ON | OFF

    Specifies whether or not SQL checks statements that use reserved
    words as identifiers. If you specify SET ANSI IDENTIFIERS ON, SQL
    checks statements for reserved words from the ANSI/ISO standard.
    You must enclose reserved words in double quotation marks to
    supply them as identifiers in SQL statements. If you do not,
    SQL issues an informational message after such statements when
    you enable reserved-word checking. For a list of the reserved
    words deprecated as identifiers, see the Oracle Rdb SQL Reference
    Manual.

    When you specify SET ANSI IDENTIFIERS OFF, SQL does not check
    identifiers. By default, SQL does not check identifiers.