Understanding the Tables Widget
Describes the Tables chart, which lists the data table names in your data warehouse and how often they are queried.
The Tables widget chart in the Data Warehouse Summary page provides a quick overview of the tables that are predominantly queried in your SQL statements.
The Data Read Distribution column, displays the distribution of data, as a percentage, that was read by the queries. When two or more tables are displayed in a single row, it denotes a join.