A technician can cause data loss on the hard drive if a mechanical hard drive is mishandled

A(n) ________ creates a project plan structure in which project tasks are identified, task relationships are defined, and task resources are assigned

Fill in the blank(s) with correct word

Consider the recovery aspects of the nested transactions. Assume that a withdraw transaction will abort if the account will be overdrawn and that in this case the parent transaction will also abort. Describe serially equivalent interleavings of T1, T2, U1 and U2 with the following properties:

(i) that is strict; (ii) that is not strict. To what extent does the criterion of strictness reduce the potential concurrency gain of nested transactions?