The Pega 7 Platform supports a split schema database architecture. The split separates rules and data into separate schemas and is essential for enabling minimal to zero down time during Pega 7 Platform application and strategic application upgrades or patch installation.
The use of split schema architecture enables Pega 7 Platform System Administrators to install and upgrade a new rules schema in the production database while the old schema is still in use. Pega 7 Platform high availability features can then be used to migrate users from the old rule schema to the new schema on the production system to complete the upgrade.