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  1. Preface
  2. Introduction to Teradata Connector
  3. Connections for Teradata
  4. Teradata sources and targets
  5. Mappings and Mapping Tasks with Teradata
  6. Teradata ODBC SQL ELT optimization
  7. Data Type Reference

Teradata Connector

Teradata Connector

Configuring cross-schema SQL ELT optimization for a Teradata ODBC mapping

Configuring cross-schema
SQL ELT optimization
for a Teradata ODBC mapping

You can use cross-schema
SQL ELT optimization
for a mapping to read or write data based on different schemas within the same database.
To configure cross-schema
SQL ELT optimization
for a Teradata ODBC
mapping
task, perform the following steps:
  1. Create Teradata ODBC source and target connections, each defined with a different schema.
    For example,
    • Create a
      teradata_odbc1
      Teradata ODBC connection and specify the
      TERADATA_SCHEMA1
      schema in the connection properties.
    • Create a
      teradata_odbc2
      Teradata ODBC connection and specify the
      TERADATA_SCHEMA2
      schema in the connection properties.
  2. Create a Teradata ODBC mapping.
    For example, create a
    m_teradata_pdo_crossSchema
    Teradata ODBC mapping.
  3. Add a Source transformation and include a Teradata object and connection to read data using the schema specified in the connection.
    For example, add a Source transformation and include a Teradata source object and connection
    teradata_odbc1
    to read data using
    TERADATA_SCHEMA1
    .
  4. Add a Target transformation and include a Teradata target object and connection to write data using the schema specified in the connection.
    For example, add a Target transformation and include a Teradata target object and connection
    teradata_odbc2
    to write data using
    TERADATA_SCHEMA2
    .
  5. Create a Teradata ODBC
    mapping
    task, and perform the following tasks:
    1. Select the configured Teradata ODBC mapping.
      For example, select the
      m_teradata_pdo_crossSchema
      Teradata ODBC mapping.
    2. In the
      SQL ELT Optimization
      section on the
      Runtime Options
      tab, set the
      SQL ELT optimization
      value to
      Full
      .
    3. In the
      Advanced Session Properties
      section, select the
      Enable cross-schema SQL ELT optimization
      check box.
    4. Save the task, and click
      Finish
      .
    When you run the
    mapping
    task, the Secure Agent reads data from the Teradata source object associated with the
    TERADATA_SCHEMA1
    schema and writes data to the Teradata target object associated with the
    TERADATA_SCHEMA2
    schema.

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