Creating, Modifying, and Deleting tables

An interval data “table” stores interval data in a spreadsheet, where each interval is stored as a separated row.  Since every interval row in the table shares the same fields (as columns), it’s a good idea to keep different types of data in different tables.  To create, modify, or delete tables in a Petra project, select the “Maintenance” button on the bottom of the Interval tab on the Main Module.

- This option adds a new interval data table.  Selecting this option brings up a dialogue box to add the new table’s name and description.  A newly created table contains no new fields.

- This option edits just the name and description of an existing interval data table.  To edit the fields inside the interval, select the “Data Fields” option on the Maintenance screen.

- This option deletes the entire interval data table, along with all the fields and data contained within the table.