The REAL data type is an approximate numeric data type and subject to rounding errors after arithmetic operations. The approximate
nature of REAL values means that queries using equalities should generally be avoided when comparing REAL values.
REAL values require 4 bytes of storage.
The range of values is -3.402823e+38 to 3.402823e+38, with numbers close to zero as small as 1.175494351e-38. Values held
as REAL are accurate to 7 significant digits, but may be subject to rounding error beyond the sixth digit.