Physical Modeling › Teradata Physical Property Editors › Define Teradata Join Indexes

Define Teradata Join Indexes

You can use the Join Index Editor to join multiple tables, replicate all or a vertical sub-set of a single table, or aggregate one or more columns of a single table or the result of a join in a Teradata physical model.

To define Teradata join indexes

1. Click Join Indexes on the Model menu.

   The Join Index Editor opens.

2. Select a join index and work with the following options:

   Note: Click New on the toolbar to create a new join index.

   Name

   Specifies the name of the join index.

   Database

   Defines the database or user.

   Checksum

   Defines the level of integrity checking for disk I/O. Select from the drop-down list. Valid values are: All, Default, Low, Medium, High, and None.

   Fallback Protection

   Specifies if fallback protection is used for the database. Select from the drop-down.

   Generate

   Generates DDL for this object during Forward Engineering.

3. Work with the other tabs in the editor to access additional design features, for example:
   • Specify the tables and columns to use with the selected join index on the Select tab
   • Choose from a list of available tables to populate the Select tab, on the From tab
   • Specify properties for the where clause for a selected join index on the Where tab
   • View and change a user-defined DDL statement for a selected join index on the User Defined SQL tab
   • View SQL code for a selected join index on the SQL tab
   • Associate permissions with the selected join index on the Permission tab
   • View the history for a selected join index on the History tab
4. (Optional) Click the Comment tab and enter any comments you want associated with the join index.
5. (Optional) Click the UDP tab to work with user-defined properties for the join index.
6. Click Close.

   The Join Index Editor closes.

More information:

Select the Tables and Columns for the View or Join Index

Define a Teradata View Column Expression

Define User Defined SQL Code

View SQL Code for a Physical Object

Add Permissions in a Teradata Property Editor

Add a Comment in a Property Editor

View History in a Property Editor

Add a UDP in a Physical Property Editor