A、An application process acquires at least a share lock on the current row of every cursor.

B、Any row that is read during a unit of work cannot be changed by other application processes until the unit of work is complete.

C、Any row changed by another application process can be read, even if the change has not been committed by that application process.

D、An application process that issues the same query more than once in a unit of work will not see additional rows caused by other application processes appending new information to the database.