Defining Informix Table Indexes

The following properties are applicable to an Informix Table Index object.

Tab

Property

Description

Additional Information
  Physical Name Specifies the name of the index  
  Type Specifies the index type of the table

 
  Is Unique Specifies whether to allow only unique values in the table index Unavailable when a primary or foreign key index is selected
  Physical Only Specifies whether the index appear in a physical model only Unavailable when a primary or foreign key index is selected
  Generate Specifies whether a DDL statement is generated for the index during forward engineering  
  Show FK Indexes Specifies whether foreign key indexes appear in the index members list  
Members Column Specifies the columns that are included in the index  
Sort Order Specifies the order in which index values are stored

Ascending: Indicates that the index values are sorted in ascending order

Descending: Indicates that the index values are sorted in descending order

Random: Indicates that the index values are sorted in random order
General Clustered Specifies whether the index is clustered or non-clustered  
Owner Specifies the owner of the index  
Storage Option Specifies the storage distribution scheme for the index

DB Space: Indicates that the index is stored in a DBSpace

Frag by Expression:Indicates that the index is fragmented by expression and stored across multiple storage spaces
IN_DBSPACE Specifies the DBSpace in which the index is stored

 
REMAINDER_IN Specifies the DBSpace in which the remainder fragment is stored  
Partitions Name Specifies the names of the table index partitions  
Expression Specifies a SQL expression to define the partition  
IN_DBSPACE Specifies the DBSpace in which the partition is stored