guarantees an efficient integrity checking that combines the advantages of declarativity with incrementality and early detection of inconsistencies. 1

reached upon the execution of update transactions. Several methods for efficient integrity checking and enforcing exist. We show in this paper how to apply one such method to automatically extend update transactions with locks and simplified consistency tests on the locked entities. All schedules produced

Outsourced storage has become more and more practical in recent years. Users can now store large amounts of data in multiple servers at a relatively low price. An important is-sue for outsourced storage systems is to design an efficient scheme to assure users that their data stored at remote

constraints into incremental and optimized tests specialized for given update patterns. These tests may involve the introduction of new views, but for relevant cases of recursion, simplified integrity constraints are obtained that can be checked more efficiently than the original ones and without auxiliary

for the integrity checking over the cloud computing with the support of the TPA using digital signature technique. The proposed model result was shown efficiently with a number of situations that performed by unauthorized attackers. The checking done over two parts the CSP and TPA, without giving any secure data

environment for Java, called Java PathFinder (JPF), which integrates model checking, program analysis and testing. Part of this work has consisted of building a new Java Virtual Machine that interprets Java bytecode. JPF uses state compression to handle big states, and partial order and symmetry reduction

We present Iris, a practical, authenticated file system designed to support workloads from large enterprises storing data in the cloud and be resilient against potentially untrustworthy service providers. As a transparent layer enforcing strong integrity guarantees, Iris lets an enterprise tenant

Symbolic Model Checking [3, 14] has proven to be a powerful technique for the verification of reactive systems. BDDs [2] have traditionally been used as a symbolic representation of the system. In this paper we show how boolean decision procedures, like Stalmarck's Method [16] or the Davis

We think of Match as an operator which takes two graph-like structures and produces a mapping between semantically related nodes. We concentrate on classifications with tree structures. In semantic matching, correspondences are discovered by translating the natural language labels of nodes into propositional formulas, and by codifying matching into a propositional unsatisfiability problem. We distinguish between problems with conjunctive formulas and problems with disjunctive formulas, and present various optimizations. For instance, we propose a linear time algorithm which solves the first class of problems. According to the tests we have done so far, the optimizations substantially improve the time performance of the system.

Binary Decision Diagrams (Bryant, R. E., 1986, IEEE Trans. Comput. C-35) to represent relations and formulas. We then show how our new Mu-Calculus model checking algorithm can be used to derive efficient decision procedures for CTL model checking, satistiability of linear-time temporal logic formulas