'Clustering index' presentation slideshows

CS143: Index

CS143: Index. Topics to Learn. Important concepts Dense index vs. sparse index Primary index vs. secondary index (= clustering index vs. non-clustering index) Tree-based vs. hash-based index Tree-based index Indexed sequential file B+-tree Hash-based index Static hashing

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Data Organization - B-trees

Data Organization - B-trees. A simple index. Index file. Brighton A-217 700 Downtown A-101 500 Downtown A-110 600 Mianus A-215 700 Perry A-102 400. A-101 A-102 A-110 A-215 A-217. Index of depositors on acct_no.

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CS143: Index

CS143: Index. Book Chapters: (4 th ) 12.1-3, 12.5-8 (5 th ) 12.1-3, 12.6-8, 12.10. Topics to Learn. Important concepts Dense index vs. sparse index Primary index vs. secondary index (= clustering index vs. non-clustering index) Tree-based vs. hash-based index Tree-based index

1.08k views • 70 slides

Indexes - Chapter 18.3-18.5

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533 views • 53 slides

CS4432: Database Systems II

CS4432: Database Systems II. Operator Algorithms Chapter 15. Query Optimization. --> Generating and comparing plans Query Generate Plans Pruning x x Estimate Cost Cost Select. Pick Min. To generate plans consider:. Transforming relational algebra expression

591 views • 52 slides

621 views • 51 slides

Completing the Physical-Query-Plan and Chapter 16 Summary (16.7-16.8)

Completing the Physical-Query-Plan and Chapter 16 Summary (16.7-16.8). CS257 Spring 2009 Professor Tsau Lin Student: Suntorn Sae-Eung Donavon Norwood. Outline. 16.7 Completing the Physical-Query-Plan I. Choosing a Selection Method II. Choosing a Join Method

609 views • 51 slides

7. Indexes

Section 7 # 1. Heap files allow record retrieval: by specifying the Record IDentifier, RID , or by scanning all records sequentially. Sometimes, retrieval of records by specifying the values in one or more fields is needed (semantic search or value-based querying), e.g.,

511 views • 41 slides

7. Indexes

Heap files allow record retrieval: by specifying the Record IDentifier, RID , or by scanning all records sequentially. Sometimes, retrieval of records by specifying the values in one or more fields is needed (semantic search or value-based querying), e.g.,

419 views • 41 slides

Indexes

Indexes. A Heap file allows record retrieval: by specifying the rid , or by scanning all records sequentially Sometimes, retrieval of records by specifying the values in one or more fields is needed (semantic search or value-based query), e.g.,

482 views • 41 slides

Physical Design

Physical Design. 3. Introduction. Database Design Methodology requirements specification ER/EER modelling validation of ER/EER models; aggregation of different views transformation of ER/EER model into relational model normalisation physical design monitor and tune operational system.

651 views • 34 slides

Chapter 12: Indexing and Hashing

Chapter 12: Indexing and Hashing. Indexing Basic Concepts Ordered Indices B+-Tree Index Files Hashing Static Dynamic Hashing. search key pointer. Basic Concepts. Value Search Key - set of attributes used to look up records in a file. record. ?. value. Index Evaluation Metrics.

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Select Operation Strategies And Indexing (Chapter 8)

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Completing the Physical-Query-Plan and Chapter 16 Summary (16.7-16.8)

Completing the Physical-Query-Plan and Chapter 16 Summary (16.7-16.8). CS257 Spring 2009 Professor Tsau Lin Student: Suntorn Sae-Eung Donavon Norwood. 16.7 Completing the Physical-Query-Plan. 3 topics related to turning LP into a complete physical plan

441 views • 33 slides

Chapter 14

Chapter 14. Indexing Structures for Files. FIGURE 14.1 Primary index on the ordering key field of the file shown in Figure 13.7. FIGURE 14.2 A clustering index on the DEPTNUMBER ordering nonkey field of an EMPLOYEE file.

271 views • 17 slides

Chapter 14

Chapter 14. Indexing Structures for Files. FIGURE 14.1 Primary index on the ordering key field of the file shown in Figure 13.7. FIGURE 14.2 A clustering index on the DEPTNUMBER ordering nonkey field of an EMPLOYEE file.

173 views • 17 slides

David Le CS257, ID: 126 Feb 28, 2013

15.9 Query Execution Summary. David Le CS257, ID: 126 Feb 28, 2013. Overview. Query Processing Outline of Query Compilation Table Scanning Cost Measures Review of Algorithms One- pass Methods Nested - Loop Join Two - pass Sort- based Hash- based Index- based Multi- pass.

264 views • 14 slides