Which of the following best describes a unit of work?
A.
It is a recoverable sequence of operations whose point of consistency is established when a
connection to a database has been established or when a mechanism known as asavepoint is
created.
B.
It is a recoverable sequence of operations whose current point of consistency can be
determined by querying the system catalog tables.
C.
It is a recoverable sequence of operations whose point of consistency is established when an
executable SQL statement is processed after a connection to a database has been established or
a previous transaction has been terminated.
D.
It is a recoverable sequence of operations whose point of consistency is only established if a
mechanism known as asavepoint is created.
Unit of work
A unit of work is a recoverable sequence of operations within an application process. A unit of work is sometimes called a logical unit of work.
At any time, an application process has a single unit of work, but the life of an application process can involve many units of work as a result of commit or full rollback operations.
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