Collection Directory-Key Components

Key components in the collection directory include the word list and the documents table, as described below.

Word List

The word list is a list of all words indexed by the Verity engine for a single partition. You can view the contents of the word list using a command-line utility called didump. A word list segment that was output using didump is shown below. 



didump -words /z/colls/collnew/parts/00000003.did



didump - Verity, Inc.



Text                            Size    Doc     Word

A                               10      3       4

a                               34      5       24

abbreviations                   4       1       1

about                           4       1       1

acronym                         5       1       2

acronyms                        4       1       1

actual                          4       1       1

administrator                   3       1       1

advance                         3       1       1

all                             8       2       3

also                            9       2       4

Always                          4       1       1
In the word list segment shown above, you will notice that the word list contains mixed-case entries. The mixed-case entries support case-sensitive queries. You may want to look at the word list to determine why a query returned the results it did.

Documents Table

The documents table includes field definitions for all collection fields in a single partition. A number of fields are defined by default and custom fields can be defined. You can view the documents table using a command-line tool called browse. A documents table segment that was generated using browse is shown below. 



50 Created          FIX-date (  4) = 12-Jan-1998 01:52:27 pm

51 Modified         FIX-date (  4) = 24-Sep-1997 02:40:26 pm

52 Size             FIX-unsg (  4) = 5381

53 DOC_OF           FIX-unsg (  4) = 0

54 DOC_SZ           FIX-unsg (  4) = 4294967295

55 DOC_FN_OF        FIX-unsg (  4) = 436

56 DOC_FN_SZ        FIX-unsg (  2) = 58

57 _CACHE_FN_OF     FIX-unsg (  4) = 2922

58 _CACHE_FN_SZ     FIX-unsg (  2) = 0

59 _ParentID_OF     FIX-unsg (  4) = 354

60 _ParentID_SZ     FIX-unsg (  2) = 46

61 Title_OF         FIX-unsg (  4) = 2481

62 Title_SZ         FIX-unsg (  2) = 15

Special Internal Fields

Field Name
Description
VdkVgwKey
The document key used by the to manage the document. If the document is accessed through the file system, the primary key is a path name. If the document is accessed through a web server, using HTTP, the primary key is a URL.
Score
The score assigned to each retrieved document, based on its relevance to the query. Valid value for the score field is an integer between 0.000 and 1.000. Because the score field is populated during search processing, this field is blank when you view the documents table using a tool like browse. This field can be viewed in a results template.



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