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Creating IMS tables and views for change capture

To capture changes from an IMS™ database, you must create a relational table that maps to that database. You can also create a view on the table to filter record types or to filter rows and columns.

Before you begin

Restrictions

About this task

For more information about creating tables and views that map to IMS databases, see the related links for IMS syntax diagrams and for views.

Procedure

To create an IMS table and optionally a view for change capture:

  1. Map your IMS database to a relational table and optionally create a view by using the New IMS Table wizard.
    1. Open this wizard by right-clicking either the database in your data design project or one of the schemas within the database. Select Add Classic Object > IMS table.
    2. Select the DBD file to base the table on.
    3. Specify that the table is for change capture.
    4. Choose whether to create a view on the table.
    5. Provide information about how to access the IMS database.
    6. For the each segment that is in the path, specify a COBOL copybook, select the desired 01 level if there is more than one, and select the elements that you want to map as columns.
    7. If you are creating a view, specify the criteria for the WHERE clause.
    When you finish the wizard, the new table appears under the selected schema. If you created a view, it also appears under the selected schema.
  2. Optional: Modify the table properties or add privileges. Select the table and make any changes in the Properties view.
  3. Optional: Generate the DDL for the table. You can generate the DDL later. You can also generate the DDL for all of the objects within the same schema. See Generating DDL.
    1. Right-click the table and select Generate DDL.
    2. In the Generate DDL wizard, follow these steps:
      1. Choose to generate CREATE statements.
      2. Choose to generate DDL for tables.
      3. Name the file in which to save the DDL within your project.
      4. Choose whether to run the DDL on a data server. After you run the DDL, check the Data Output view to determine whether the DDL ran successfully.
      5. Choose whether to open the DDL for editing.
  4. Optional: If you ran the DDL successfully on a data server, validate the table by running a test query against your IMS database. Be sure that the data server is connected to that database.
    1. In the Database Explorer, search your data server for the schema that you created the table in. Expand the schema and expand the Tables folder.
    2. Right-click the table and select Data > Sample Contents.
    3. Check the Data Output view to determine whether the test query ran successfully.
  5. Optional: If you created a view, generate the DDL for the view. You can generate the DDL later. You can also generate the DDL for all of the objects within the same schema. See Generating DDL.
    1. Right-click the view and select Generate DDL.
    2. In the Generate DDL wizard, follow these steps:
      1. Choose to generate CREATE and ALTER statements.
      2. Choose to generate DDL for views.
      3. Name the file in which to save the DDL within your project.
      4. Choose whether to run the DDL on a data server. After running the DDL, check the Data Output view to determine whether the DDL ran successfully.
      5. Choose whether to open the DDL for editing.
  6. Optional: If you ran the DDL successfully on a data server, validate the view by running a test query against your IMS database. Ensure that the data server is connected to that database.
    1. In the Database Explorer, search your data server for the schema that you created the view in. Expand the schema and expand the Views folder.
    2. Right-click the view and select Data > Sample Contents.
    3. Check the Data Output view to determine whether the test query ran successfully.
Related concepts
Mapping data for change capture
Creating views on existing tables
Related tasks
Creating Adabas tables and views for change capture
Creating CA-IDMS tables and views for change capture
Creating CICS VSAM tables and views for change capture
Creating native VSAM tables and views for change capture
Altering tables to support change capture
Altering views to support change capture
Related information
Views


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Update icon Last updated: 2006-12-15