How light TP monitors allow distributed applications
Explain how light TP monitors allow distributed applications based on RPC to have transaction properties.
Expert
A light TP-Monitor extends the transactional capabilities of a database beyond the database domain. It gives the mechanisms and tools essential to build applications in which transactional guarantees are provided. The TP-monitor tries to encapsulate the services provided within transactional brackets. This entails RPC augmented with:
Transactional RPC: Implements RPC and enforces scheduling operations, transactional semantics accordingly.
Transaction manager: runs 2PC and takes care of the recovery operations.
Log manager: records each and every changes done by transactions so that a consistent version of the system can be reconstructed in case of failures.
Lock manager: a generic mechanism regulating access to shared data outside the resource managers.
Explain briefly NFA operation with example.
Let REGEXP be the language of valid regular expressions over {a, b}. That is, REGEXP is the set of all strings over the symbols Σ= {a, b, (,), U,*, ^} that are valid regular expressions. For example, the string “a (a U b)" is in REGEXP, whereas the string
What do you understand by the term Finite Automata ?
explain to me the Classifications of parallel structures
Describe the Strategy of TOC computation box in brief ?
Proof the theorem that the class of regular languages is closed under union; that is, if L1 is recognized by a NFA and L2 is recognized by a NFA, then L1 υ L2 is recognized by a NFA as well.
Explain DFA diagrams and DFA operation in brief ?
Let α be a regular expression of length n. (a) Using procedures shown in class, if we convert α into a regular expression β such that L(β) = L(α). How long β might be? Give a reasonably tight upper bound.
How can we characterize DFA languages ?
Let s1 and s2 be two strings of lengths m and n respectively. By definition, a superstring of s1 and s2 is one which contains s1 and s2 as substrings. Give a dynamic programming algorithm to compute a shortest superstring of t
18,76,764
1956778 Asked
3,689
Active Tutors
1450095
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!