Understanding BIRT iHub architecture
Actuate BIRT iHub stores metadata containing information about the system and Encyclopedia volume configuration in a relational database management system (RDBMS). In an out-of-the-box (OOTB) installation, Actuate BIRT iHub uses a customized version of the open-source, third-party database, PostgreSQL. iHub also supports using other alternative, third-party database systems, such as DB2, Microsoft SQL Server, Oracle, or a pre-existing PostgreSQL instance.
iHub stores metadata in the following schemas:
System
Contains settings related to iHub configuration, such as servers, templates, volumes, and partitions.
Encyclopedia volume
Contains settings related to volume configuration, such as users, roles, groups, channels, folders, files, and other objects.
In iHub, Actuate provides the following installation options:
Install a new iHub system with a PostgreSQL or other supported, alternative, third‑party database.
Upgrade an existing Actuate iServer installation from a previous release, such as Release 10 Service Pack 1, to Release 11 Service Pack 4, then migrate to iHub using a side-by-side installation operation.
Migrate an existing Release 11 Service Pack 4 installation to iHub using a side‑by-side installation operation.