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Updatable Views in Object-Oriented Databases
TLDR
It is shown that updating object views is much more feasible than in the case of relational views, and the key property of a query language leading to this result is object preserving operator semantics. Expand
The relational model with relation-valued attributes
TLDR
This paper allows the application of the basic relational operators to any relation-valued attribute within a relation, which leads to a (hierarchically) nested relational algebra. Expand
Transactional information systems: theory, algorithms, and the practice of concurrency control and recovery
TLDR
The authors begin with a broad look at the role of transactional technology in today's economic and scientific endeavors, then delve into critical issues faced by all practitioners, presenting today's most effective techniques for controlling concurrent access by multiple clients, recovering from system failures, and coordinating distributed transactions. Expand
Schema transformation without database reorganization
TLDR
It is shown that data independence, which is a neglected concept in object databases, helps to avoid reorganizations in case of capacity preserving and reducing schema transformations. Expand
Event Identification and Tracking in Social Media Streaming Data
TLDR
A simple sliding window model is discussed, which uses shifts in the inverse document frequency (IDF) to capture trending terms as well as to track the evolution and the context around events. Expand
A Relational Object Model
TLDR
This paper presents a powerful view definition facility that basically allows object views as well as relational views to be defined in the authors' object algebra, and shows an evolutionary path from relational, essentially nested relational, to object-oriented data models and query languages. Expand
How to Comprehend Queries Functionally
TLDR
This work adopts a view of query processing which is greatly influenced by ideas from the functional programming domain, and presents a uniform formal framework which covers all query translation phases, including user-level query language compilation, query optimization, and execution plan generation. Expand
Incremental Updates for Materialized OQL Views
TLDR
It turns out that it is feasible to employ ODMG OQL as a view definition language — instead of inventing a specialized one — in such an environment, since the majority of its clauses represent linear functions. Expand
Exploring OLAP aggregates with hierarchical visualization techniques
TLDR
It is suggested that visual hierarchies are adequate for mapping the multiscale nature of decomposition as they preserve the results of the entire interaction in a predominantly "drill-down" fashion. Expand
XQuery Full Text Implementation in BaseX
TLDR
Some of the enhancements made to the XML database to fully support the language extensions are presented and implementation details are given on the XQuery compiler, which supports sequential scanning, index-based, and hybrid processing of full-text queries. Expand
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