SDTP -- A Multilevel-Secure Distributed Transaction Processing System
نویسندگان
چکیده
منابع مشابه
Security Issues in Distributed Transaction Processing Systems
Transaction-processing systems (TPS) are becoming increasingly more available as commercial products. However, the approaches to the issues associated with using TPS in multilevel secure environments are still in the research stage. In this article, we address the issues of multilevel security in distributed transaction-processing systems. A distributed transaction-processing system (DTPS) is a...
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In distributed database systems (DDBSs), a transaction acquires the locks on the data objects during the execution and releases them only after the completion of commit processing. In DDBSs, it can be observed that, even though a transaction produces new data object values on completion of execution and these new data object values are not a ected during commit processing, the locks are release...
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In this paper, we propose speculative distributed transaction processing (SDTP) strategy, in which, a transaction releases the locks on the data objects immediately after the completion of its execution and starts commit processing. By accessing both original values and updated values immediately after the transaction's execution, the waiting transaction speculatively carries out alternative ex...
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Since 1990, transaction processing in multilevel secure database management systems (DBMSs) has been receiving a great deal of attention from the database research community. Transaction processing in these systems requires modiication of conventional scheduling algorithms and commit protocols. These modiications are necessary because preserving the usual transaction properties when transaction...
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The rapid growth of the networking and information-processing industries has led to the development of distributed database management system prototypes and commercial distributed database management systems. In such a system, the database is stored in several computers which are interconnected by some communication media. The aim of a distributed database management system (DDBMS) is to proces...
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