Searching for authors named "Alexandros Labrinidis" – sorted by Relevance.
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On the Materialization of WebViews (Extended Abstract)
- …Abstract AWebView is a web page that is automatically created from base data, which are usually drawn from a DBMS. A WebView can be either materialized as an html page at the web server, or virtual, always being computed on-the-fly. For the materialized case, updates to base data lead to immediate …
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A Performance Evaluation of Online Warehouse Update Algorithms
- …Data warehouse maintenance algorithms usually work off-line, making the warehouse unavailable to users. However, since most organizations require continuous operation, we need be able to perform the updates online, concurrently with user queries. To guarantee that user queries access a consistent vi…
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Online View Selection for the Web
- …View materialization has been shown to ameliorate the scalability problem of data-intensive web servers. However, unlike data warehouses which are off-line during updates, most web servers maintain their back-end databases online and perform updates concurrently with user accesses. In such environme…
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Reduction of Materialized View Staleness Using Online Updates
- …Updating the materialized views stored in data warehouses usually implies making the warehouse unavailable to users. We propose MAUVE , a new algorithm for online incremental view updates that uses timestamps and allows consistent read-only access to the warehouse while it being updated. The algorit…
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Exploring the tradeoff between performance and data freshness in database-driven web servers
- …Personalization, advertising, and the sheer volume of online data generate a staggering amount of dynamic web content. In addition to web caching, View Materialization has been shown to accelerate the generation of dynamic web content. View materialization is an attractive solution as it decouples t…
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Preference-Aware Query and Update Scheduling in Web-databases
- …Typical web-database systems receive read-only queries, that generate dynamic web pages as a response, and writeonly updates, that keep information up-to-date. Users expect short response times and low staleness. However, it may be extremely hard to apply all updates on time, i.e., keep zero stalene…
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Update Propagation Strategies for Improving the Quality of Data on the Web
- …Dynamically generated web pages are ubiquitoustoday but their highdemand for resources creates a huge scalability problem at the servers. Traditional web caching is not able to solve this problem since it cannot provide any guarantees as to the freshness of the cached data. A robust solution to t…
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On the Materialization of WebViews
- …A WebView is a web page that is automatically created from base data, which are usually drawn from a DBMS. A WebView can be either materialized as an html page at the web server, or virtual, always being computed on-thefly. For the materialized case, updates to base data lead to immediate recomputat…
- Cited by 11 (3 self) – Add To MetaCart
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Update Propagation Strategies for Improving the Quality of Data on the Web
- …Dynamically generated web pages are ubiquitous today but their high demand for resources creates a huge scalability problem at the servers. Traditional web caching is not able to solve this problem since it cannot provide any guarantees as to the freshness of the cached data. A robust solution …
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ABSTRACT Quality is in the Eye of the Beholder: Towards User-Centric Web-Databases ∗
- …The proliferation of database-driven web sites (or web-databases) has brought upon a plethora of applications where both Quality of Service (QoS) and Quality of Data (QoD) are of paramount importance to the end users. In our previous work, we have proposed Quality Contracts, a comprehensive framewor…
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