50 IBM Content Manager OnDemand Guide
Field Information tab
The Field Information tab (Figure 3-5) is used to define the attributes of the database fields 
that make up the Content Manager OnDemand report index data. These attributes determine 
the characteristics of the index data and control many aspects of loading and processing data 
in the system. A database field must be added for each index value that is required by 
applications to be part of the application group. 
Figure 3-5   Application group’s Field Information tab
When you define a field, you specify the field name, field type, data type, whether it is a 
segment field, the expiration date, and more. In the following sections, we take a closer look 
at field type and whether it is a segment or an application ID field.
Type
The Type attribute determines the manner in which the database field is used by Content 
Manager OnDemand. The main types of attributes are index and filter.
A field needs a type of index if it is used to uniquely identify a document or if it is frequently 
used when a user searches for documents in the application group. Designating a field as an 
index serves to enhance query performance but increases the required processing during 
loading and database maintenance. A separate index table is created and maintained for 
application group fields that are designated as indexes. These index tables are searched first 
when a folder query is run to quickly pinpoint the documents to include in the document “hit” 
list. 
A field needs a type of filter if it does not uniquely identify a document. A filter is used with an 
index field during folder queries. 
Note: Y ou can update the application group to add a database field.