C - 89数据类型(包括有符号和无符号)short、int、long、long long、float和double。
C-89 data types (include signed and unsigned) short, int, long, long long, float, and double.
无标记数据:由于在读取数据时有模式定义，这就大大减少了数据编辑所需的类型信息，从而减少序列化空间。
Untagged data: Since the schema is present when data is read, considerably less type information need be encoded with data, resulting in smaller serialization size.
EXI引入了数据类型，比如二进制、布尔值、小数、浮点数、整数、无符号整数，以及日期-时间。
EXI introduces data types such as Binary, Boolean, Decimal, Float, Integer, Unsigned Integer, and Date-Time.
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