Decimal

A fixed point signed decimal number with 64 bits to the left of the decimal point and 19 decimal digits of precision after the point.

Storage representation

A decimal number is stored as a 64-bit signed integer part, and an unsigned 19-digit fractional part. As a consequence, the range of values for decimal is from −2⁶³ to 2⁶³ − 10⁻¹⁹ (inclusive).

Defining a decimal valued attribute

define
  attribute account-balance value decimal;

Inserting a decimal valued attribute

insert
  $_ isa account-balance 0.02dec;