Some SQL reserved words (such as BETWEEN or LIKE) are allowed in queries and are expected to occur. An SQL reserved word cannot be used as an attribute name unless it is enclosed in double quotes (for example, "FIRST"). Some other SQL reserved words (such as SELECT or CREATE) are forbidden from occurring unquoted in queries. Any query containing these words unquoted will immediately return an error. These forbidden words can be used as attribute names by enclosing them in double quotes.