PSOA RuleML: Integrated Object-Relational Data and Rules

Author(s):  
Harold Boley
Author(s):  
Vivekanand Gopalkrishnan ◽  
Qing Li ◽  
Kamalakar Karlapalem

In an Object Relational Data Warehousing (ORDW) environment, the semantics of data and queries can be explicitly captured, represented, and utilized based on is-a and class composition hierarchies, thereby resulting in more efficient OLAP query processing. In this chapter, we show the efficacy in building semantic-rich hybrid data indexes incorporating Structural Join Index Hierarchy (SJIH) on the ORDW views. Given a set of queries, we use a hill-climbing heuristic algorithm to select (near) optimal SJIHs, thereby embedding query semantics into the indexing framework. Finally, by a cost model, we analyze the effectiveness of our approach vis-a-vis the pointer chasing approach.


2018 ◽  
Vol 8 ◽  
pp. 235-240
Author(s):  
Karol Sawłuk ◽  
Marek Miłosz

The article presents the results of a comparative analysis of object-relation mapping technologies in the framework Symfony 3: Doctrine and Propel. The analysis was performed in terms of script execution speed and memory usage during database operations. The analysis allowed to identify the technology with faster and more efficient algorithms. Doctrine is up to three times faster than Propel.


2005 ◽  
Vol 27 (80) ◽  
pp. 23-38
Author(s):  
Isam M. Mohammed ◽  
Asma Y. Hamo ◽  
Alaa F. saeed

2020 ◽  
Vol 34 (3) ◽  
pp. 681-722 ◽  
Author(s):  
Fatemeh Riahi ◽  
Oliver Schulte

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