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This paper presents and discusses the approaches taken by the ‘International Standard Organization’ (ISO) for supporting transaction oriented applications in open systems. The paper is based on the documents available January 1987. In the ISO reference model for ‘Open System Interconnection’ application-specific communication support is located in the application layer (7). The paper concentrates...
We present some of the major architectural principles of MODEL 204, a commercial database product of Computer Corporation of America for the IBM 370 computer, and indicate how these principles result in exceptional performance advantages performing certain common tasks in complex query processing. A few performance measurements comparing MODEL 204 to other commercial products are presented.
NonStop SQL is an implementation of ANSI SQL on Tandem Computer Systems. It provides distributed data and distributed execution. It can run on small computers and has been benchmarked at over 200 transactions per second on a large system. Hence, it is useable in both the information center and in production environments. NonStop SQL provides high-availability through a combination of NonStop device...
A brief history and description of the IBM product Airline Control System / Multiple Virtual Storage / Extended Architecture (ALCS/MVS/XA) and related IBM products. ALCS/MVS/XA is a high-performance high-availability data base/data communications (DB/DC) subsystem that runs under the IBM MVS/XA operating system.
Transaction processing systems with the functionality and throughput desirable to support future telecommunications network applications appear to be beyond the capability of conventional multiprocessor architectures. A central obstacle to realizing such systems is the cost of coordinating access of transactions in the various processors to shared data. In this paper, we introduce the principle of...
To enhance concurrency in a layered system architecture, a multi-level transaction approach is proposed. Low-level operations issued by some higher level action are treated as a layer-specific subtransaction. Thus, according to the rule of level-by-level serializability, semantic knowledge about application-specific actions can be utilized, and still single high-level actions may be interleaved on...
This paper argues that transaction processing adds relatively little overhead to applications that access shared abstract data objects. It also argues that transaction processing can be made easy to use for both users and implementors of shared objects. The implication is that transaction processing can be a very useful technique in a variety of application domains. To provide more evidence as to...
In this report we present the results of an initial performance evaluation of the Teradata DBC/1012 parallel database machine, based on an expanded version of the single-user Wisconsin benchmark. In our experiments we measured the effect of relation size, memory size, and indices on response time for selection, join, and aggregation queries, single-tuple updates, and relation sorts. We analyze and...
In this paper, we investigate the issues involved in using multiprocessors for high performance transaction processing applications. We use a simulation model to compare the performance of two different architectures, namely, Shared Everything and Shared Nothing. In Shared Everything, any processor can access any disk and all memory is shared. In Shared Nothing, neither disks nor memory is shared...
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