Replicated database sets

A database set consists of a schema repository and its associated user databases. A user database cannot exist without its corresponding schema repository, so when you replicate a database set, both the schema repository and the user database are replicated. When you work with a database replica, you are working with two physical databases: a schema repository replica and a user database replica.

Each replica is recorded in a table in the schema repository database. This table, which is replicated, includes information about the replica and the associated synchronization server. Each schema repository database also contains information about how to connect to each database in its database set. This information is not replicated.

Most information stored in HCL Compass databases is replicated. The following types of information are not replicated:
  • Checked-out copies of schemas.
  • Schema of a user database. (Local administrators must choose when to upgrade the database.)