Data Summarization Viewer

The Data Summarization Viewer displays summary statistics for the selected table or view.

Note: To ensure good performance, all statistics are calculated on a sample of the data. For information about calculating statistics on a sample, see Calculating Statistics.

The viewer displays the Sample Count and Attribute Count for the table or view.

To view the histogram for an attribute, select the attribute and click Histogram; for information about the histogram, see Histogram for Selected Attribute. In order to create a histogram, data must be binned; the default is to create a maximum of 10 bins. To change the number of bins, select one or more attributes, or click Select All to select all attributes, and then click Preferences. For information about preferences, see Specify Preferences for Histogram.

Attributes are summarized in a grid. You can sort the items in the grid by clicking any column header. For all attributes, the grid displays the following:

For attributes with numerical datatypes such as NUMBER or FLOAT, the viewer displays the following additional information:

To close the viewer, click OK.