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SQL Anywhere 12.0.0 (Français) » MobiLink - Client Administration » Introduction to MobiLink clients » Schema changes in remote clients

 

Schema upgrades for SQL Anywhere remote databases

You can change the schema of remote SQL Anywhere databases after they are deployed.

Note

If you can ensure that there are no other connections to the remote database, you can use the ALTER PUBLICATION statement manually to add new or altered tables to your publications. Otherwise, you must use the sp_hook_dbmlsync_schema_upgrade hook to upgrade your schema.

See sp_hook_dbmlsync_schema_upgrade.

 ♦  To add tables to SQL Anywhere remote databases
  1. Add the associated table scripts in the consolidated database.

    The same script version may be used for the remote database without the new table and the remote database with the new table. However, if the presence of the new table changes how existing tables are synchronized, then you must create a new script version, and create new scripts for all tables being synchronized with the new script version.

  2. Perform a normal synchronization. Ensure that the synchronization is successful before proceeding.

  3. Use the ALTER PUBLICATION statement to add the table. For example,

    ALTER PUBLICATION your_pub
       ADD TABLE table_name;

    You can use this statement inside a sp_hook_dbmlsync_schema_upgrade hook. See sp_hook_dbmlsync_schema_upgrade.

    For more information, see ALTER PUBLICATION statement [MobiLink] [SQL Remote].

  4. Synchronize. Use the new script version, if required.

 Changing table definitions in remote databases