상수

<literal>

<string literal>
| <number literal>
| <date literal>
| <time literal>
| <monetary literal>
| <set literal>
| USER
| NULL

<string literal>

"문자 스트링 데이터 타입"을 참조한다.

<number literal>

<exact number literal>
| <approx number literal>

<exact number liter>

[ + | - ] <unsigned real literal>

<unsigned real literal>

<unsigned integer literal> [.<unsigned integer literal> ]
| <unsigned integer literal>
| <unsigned integer literal>

<approx number literal>

<exact number literal> [E|e] <integer literal>

<integer literal>

[ + | - ] <unsigned integer literal>

<unsigned integer literal>

One or more decimal digits.

<data literal>

<string literal> of form mm/dd/[yyyy].

<time literal>

<string literal> of form 'hh[:mm[:ss] ] [ampm]'.

<monetary literal>

$<unsigned real literal>

<set literal>

[<set specifier> {[value specification comma list>]}