# Numeric type overview

Numeric types include the following types, which provide storage of varying sizes.

- Integer numerics
  - SMALLINT (2 bytes)
  - INTEGER (4 bytes)
  - BIGINT (8 bytes)
- Approximate or floating-point numerics
  - REAL (4 bytes)
  - DOUBLE PRECISION (8 bytes)
  - FLOAT (an alias for DOUBLE PRECISION or REAL)
- Exact numeric
  - DECIMAL (storage based on precision)
  - NUMERIC (an alias for DECIMAL)

Parent topic: Numeric types
Related reference
Numeric type promotion in expressions
Storing values of one numeric data type in columns of another numeric data type
Scale for decimal arithmetic