A keyword is a fixed character string that specifies a function, such as the name of an SQL statement (e.g., SELECT or UPDATE). Because most keywords are registered as system-reserved words, they can be specified by users only at prescribed positions in a command.
However, keywords that are not registered as reserved words can be used as names.
Following is an example of keywords (for a list of the reserved words, see A. Reserved Words):
CREATE TABLE ID. T1 (C1 CHAR, C2 INTEGER)
Keyword Keyword Keyword Keyword