The National Archives | NDAD | Field details: CNUMB (CRDA/17/DS/1/1/2)

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Field name:

CNUMB

Data type:

Variable Length String

Original description:

Key to Counties

Further descriptive information:

County number

This is the key to the file. {Maximum length 3}

Missing value(s):

[not permitted for this field]

Attributes:

This field forms a 1 - Many relationship with the following tables:

From CRDA/17/DS/1/1	to BATDATA (CRDA/17/DS/1/1/1) via the field COUNTY_CODE
	to VCOUNTY (CRDA/17/DS/1/1/9) via the field COUNTY

Constraints:

This field may take any value appropriate to its datatype.

Encoding:

[No encoding used]

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Field details: CRDA/17/DS/1/1/2:1