Limited transaction support

The limited transaction support provides information about its properties.

Transactions have four critical properties:
atomicity
The transaction must be run completely. If any part of the transaction fails, the entire transaction is rolled back preserving the original state of the directory.
consistency
The transaction preserves the internal consistency of the database.
isolation
The transaction is serialized by a global lock so that it is run independently of any other transactions.
durability
The results of a committed transaction are backed up in stable storage, usually a disk.