Working with Denormalized Data

Your data source tables might include columns with denormalized data. That is, a table column might include multiple values separated by a delimiter character. By default during relationship discovery, Discovery compares the entire string in a column as a single value. So if a column contains comma-separated values, the individual values would not be compared during relationship discovery. However, you can configure Discovery to compare individual values within a denormalized table column during relationship discovery.

To configure relationship discovery for denormalized data

1.

In the Studio resource tree, open the data source table that contains denormalized data.

See Table Statistics Displayed for Relationship Discovery, for a display of table statistics included with Discovery.

2.

For the column that contains denormalized data, type the delimiter that separates the data values in the Denormalization column (the right column in the table).

Delimiters can be any character of your choice. Typical characters are comma, semicolon, colon, space, or tab. To enter a space, type \s. To enter a tab, type \t.

3.

The table must be reindexed and rediscovered to see the results with denormalized data.

Discovery lets you know if a relationship is based on denormalized data. See Viewing Relationship Details, for more information.