Literals

Literals are fixed data values.

The terms literal and constant value are synonymous and refer to a fixed data value. For example, 'STOCK', 'SUDDEN ALERT', and '512' are all string literals; 1024 is a numeric literal. String literals are enclosed in single or double quotation marks to distinguish them from object names.

Neither BLOB nor XML data types have literals.

• Boolean Literals
  Boolean literals are True and False statements which are not sensitive to case.
• String Literals
  String literals appear as a part of expressions. Provide commands for String literals.
• Numeric Literals
  Numeric literals are used to specify integers and floating-point numbers.
• Time Literals
  Time literals are used to specify timestamps and intervals.