Aggregation is an important concept in database design where composite objects can be modelled during the design of database applications. Therefore, preserving the aggregation concept in database implementation is essential. In this paper, we propose models for implementation of aggregation in an ...
issues,butinitscommonformofequalitybasedgroupsandrestrictedaggregatefunctionsanumber ofproblemsremainunsolved.Variousextensionstothisconcepthavebeenintroducedoverthelast yearsregardinguser-definedfunctionsforaggregationandgrouping.Especially,existingextensions
DBMSmag's website re A Black Eye Heals as Sybase 11Recovers from Performance and Quality Problems in System Nov. 10, 1996. DBMS online's website re An Interactive Warehousing Architecture Can Extend the Scale of Your Information, Aug. 1997. DBMS online's website re An Interactive ...
in Proceedings of ACM SIGMOD, International Conference on Management of Data, Santa Barbara, Calif., U.S.A. 2001, discloses decorrelation techniques adopted in the Microsoft® SQL Server product are described. The concept that is most relevant is one called SegmentApply. Whenever a join connect...
The origin of the term map-side reduce is from the Map/Reduce domain, and its concept can be challenging to grasp in the context of Apache Spark. In case we can merge several elements in a partition before shuffling them, provided that the merged components occupy less space, it would be...
Hendevelops the concept of a semantic relationship graph to describe thenrelationships between data and then presents inference aggregation asnthe problem of finding alternative paths between vertices on the graph.nHe presents an algorithm for processing the semantic relationship graphnto discover whether ...
Projecting data in different dimensions is the core concept taken for this project. The data will be dimensionalised by three different concepts like, CASE: Exploiting the programming CASE construct; SPJ: Based on standard relational algebra operators (SPJ queries); PIVOT: Using the PIVOT operator...