, expand DB Connections and browse to the columns 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 next to the columns you want to analyze and click OK to proceed to the next step.
    The selected columns are displayed in the Left Columns panel of the Analyzed Columns Set view. In this example, select the city column as the determinant column.
    Overview of the Left Columns and Right Columns sections.
  5. Do the same to select the dependent columns or drag them from the DQ Repository tree view to the Right Columns panel. In this example, 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 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 Talend 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.

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