FME Data Types

FME supports the following data types. FME uses these data types when Mapping Attributes from Reader to Writer.

Type	Description	Range (if applicable)	fme_data_type
binary(width)	Binary stores fixed-length binary data. Width defines the size, in bytes.		fme_binary(width)
binarybuffer	Binary buffer stores unbounded (of any size) binary data.		fme_binarybuffer
buffer	Buffer stores unbounded (of any length) character strings.		fme_buffer
char(width)	Character stores fixed-length string data. Width defines the maximum number of characters that can be stored. No padding is required for strings shorter than this width - they may be of any length up to the defined width.		fme_char(width)
date	Date store dates as character strings with the format YYYYMMDD. See Standard FME Date/Time Format.		fme_date
datetime	Date/Time stores dates as character strings with the format [Date][Time], as in: YYYYMMDDHHMMSS.FFF The [Time] component may be formatted with or without fractional seconds, and with or without a UTC offset. See Standard FME Date/Time Format.		fme_datetime
int16	Integer, 16-bit stores signed integers in 2 bytes (16 bits) of space.	-32768 to 32767	fme_int16
int32	Integer, 32-bit stores signed integers in 4 bytes (32 bits) of space.	-2147483648 to 2147483647	fme_int32
int64	Integer, 64-bit stores signed integers in 8 bytes (64 bits) of space.	-9,223,372,036,854,775,808 to 9,223,372,036,854,775,807	fme_int64
int8	Integer, 8-bit stores signed integers in 1 byte (8 bits) of space.	-128 to 127	fme_int8
json	JSON stores unbounded strings formatted in JSON (JavaScript Object Notation).		fme_json
logical	Logical stores TRUE/FALSE data, which may be any of: An integer value of 1 (true) or 0 (false) Any string that begins with "t" or "y" (true), or "f" or "n" (false), or NULL.		fme_boolean
number(width, precision)	Number stores single and double precision floating point values. Width is the total number of characters allocated to the field, including the decimal point. Precision controls the precision of the data and is the number of digits to the right of the decimal.		fme_decimal(width,decimal)
real32	Real32 stores floating-point numeric data that occupies 4 bytes (32 bits) in standard IEEE floating-point format. There is no ability to specify the precision and width of the field.	3.4E +/- 38 (7 digits)	fme_real32
real64	Real64 stores floating-point numeric data that occupies 8 bytes (64 bits) in standard IEEE floating-point format. There is no ability to specify the precision and width of the field.	1.7E +/- 308 (15 digits)	fme_real64
time	Time store times as character strings with the basic format YYYYMMDDHHMMSS.FFF They may be formatted with or without fractional seconds, and with or without a UTC offset. See Standard FME Date/Time Format.		fme_time
uint16	Unsigned integer, 16-bit stores integers greater than or equal to 0 in 2 bytes (16 bits) of space.	0 to 65535	fme_uint16
uint32	Unsigned integer, 32-bit stores integers greater than or equal to 0 in 4 bytes (32 bits) of space.	0 to 4294967295	fme_uint32
uint64	Unsigned integer, 64-bit stores integers greater than or equal to 0 in 8 bytes (64 bits) of space.	0 to 18,446,744,073,709,551,616	fme_uint64
uint8	Unsigned integer, 16-bit stores integers greater than or equal to 0 in 1 byte (8 bits) of space.	0 to 255	fme_uint8
varbinary(width)	Variable-length binary data. Width defines the maximum size, in bytes.		fme_varbinary(width)
varchar(width)	Variable character fields store variable length strings. Width controls the maximum number of characters that can be stored by the field. These are often used to optimize storage.		fme_varchar(width)
xml	XML stores unbounded strings formatted as XML (Extensible Markup Language).		fme_xml