Penerbit

acm 1992

Pengarang

Rosana S.G. Lanzelotte, Patrick Valduriez, Mohamed Zait;

Judul

Judul Artikel

Optimization of objects-oriented recursive queries using cost-controlled strategies (hal 256 - 265)

Nama Prosiding

Proceedings of the 1992 acm sigmod international conference on management of data san diego,carlifonia june 2-5,1992

Bahasa

eng

Abstrak Indonesia

Abstrak English

Object-oriented data models are being extended with recursion to gain expressive power. this complicates the optimization problem which has to deal with recursive queries on complex objects. because unary operations invoking methods or path experssions on objects may be costly to execute, traditional heuristics for optimizing recursive queries are no longer valid. in this paper we propose a cost-based optimization method which handles objects-oriented recursive queries. in particular it is able to delay the decision of pushing selective operations through recursion until the effect of such a transformation can be measured by a cost model. the approach integrates rewriting and increases the optimization opportunities for recursive queries on objects while allowing for efficient optimization.

Kata Kunci

Tahun

1992

No. Panggil

SEM - 359