Keywords Keywords are words that have special meanings. In the syntax diagrams in this guide, keywords appear in uppercase. When you specify them, they can be in uppercase or lowercase, but they must be used exactly as they appear in the syntax diagram.
Parameters Parameters act as place holders in syntax diagrams. They appear in lowercase. Parameters are usually names of schema objects, Oracle datatypes, or expressions. When you see a parameter in a syntax diagram, you should substitute an object or expression of the appropriate type. Note that parameter names appear in italics in the text of this guide.
Graphic Components Syntax diagrams use lines and arrows to show syntactic structure. The following list shows combinations of lines and arrows and their meanings within railroad diagrams:
SELECT * FROM emp
Note that the text of examples appears in a different font than the text of the guide.
Examples in this guide follow these case conventions:
Additional Information: Operating System-Specific Documentation Where necessary, this guide refers you to your operating system-specific Oracle documentation for additional information.
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