31.2 Current Limitations

• The terms are not necessarily fetched in the same order as they were stored.
• If the process dies during an update operation (db_store/3, db_erase/[2,3]), the database can be inconsistent.
• Databases can only be shared between processes running on the machine where the environment is created (see Predicates). The database itself can be on a different machine.
• The number of terms ever inserted in a database cannot exceed 2^32-1.
• Duplicate keys are not handled efficiently by Berkeley DB. This limitation is supposed to get lifted in the future. Duplicate keys can result from indexing on non-key attribute sets, inserting terms with variables on indexing positions, or simply from storing the same term more than once.