1 Indexing. 2 Overview An index is a table containing a list of keys associated with a reference field pointing to the record where the information referenced.
Binary Trees CSC 220. Your Observations (so far data structures) Array –Unordered Add, delete, search –Ordered Linked List –??
CpSc 881: Information Retrieval. 2 Dictionaries The dictionary is the data structure for storing the term vocabulary. Term vocabulary: the data Dictionary:
PrasadL05TolerantIR1 Tolerant IR Adapted from Lectures by Prabhakar Raghavan (Google) and Christopher Manning (Stanford)
Spatial Indexing SAMs. Spatial Access Methods PAMs Grid File kd-tree based (LSD-, hB- trees) Z-ordering + B+-tree R-tree Variations: R*-tree, Hilbert.
Disks and Files Vivek Pai Princeton University. 2 Why Files Physical reality Block oriented Physical sector #s No protection among users of the system.
B-Trees Disk Storage What is a multiway tree? What is a B-tree? Why B-trees? Insertion in a B-tree Deleting from a B-tree.
קובץ רב-אינדקס Multi-Indexed File File Organization.
Spatial, text, and multimedia databases Erik Zeitler UDBL.
Spatial Queries. R-tree: variations What about static datasets? (no ins/del) Hilbert What about other bounding shapes?
IntroductionIntroduction Definition of B-trees Properties Specialization Examples 2-3 trees Insertion of B-tree Remove items from B-tree.
Database System Architecture and Performance CSCI 6442 ©Copyright 2015, David C. Roberts, all rights reserved.
