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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.
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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.
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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.
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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.
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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.
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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.
The Data Preview section shows a sample data of all the table columns.
