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Database Management Systems Session 9

Database Management Systems Session 9

Database Management Systems Session 9. Instructor: Vinnie Costa vcosta@optonline.net. The $100 Laptop Moves Closer to Reality.

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1.06k views • 90 slides
CSE 544: Lecture 11 Storing Data, Indexes

CSE 544: Lecture 11 Storing Data, Indexes

CSE 544: Lecture 11 Storing Data, Indexes. Monday, 5/1/2006. Outline. Storing data: disks and files - 9.5-9.7 Types of Indexes - Chapter 8.3 B-trees - Chapter 10. Managing Free Blocks. By the OS By the RDBMS (typical: why ?) Linked list of free blocks Bit map. Files of Records.

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525 views • 52 slides
B+-Trees and Hashing Techniques for Storage and Index Structures

B+-Trees and Hashing Techniques for Storage and Index Structures

Last changed: February 6, 03, 3p. B+-Trees and Hashing Techniques for Storage and Index Structures. Covers Chapters [[8]], 10, 11 Third Edition Last updated: January 30, 2003. Alternative File Organizations. Many alternatives exist, each ideal for some situation , and not so good in others:

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722 views • 35 slides
B+-Trees and Hashing Techniques for Storage and Index Structures

B+-Trees and Hashing Techniques for Storage and Index Structures

Last changed: February 6, 03, 3p. B+-Trees and Hashing Techniques for Storage and Index Structures. Covers Chapters [[8]], 10, 11 Third Edition Last updated: January 30, 2003. Alternative File Organizations. Many alternatives exist, each ideal for some situation , and not so good in others:

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620 views • 35 slides
File Organizations and Indexing

File Organizations and Indexing

File Organizations and Indexing. Chapter 8. Alternative File Organizations. Many alternatives exist, each ideal for some situation , and not so good in others: Heap files: Suitable when typical access is a file scan retrieving all records.

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434 views • 30 slides
DB performance tuning using indexes

DB performance tuning using indexes

DB performance tuning using indexes. Section 8.5 and Chapters 20 (Raghu). What do you need to know?. A relational operator can be executed using different physical algorithms An SQL query corresponds to a relational algebra expression and may map to alternative equivalent execution plans.

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345 views • 25 slides
Overview of Storage and Indexing

Overview of Storage and Indexing

Overview of Storage and Indexing. Data on External Storage. Disks: Can retrieve random page at fixed cost But reading several consecutive pages is much cheaper than reading them in random order Tapes: Can only read pages in sequence Cheaper than disks; used for archival storage

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548 views • 22 slides

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