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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
19/07/1996 |
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Data da última atualização: |
19/12/2007 |
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Autoria: |
SAMPAIO, M. C. |
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Título: |
Cooperative transactions: a taxonomy and a new model. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE BANCO DE DADOS, 10., 1995. Recife. Anais... Recife: UFPe, 1995. |
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Páginas: |
p.83-99. |
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Idioma: |
Inglês |
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Notas: |
SBBD'95. Editado por Décio Fonseca. |
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Conteúdo: |
In the first part of this paper we present a new cooperation taxonomy based on our study about existing models of cooperative transactions. This taxonomy has enabled the creation of two new definitions of cooperation between transactions. The second part of the paper is devoted to a cooperative transaction model developed from one of these definitions. The model has been developed using a data-driven approach, where we have not considered constraints specific to one application class, but only data-specific constraints. The notion of a set of complementary objects is intrinsic here. Two objects belong to a set of complementary objects if they are connected by dependency relations, directly or transitively. A set of transactions in a cooperative unit must preserve the consistency of a set of complementary objects associated with the cooperative unit (global consistency). Transactions must interact and cooperate selectively in order to take into account the dependency relations between the respective objects that they manipulate. Coorrectness criteria, including serializability, should enable conditinnns to be determined where a cooperative unit can be terminated whileensuring global consistency. Global consistency must be ensured when there are concurrent transactions external to the cooperative unit, and in case of failure. |
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Categoria do assunto: |
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Marc: |
LEADER 01793naa a2200145 a 4500
001 1003000
005 2007-12-19
008 1995 bl uuuu u00u1 u #d
100 1 $aSAMPAIO, M. C.
245 $aCooperative transactions$ba taxonomy and a new model.
260 $c1995
300 $ap.83-99.
500 $aSBBD'95. Editado por Décio Fonseca.
520 $aIn the first part of this paper we present a new cooperation taxonomy based on our study about existing models of cooperative transactions. This taxonomy has enabled the creation of two new definitions of cooperation between transactions. The second part of the paper is devoted to a cooperative transaction model developed from one of these definitions. The model has been developed using a data-driven approach, where we have not considered constraints specific to one application class, but only data-specific constraints. The notion of a set of complementary objects is intrinsic here. Two objects belong to a set of complementary objects if they are connected by dependency relations, directly or transitively. A set of transactions in a cooperative unit must preserve the consistency of a set of complementary objects associated with the cooperative unit (global consistency). Transactions must interact and cooperate selectively in order to take into account the dependency relations between the respective objects that they manipulate. Coorrectness criteria, including serializability, should enable conditinnns to be determined where a cooperative unit can be terminated whileensuring global consistency. Global consistency must be ensured when there are concurrent transactions external to the cooperative unit, and in case of failure.
773 $tIn: SIMPÓSIO BRASILEIRO DE BANCO DE DADOS, 10., 1995. Recife. Anais... Recife: UFPe, 1995.
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Embrapa Agricultura Digital (CNPTIA) |
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