Canvas
The canvas is a single window that is usually located in the middle of the Data perspective. The canvas is used to display diagrams of your data marts.
You can create and edit data marts by adding and manipulating the graphical objects belonging to the diagram on the canvas.
When a data mart diagram is displayed on the canvas, and the canvas is the active window, the Properties view shows pages that are related to the object that is selected on the canvas.
When the entire data mart is selected (click once on the background of the canvas to do this), the following pages are displayed in the Properties view:
- General
- This page shows the name of the data mart on the canvas, the name
of the associated database, and the estimated size of the data mart.
It also provides buttons to:
- Set the database for the selected data mart (change the source location)
- Deploy the data mart
- Validate the data mart
- Refresh the database cache
- Tables
- This page lists the tables that are used in the data mart and shows their estimated sizes. There are also buttons to add and remove tables from the data mart.
- Validation
- This page shows just the errors in the data mart that is currently displayed on the canvas. The same errors are also listed in the Problems view. The purpose of the Validation page is to isolate the data mart errors, so that you do not need to identify them among all the others in the Problems view.
- Space Required
- This page gives you an estimated size of the data mart that is currently displayed on the canvas. The size displayed is the total estimated compressed size in the combined main memory of all accelerator server nodes. The actual size that is required after loading might differ from the estimate because it depends on the actual column cardinalities and the value frequency distribution.