(C) IBM Corp. 2000
DB2 Net Search Extender Administration and User's Guide
These are the parameters of the document model elements:
- name
- You assign a name to the text field or document attribute for each
definition. The names enable you to restrict a search query to the
content of a specific text field or document attribute. Using the above
examples, you could search for documents containing the word
structure in the text field named Abstract.
- start
- A boundary string in code page UTF-8 that marks the beginning of the text
field or document attribute. There are no rules for specifying boundary
strings; they can be any arbitrary UTF-8 string. Here are some
examples: start="introduction:", start="note!",
start="$$...".
Nonprintable characters and the special XML characters "<" and "&"
must be specified using the standard XML escape character ("<" for
"<", and "&" for "&").
- end
- Optional. A boundary string in code page UTF-8 that marks the end
of the text field or document attribute. If you do not specify an end
tag, the next found start tag is assumed to be the end of the field. If
no subsequent start tag is found, the field extends to the end of the
document, and no further fields are identified.
- type
- The type of document attribute must always be "NUMBER". The
parameter does not apply to field definitions.
- exclude
- YES or NO. A parameter that determines whether the text in a field
should be excluded and not indexed. This parameter does not apply to
attribute definitions. In the example, the field definition "head"
would be excluded, but definition "abstract" included.
Restrictions:
- There must not be two field definitions or attribute definitions having
the same start tag. However, a field definition and attribute
definition may have the same start tag and end tags.
- A start tag must not be a proper prefix of another. For example,
you cannot have a start tag "author" and a start tag "authority".
- Start tags and end tags must not be empty strings.
For information on the Document Type Definitions, see DTD for document models.
For additional restrictions, see Limitations for text fields and document attributes.
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