Figure 6.
For each semantic language, the chart indicates which view definition functionality is and is not supported. Instances of “*” indicate that there is partial support, as explained in the text.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.