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Big Brain: A Single Database System for a Federated Data Warehouse Architecture

Year: 2018 Volume: 12 Issue: 10 805 - 808 Pages

• Authors:
• X. Gumara Rigol
• I. Martínez de Apellaniz Anzuola
• A. Garcia Serrano
• A. Franzi Cros
• O. Vidal Calbet
• A. Al Maruf

Abstract: Traditional federated architectures for data warehousing work well when corporations have existing regional data warehouses and there is a need to aggregate data at a global level. Schibsted Media Group has been maturing from a decentralised organisation into a more globalised one and needed to build both some of the regional data warehouses for some brands at the same time as the global one. In this paper, we present the architectural alternatives studied and why a custom federated approach was the notable recommendation to go further with the implementation. Although the data warehouses are logically federated, the implementation uses a single database system which presented many advantages like: cost reduction and improved data access to global users allowing consumers of the data to have a common data model for detailed analysis across different geographies and a flexible layer for local specific needs in the same place.

• Keywords:
• Data integration
• data warehousing
• federated architecture
• online analytical processing.

Studying on ARINC653 Partition Run-time Scheduling and Simulation

Year: 2012 Volume: 6 Issue: 11 1460 - 1464 Pages

• Authors:
• Dongliang Wang
• Jun Han
• Dianfu Ma
• Xianqi Zhao

Abstract: Avionics software is safe-critical embedded software and its architecture is evolving from traditional federated architectures to Integrated Modular Avionics (IMA) to improve resource usability. ARINC 653 (Avionics Application Standard Software Interface) is a software specification for space and time partitioning in Safety-critical avionics Real-time operating systems. Arinc653 uses two-level scheduling strategies, but current modeling tools only apply to simple problems of Arinc653 two-level scheduling, which only contain time property. In avionics industry, we are always manually allocating tasks and calculating the timing table of a real-time system to ensure it-s running as we design. In this paper we represent an automatically generating strategy which applies to the two scheduling problems with dependent constraints in Arinc653 partition run-time environment. It provides the functionality of automatic generation from the task and partition models to scheduling policy through allocating the tasks to the partitions while following the constraints, and then we design a simulating mechanism to check whether our policy is schedulable or not

• Keywords:
• Arinc653
• scheduling
• task allocation
• simulation.