Management technology materialized views in information systems
نویسندگان
چکیده
منابع مشابه
Materialized views in Cassandra
Many web companies deal with enormous data sizes and request rates beyond the capabilities of traditional database systems. This has led to the development of modern Big Data Platforms (BDPs). BDPs handle large amounts of data and activity through massively distributed infrastructures. To achieve performance and availability at Internet scale, BDPs restrict querying capability, and provide weak...
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Oracle Materialized Views (MVs) are designed for data warehousing and replication. For data warehousing, MVs based on inner/outer equijoins with optional aggregation, can be refreshed on transaction boundaries, on demand, or periodically. Refreshes are optimized for bulk loads and can use a multi-MV scheduler. MVs based on subqueries on remote tables support bidirectional replication. Optimizat...
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Materialized views are a powerful feature that has been part of the Oracle RDBMS since version 8.1. Based upon the snapshot replication feature, they have evolved considerably into a capable tool for significantly improving performance on queries at higher levels of hierarchical organization structures. When they are effectively implemented across an entire data warehouse, the total number of l...
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متن کاملMaterialized Views in Data Mining
Relational views are used both as a specification technique and as an execution plan for the derivation of the warehouse data. Currently available mining algorithms suffer from long processing times depending mainly on the size of the dataset. One observation is that the results of consecutive data mining queries are usually very similar. This observation leads to the idea of reusing materializ...
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ژورنال
عنوان ژورنال: Technology audit and production reserves
سال: 2012
ISSN: 2312-8372,2226-3780
DOI: 10.15587/2312-8372.2012.4822