A primary key (PK) and a foreign key (IF) index is automatically created for each table in your model, based on the primary key and foreign key columns. If you designate columns as an alternate key group (AK) or inversion entry group (IE), the equivalent unique (AK) and non-unique (IE) indexes are also generated.
Use the Index editor to create alternate key (unique) and inversion entry (non-unique) indexes for tables in your model. After you create an index, you can use the Index editor to modify its properties, such as the index name, column members, physical properties, user-defined properties, and comments.
To define a DB2 z/OS Index
The Table Index Editor opens.
Note: Click New 
on the toolbar to create an index. Use the Enter filter text text box to filter a very large list of indexes to locate the one you want to work with.
Displays foreign key indexes in the Index list.
Specifies the name of the index.
Specifies the default schema for the index.
Shows the key group type. This is a read-only field.
Specifies that the fields defined in the index must be unique.
Specifies that a table cannot have two or more rows with the same value of the index key; this applies when you select the Is Unique check box.
Lets you select whether the index should be suppressed from a logical model and appear in a physical model only.
Specifies whether or not to generate DDL for this object during Forward Engineering.
Specifies whether or not to enforce the Is Unique option as a constraint while generating the index.
Specifies the columns that you want to include in the index.
Specifies the order in which you want to sort the index columns. Select from the drop-down list; valid values are Ascending, Descending, and Random.
Specifies a key-expression that returns a scalar value. You cannot include the same expression more than once in an index. This field is enabled only when you create a non-unique index. For more information about including key expressions in indexes, see the IBM DB2 for z/OS documentation.
Displays the Column Editor for DB2 for z/OS so that you can edit the selected column.
Displays the Reset Order dialog where you can select the reset option you want to use.
Specifies the constraint associated with the index.
Specifies whether the index is clustered or nonclustered.
Specified whether or not the index is data partitioned.
Specifies the index type. Valid values are Type2, Data Partitioned, and Partitioning.
Specifies that varying-length string columns within the index are always padded with the default pad character to their maximum length. Clear the check box to indicate NOT PADDED.
Specifies that the data sets are created when the index is created. Clear the check box to set the DEFINE parameter to NO.
Identifies the buffer pool to use for the index.
Specifies that the index is eligible for closing. The CLOSE parameter specifies whether or not the data set is eligible to be closed when the index is not being used and the limit on the number of open data sets is reached. Select from the drop-down list.
Specifies whether or not to build the index during the execution of the CREATE INDEX statement. Default is No, which means the index is built.
Specifies the maximum addressability of each data set for a secondary index. Enter a valid integer (see your DB2 z/OS documentation for specific information on valid integers).
Indicates that the COPY utility is allowed for the index.
Specifies that the index will use index compression. Clear the check box to set the parameter to COMPRESS NO.
Specifies that the first data set of the index is managed by the user. Catalog Name identifies the linear VSAM data sets that are cataloged in an integrated catalog facility catalog.
Specifies that DB2 manages the data set.
Specifies the minimum primary space allocated to a DB2-managed data set. If you do not specify any value, DB2 uses a default value.
Specifies the minimum secondary space allocated to a DB2-managed data set. If you do not specify any value, DB2 uses a formula to calculate the value. For more information, refer to IBM DB2 for z/OS documentation.
Specifies whether or not to delete the DB2-managed data sets when the index is dropped while executing a utility or an SQL statement.
Specifies the frequency at which you want to leave a page of free space when you create index entries while executing a DB2 utility or when you create an index for a table with existing rows.
Specifies the percentage of free space you want to leave in each nonleaf page and leaf page when you add entries to an index or index partition while executing a DB2 utility or when you create an index for a table with existing rows.
Specifies the index pages that are written to the group buffer pool and applies to the data sharing environment. Select from the drop-down list; valid values are: Changed, All, and None.
Specifies a name for the partition.
Specifies the highest value of the sorting sequences of index columns in a single partition of a partitioning index.
The DB2 for z/OS Table Index Editor closes.
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