'Hash based' presentation slideshows

993 views • 88 slides

898 views • 88 slides

Indexing

Indexing. Indexing. Index ? What is it ?. Indexing. Index ? What is it ? A database index is a persistent memory data structure that improves efficiency of data lookup to rows of a table by a keyed access method. Indexing. Why do we need it ?. Indexing. Why do we need it ?

1.14k views • 76 slides

P2P Search

P2P Search. COP6731 Advanced Database Systems. P2P Computing. Powerful personal computer Share computing resources P2P Computing Advantages: Shared infrastructure costs Highly scalable No SPOF censorship-resistance. P2P Search Techniques. Centralized P2P systems

527 views • 41 slides

Distributed Scalable Content Discovery Based on Rendezvous Points

Distributed Scalable Content Discovery Based on Rendezvous Points. Jun Gao Ph.D. Thesis Proposal Computer Science Department Carnegie Mellon University May 20th, 2002. Outline. Content Discovery System (CDS) Thesis statement Related work Proposed CDS system Research plan Time line

443 views • 34 slides

CS4432: Database Systems II

318 views • 21 slides

313 views • 21 slides

Join Processing in Database Systems with Large Main Memories

Join Processing in Database Systems with Large Main Memories. Leonard D. Shapiro. ACM Transactions on Database Systems Vol. 11, No. 3, Sep 1986. Donghui Zhang, UC Riverside, May 17, 2002. Content. Join Definition Internal-Memory Joins External-Memory Model External-Memory Joins

300 views • 16 slides

Query Execution 15.5 Two-pass Algorithms based on Hashing

Query Execution 15.5 Two-pass Algorithms based on Hashing. By Swathi Vegesna. At a glimpse. Introduction Partitioning Relations by Hashing Algorithm for Duplicate Elimination Grouping and Aggregation Union, Intersection, and Difference Hash-Join Algorithm Sort based Vs Hash based

220 views • 12 slides

Query Processing

Query Processing. (Two-Pass Algorithms). Priyadarshini.S 006493851 Cs 257_117_ch 15_15.5. Two-Pass Algorithms Using Hashing. General idea: Hash the tuples using an appropriate hash key

175 views • 11 slides