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Note: The DataType attribute specifies the allowable values and the intended use of the corresponding value elements, but not necessarily how systems will store them. The receiver is expected to preserve the value and precision of the data and can use the ODM-specified datatype to determine the best representation of the data in their system.
Note: In ODM v1.3.2 the Length and SignificantDigits attributes were used to express the requirements for the receiving system. In ODM v2.0 the meaning of the Length attribute remains the same for the text and string datatypes, but has been changed for the numeric datatypes and is now optional for all datatypes. The SignificantDigits attribute has been removed. If DataType is text or a string and the Length attribute is provided, Length=N indicates that the receiving system be able to process and store all text string values of length less than or equal to N. All characters are allowed in text string values.
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