'Leaf pages' diaporamas de présentation

External sorting

757 views • 52 slides

Overview of Storage and Indexing

Overview of Storage and Indexing. Chapter 8. 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

397 views • 31 slides

SQL Server Management Tools

SQL Server Management Tools. Lesson 28. Skills Matrix. Using Data-tier Applications. Your developers use Visual Studio to develop your new application. They create a data-tier application (DAC) as a single unit for authoring, deploying and managing the multiple involved objects.

444 views • 31 slides

Chapter 12 B+ Trees

Chapter 12 B+ Trees. CS 157B Spring 2003 By: Miriam Sy. B+ Tree. The B+ Tree index structure is the most widely used of several index structures that maintain their efficiency despite insertion and deletion of data.

353 views • 25 slides

Query Optimizer (Chapter 9.0 - 9.6)

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External Sorting

External Sorting. Chapter 13 (3 rd Edition). Why Sort?. A classic problem in computer science! Data requested in sorted order e.g., find students in increasing gpa order Sorting is first step in bulk loading B+ tree index.

320 views • 18 slides

SQL Server Query Tuning Best Practices

SQL Server Query Tuning Best Practices. Aaron Bertrand SQL Sentry, Senior Consultant @AaronBertrand. Kevin Kline SQL Sentry, Dir of Engineering Services @ KEKline. New eBOOK Available!.

360 views • 15 slides

Tree-based Indexing

Tree-based Indexing. Hessam Zakerzadeh. ISAM ( Indexed Sequential Access Method ). ISAM was originally developed by IBM for mainframe computers Allows records to be accessed: sequentially (in the order they were entered) randomly (with an index). ISAM ( Indexed Sequential Access Method ).

397 views • 15 slides

SQL Server Query Tuning Best Practices

SQL Server Query Tuning Best Practices. Aaron Bertrand SQL Sentry, Senior Consultant @AaronBertrand. Kevin Kline SQL Sentry, Dir of Engineering Services @ KEKline. New eBOOK Available!.

291 views • 15 slides

B+ Tree Implementation Details for Minibase

341 views • 12 slides

ISAM: Indexed-Sequential-Access-Method

1.37k views • 9 slides

Tree-based Indexing

Tree-based Indexing. Hessam Zakerzadeh. ISAM ( Indexed Sequential Access Method ). Static index structure. Effective when file is not frequently updated. Data values reside in leaf nodes. Overflow . page. Non-leaf. Pages. Leaf. Pages. Primary pages. Leaf pages contain data entries .

752 views • 9 slides

Range Searches

204 views • 7 slides