Data tables provide storage for data collected by the subagent.
The specific objects contained in data tables vary from subagent to subagent. Each row in a data table has a one-to-one correspondence to a control row, which exclusively owns the data row. Data rows are indexed through the control row's index.
If the subagent collects data periodically, each new data sample overwrites the existing data in the data table. The interval at which new data is collected is usually controlled by a SampleInterval control table object or a subagent inivar.