Give an example of a schedule executing at SNAPSHOT isolation in which two transactions each introduce a phantom that is not seen by the other transaction, resulting in incorrect behavior. Assume that the data items referred to in the description of SNAPSHOT isolation are rows.
What will be an ideal response?
p is a predicate over a particular table and x and y are rows satisfying p.
SELECT1(p) SELECT2(p) INSERT1(x) INSERT2(y)
An integrity constraint states that there can be no more than n items in the database
satisfying predicate p. Each transaction reads the tuples satisfying p finds there are
exactly (n ? 1) and therefore inserts a newtuple satisfying p. At the end there are
(n + 1) tuples satisfying p
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Write the header for a loop that will process each character of the string object movie in turn.
What will be an ideal response?
The subscript and superscript styles lower or raise text vertically, as well as resize it.
Answer the following statement true (T) or false (F)
The ________ is a tracking system created by the U.S. Department of Defense that uses satellites
A) ENIAC B) GPS C) ASCII D) UAS
You can make Windows 10 more accessible to someone with physical limitations by using the _____ window.
A. ?LIMITED USABILITY B. ?EASE OF ACCESS C. ?COMFORT OF INTERFACING D. ?PIPELINED BOOKMARKS