P. M. Bober. Towards Practical Multiversion Locking Techniques for On-Line Query Processing. PhD thesis, University of Wisconsin - Madison, 1993. Home/Search Document Details and Download
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On-Line Query Processing through Undo/No-Redo Compensation - Grøvlen, Hvasshovd (1996) (Correct)
....prevents efficient pipelining of relational algebra operations. Tuples will not be emitted from the query before the entire base relations have been scanned. ffl The method is not applicable to transaction consistent execution of long running application programs that may involve several queries [Bobe93] ffl The method does not support delta locks operations. This paper presents an alternative method for compensation based query processing. In section 2, we show how the query process use log processing to obtain information about concurrent updates. In section 3, we present the new method for ....
P. M. Bober. Towards Practical Multiversion Locking Techniques for On-Line Query Processing. PhD thesis, University of Wisconsin - Madison, 1993.
Low-Cost Compensation-Based Query Processing - Grøvlen, Hvasshovd, Torbjørnsen (Correct)
....drawback of the method is that it adds extra work to transactions in order to maintain the update list. This could possibly increase transaction response times. In addition, the method is not applicable to transaction consistent execution of read only transactions that consist of several queries [2]. This paper presents a more efficient method for compensation based query processing. In Section 2, it is described how the query can use the database internal log to obtain information about concurrent updates. Section 3 presents the new method for compensation based query processing, and a ....
P. M. Bober. Towards Practical Multiversion Locking Techniques for On-Line Query Processing. PhD thesis, University of Wisconsin - Madison, 1993.
Compensation-Based Query Processing in On-Line.. - Grøvlen.. (Correct)
....into the update list, or the query process must eliminate updates of all but committed transactions from the update list before applying it to the temporary relations. The method is not applicable to transaction consistent execution of readonly transactions that consist of several queries [1]. This paper presents an alternative method for compensation based query processing. In Sect. 2, it is described how the query can use the log to obtain information about concurrent updates. Section 3 presents the new method for compensation based query processing, and Sect. 4 explains how this ....
P. M. Bober. Towards Practical Multiversion Locking Techniques for On-Line Query Processing. PhD thesis, University of Wisconsin - Madison, 1993.
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