Definition

In the following meta-data classes, the following information shall be provided. In the case of string fields, the strings may not be empty.

CLASS	MANDATORY FIELDS
<Access>	security's classification shall be a non-empty string
<Browse Media>	name shall be a non-empty string media_urn shall be a non-empty string in the form of a valid URN
<Citation>	title shall be a non-empty string originators shall be a non-empty string
<Description>	abstract shall be a non-empty string
<Keywords>	keyword_array shall be non-NULL For each entry in keyword_array, the thesaurus shall be a non-empty string. To indicate that no thesaurus is applicable, the thesaurus field shall have the value "NONE". For each entry in keyword_array, the keyword_list shall be a non-empty string, where keywords are separated by semicolons. For any two entries in keyword_array, either the code fields or the thesaurus fields shall have different values.
<Point Of Contact>	person_or_position shall be a non-empty string organization shall be a non-empty string address shall be a non-empty string voice_phone shall be a non-empty string email_address, if provided, shall be a comma-separated list of syntactically valid e-mail addresses web_site, if specified, shall be a comma-separated list of syntactically valid URLs
<Process>	description shall be a non-empty string
<Source>	description shall be a non-empty string

Rationale

This is consistent with the [CSDGM] metadata standard which requires these fields and the ISO/DIS 19115 Metadata Standard which allows for these fields.

Example

1. For <Point Of Contact>, web_site = SE_STRING_DEFAULT is valid, and web_site = { SE_LOCALE_DEFAULT, 21, "http://www.sedris.org" } is valid, but web_site = { SE_LOCALE_DEFAULT, 3, "N/A" } is not.

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