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Data Profiling provides data characteristics for the columns in a synonym. You can display the characteristics for all the columns in a synonym or segment, or for an individual column.
For alphanumeric columns, Data Profiling provides the segment, format, count of distinct values, total count, patterns count, maximum, minimum, and average length, minimum and maximum values, and number of nulls. Patterns count shows the number of patterns found in each alphanumeric column.
For numeric columns, Data Profiling provides the segment, format, count of distinct values, total count, maximum, minimum, and average values, and number of nulls.
Data Profiling for an individual column provides access to Statistics, Patterns, Values, and Outliers reports.
How to: |
Data Profiling provides information on all the columns in a synonym or segment. You can also drill down to the Values or Patterns reports for an individual column from a synonym or segment Data Profiling report.
To view the Data Profiling information for a synonym or segment:
By default, the Synonym Editor opens to the last view used.
The Data Profiling information displays in the workspace. The last four columns are shown below the rest of the information for illustrative purposes only. The actual report runs across the workspace.
You may use the Data Profiling Results toolbar to view server messages, print the report, copy data as text, and export the report.
This is a partial Values report produced by clicking a column name.
For pattern analysis, a 9 represents a digit, an A represents any uppercase letter, and an a represents any lowercase letter. All printable special characters are represented by themselves and unprintable characters are represented by an X.
How to: |
Data Profiling can be done for all the columns in a synonym or segment (press the Shift or CTRL key while selecting multiple columns), or for an individual column. Data Profiling for an individual column provides access to the following reports:
For alphanumeric columns, the Statistics report provides the segment, format, count of distinct values, total count, patterns count, maximum, minimum, and average length, minimum and maximum values, and number of nulls.
For numeric columns, the Statistics report provides the segment, format, count of distinct values, total count, maximum, minimum, and average values, and number of nulls.
These reports are available by right-clicking a column in the Synonym Editor and selecting Data Profiling.
To view the Statistical Data Profiling information for a single column:
By default, the Synonym Editor opens to the last view used.
The Statistical Data Profiling information opens in the workspace, as shown in the following image.
Data Profile Patterns shows patterns of letters, digits, and special characters, as well as counts. This is only available for alphanumeric columns.
To view the Patterns Data Profiling information for a single column:
By default, the Synonym Editor opens to the last view used.
The Patterns Data Profiling information displays, as shown in the following image.
For pattern analysis, a 9 represents a digit, an A represents any uppercase letter, and an a represents any lowercase letter. All printable special characters are represented by themselves and unprintable characters are represented by an X.
Data Profile Values shows unique values.
To view the Values Data Profiling information for a single column:
By default, the Synonym Editor opens to the last view used.
The Values Data Profiling information displays, as shown in the following image.
The Data Profile Values Graph displays values as a bar graph.
To view the Values Graph Data Profiling information for a single column:
By default, the Synonym Editor opens to the last view used.
The Values Graph Data Profiling information displays, as shown in the following image.
The Data Profile Values Pie Graph displays values as a pie graph.
To view the Values Pie Graph Data Profiling information for a single column:
By default, the Synonym Editor opens to the last view used.
The Values Pie Graph Data Profiling information displays, as shown in the following image.
Data Profile Duplicate Values shows identical values.
To view the Duplicate Values Data Profiling information for a single column:
The Duplicate Values Data Profiling information displays, as shown in the following image.
Data Profile Outliers shows the ten highest and ten lowest distinct values.
To view the Outliers Data Profiling information for a single column:
By default, the Synonym Editor opens to the last view used.
The Outliers Data Profiling information displays, as shown in the following image.
Note: Outliers produce a maximum of the ten highest and ten lowest distinct values, if they exist.
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