{"id":151035,"date":"1995-01-01T00:00:00","date_gmt":"1995-01-01T00:00:00","guid":{"rendered":"https:\/\/cm-edgetun.pages.dev\/en-us\/research\/msr-research-item\/the-hbpi-tree-a-modified-hb-tree-supporting-concurrency-recovery-and-node-consolidation\/"},"modified":"2018-10-16T20:17:37","modified_gmt":"2018-10-17T03:17:37","slug":"the-hbpi-tree-a-modified-hb-tree-supporting-concurrency-recovery-and-node-consolidation","status":"publish","type":"msr-research-item","link":"https:\/\/cm-edgetun.pages.dev\/en-us\/research\/publication\/the-hbpi-tree-a-modified-hb-tree-supporting-concurrency-recovery-and-node-consolidation\/","title":{"rendered":"The hBPi\/-tree: A Modified hB-tree Supporting Concurrency, Recovery and Node Consolidation"},"content":{"rendered":"<div class=\"asset-content\">\n<p>We describe a new access method, the hBPi-tree, an adaptation of the hB-tree index to the constraints of the Pi-tree. The Pi-trees, a generalization of the Blink-trees, provide high concurrency with recovery, because they break down structure modification into a series of short atomic actions. In addition, the Pi-trees include a node consolidation algorithm. The hB-tree is a multi-attribute index which is highly insensitive to dimensionality, but which has no node consolidation algorithm and has a flaw in its split\/post algorithm in certain special cases. The hBPi-tree corrects the splitting\/posting algorithm and adapts the concurrency, recovery and node consolidation of the Pi-tree to the hB-tree. The combination makes the hBPi-tree suitable for inclusion in a general-purpose database management system supporting multi-attribute and spatial queries.<\/p>\n<\/div>\n<p><!-- .asset-content --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>We describe a new access method, the hBPi-tree, an adaptation of the hB-tree index to the constraints of the Pi-tree. The Pi-trees, a generalization of the Blink-trees, provide high concurrency with recovery, because they break down structure modification into a series of short atomic actions. In addition, the Pi-trees include a node consolidation algorithm. The [&hellip;]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","msr-author-ordering":null,"msr_publishername":"Morgan Kaufmann Publishers","msr_publisher_other":"","msr_booktitle":"","msr_chapter":"","msr_edition":"","msr_editors":"","msr_how_published":"","msr_isbn":"","msr_issue":"","msr_journal":"","msr_number":"","msr_organization":"","msr_pages_string":"","msr_page_range_start":"","msr_page_range_end":"","msr_series":"","msr_volume":"","msr_copyright":"","msr_conference_name":"","msr_doi":"","msr_arxiv_id":"","msr_s2_paper_id":"","msr_mag_id":"","msr_pubmed_id":"","msr_other_authors":"Betty Salzberg, Georgio 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