The McDBTransactions collection encapsulates all transactions managed by the database engine, only one of which may be active at a time (i.e. encapsulating the valid, existing object(s)). This property will read or set this value.

A McDBTransaction object.  

[Set] object.ActiveTransaction [= McDBTransaction]

The ActiveTransaction Property syntax has these parts:

Assigning this property a value of Nothing will place the database engine into a discrete, unnamed transaction namespace where actions may not be transacted.