New Features and Enhancements for 8.1.6

This section lists all the new features and enhancements to interMedia Text, release 8.1.6.

See Also: For more information about each new feature, see Oracle8i interMedia Text Reference

Datastore Improvements

• New NESTED_DATASTORE.You can index the rows of a nested table.

• USER_DATASTORE enhanced to let you to define output type for user procedure.

Filter Improvements

• You can optionally specify a document FORMAT column with CREATE INDEX. Defining document format on a per-row level is useful for indexing mixed-format text tables as you can selectively filter binary documents and bypass filtering for text and HTML documents.

• You can optionally specify a character set (CHARSET) column with CREATE INDEX. Defining document character-set on a per-row level is useful for indexing mixed character-set text tables.

Section Searching Improvements

• BASIC_SECTION_GROUP enhanced to parse tags with attributes.

• HTM_SECTION_GROUP enhanced to index META tag NAME and CONTENT attributes.

• XML_SECTION_GROUP enhanced to support defining sections with a document type limiter.

• XML_SECTION_GROUP enhanced to support defining and indexing of attribute sections.

• New AUTO_SECTION_GROUP. You can use this section group to automatically index XML sections and attributes.

• You can add sections dynamically after indexing with ALTER INDEX.

Lexer Improvements

• New MULTI_LEXER allows you to index multi-language text tables, such as a table that contains English, French, and Japanese documents.

• No limit on number of themes generated per document.

• Japanese and Korean lexers enhanced to support UTF-8.

Wordlist and Storage Improvements

• BASIC_WORDLIST enhanced with new attribute for automatic language detection for fuzzy matching and word stemming.

• BASIC_WORDLIST enhanced with WILDCARD_MAXTERMS attribute which you can use to set term expansion limit.

• BASIC_WORDLIST enhanced with new SUBSTRING_INDEX boolean attribute you can enable to improve performance of double-truncated queries.

• BASIC_STORAGE enhanced with new P_TABLE_CLAUSE storage clause for substring index creation.

Document Services Improvements

• CTX_DOC procedures enhanced to allow you to identify documents by rowid in addition to primary key when you use procedures such as CTX_DOC.HIGHLIGHT and CTX_DOC.GIST.

• CTX_DOC procedures enhanced to allow optional in-memory result storage for faster response time.

Thesaurus Improvements

• The following new procedures have been added to the CTX_THES PL/SQL package:
  • ALTER_THESAURUS

  • ALTER_PHRASE

  • CREATE_RELATION

  • DROP_PHRASE

  • DROP_RELATION

  • SN

  • THES_TT

• All CTX_THES expansion functions and procedures support storing output expansions to a table.

Indexing and Query Improvements

• ALTER INDEX enhanced with parallel indexing clause to allow you to specify parallel degree.

• Index synchronize and optimize functionality added to PL/SQL interface CTX_DDL. This package has the following new functions:
  • CTX_DDL.SYNC_INDEX

  • CTX_DDL.OPTIMIZE_INDEX

• CTX_QUERY.BROWSE_WORDS new procedure lets you browse the index.

• ACCUM operator uses new scoring algorithm to correctly rank weighted operands.

• WITHIN operator enhanced to support hierarchical section searching, that is, querying sections within sections using a nested WITHIN clause.