Review these topics to understand Oracle Database terms, tools and processes.

• Definition of Terms Upgrading and Migrating
  Upgrading and migrating are different types of database changes.
• Upgrade and Data Migration Methods and Processes
  Oracle provides features and products to automate the upgrade process, and to assist you with completing upgrades efficiently.
• Oracle Database Releases That Support Direct Upgrade
  Review the supported options for direct upgrades to the latest Oracle Database release.
• Where to Find the Latest Information About Upgrading Oracle Database
  In addition to this document, Oracle provides information about upgrades on its support site, and through its Pre-Upgrade Information Tool.