'Materialized view' diaporamas de présentation

V iew Maintenance

V iew Maintenance. Based on several papers in view maintenance, most notably: A.Gupta and I.S. Mumick. Maintenance of Materialized Views: Problems, Techniques, and Application . In Bulletin of Technical Committee on Data Engineering 1995. Outline. Introduction to views

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Materialized Views

1.02k views • 73 slides

Query Optimization

Query Optimization. Arash Izadpanah. Introduction: What is Query Optimization?. Query optimization is the process of selecting the most efficient query-evaluation plan from among the many strategies usually possible for processing a given query , especially if the query is complex .

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Agenda

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Materialized Views

Materialized Views. Objectives. After completing this lesson, you should be able to do the following: Describe how summaries can be used to improve performance Differentiate materialized view types Explain materialized view integrity Create a materialized view

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Materialized Views

Materialized Views. Objectives. After completing this lesson, you should be able to do the following: Describe how summaries can be used to improve performance Differentiate materialized view types Explain materialized view integrity Create a materialized view

649 views • 44 slides

Managing Storage

Managing Storage. Space Management Proactive Monitoring Seg. Advisor & Seg.Shrink Resumable Allocation Transportable TBS and DB. Objectives. After completing this lesson, you should be able to: Describe how the Oracle database automatically manages space

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ADVANCE REPLICATION

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Data Replication with Materialized Views

Data Replication with Materialized Views. ISYS 650. What is a Materialized View ?. A materialized view (MV) is a database object that stores the results of a query at a single point in time. Unlike a view, materialized view is not virtual.

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Oracle Database 11g New Features for BI / DW

Oracle Database 11g New Features for BI / DW. New Partitioning Methods Invisible indexes PIVOT / UNPIVOT OLAP and SQL. Agenda. Database Enterprise Edition 11g (11.1.0.7.0) SQLDeveloper 11g (1.5.1) Warehouse Builder 11g (11.1.0.7.0) Analytical Workspace Manager (11.1.0.7.0B).

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Transactions, Views, Indexes

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ScaleDB Technical Presentation

Scaling MySQL to New Heights. ScaleDB Technical Presentation. Thursday April 17, 2008. ScaleDB for MySQL. Database. InnoDB, MyISAM, Cluster, Falcon, BDB, Merge, etc. Storage Engine. What Makes ScaleDB Better?. ScaleDB Advantages:

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Transactions, Views, Indexes

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Materialized Views

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Views, Indexes*

Virtual and Materialized Views Speeding Accesses to Data. Views, Indexes*. * Adapted from slides given at Stanford by H. Molina. Views. A view is a relation defined in terms of stored tables (called base tables ) and other views. Two kinds:

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View and Materialized view

View and Materialized view. What is a view?. Logically represents subset of data from one or more table. In sql , a view is a virtual relation based on result-set of a SELECT statement. It contains rows and columns just like a real table.

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Chapter 8: The Physical Data Warehouse

Chapter 8: The Physical Data Warehouse. Data Warehousing Lab. ? ? ?. ??. The VLDB Supporting a Star Schema Parallelism and Performance of Physical Data Warehouse Tablespace Segregation Other Physical Considerations / Oracle Internet File System Physical Implementation Approach. The VLDB.

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Using Materialized Views

Using Materialized Views. Objectives. After completing this lesson, you should be able to: Use materialized views to access remote data using local queries Configure fast refresh for a materialized view. Materialized Views. Materialized views can be created to:

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Database Views

Database Views. Chapter 5 (6/E) Chapter 8 (5/E). Lecture Outline. Database views provide convenient usage Virtual view realized when query uses that view Materialized views allow efficient re-use Must be recalculated or updated when base tables change. Views for Customization.

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