| Publisher | Microsoft | ||
|---|---|---|---|
| Format | 436.2KB PDF | Date added | 23 Oct 2006 |
| Topics | Knowledge and Data Management, Programming Languages, Database Management | ||
| Downloads | 63 | ||
This paper introduces a new abstract model of database query processing, finite cursor machines that incorporates certain data streaming aspects. The model describes quite faithfully what happens in so-called "One-pass" and "Two-pass query processing". Technically, the model is described in the framework of abstract state machines. The main results are upper and lower bounds for processing relational algebra queries in this model, specifically, queries of the semijoin fragment of the relational algebra.
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