The phenomenon of industries developing into group organizations has become more and more popular. Most group industries are working actively and hard to expand their market shares and profits by diversifying their investments. Because of having a complete self-developed system, some group companies think their practical experience of business flow paths in system development can be used as reference resources for other companies. These group companies, therefore, encourage their information units to shift the models of ¡§entrepreneurial venture Spin-off company¡¨. According to the past experience and impressions of cooperating with the spin-off companies, some subsidiaries of the group companies have developed a strategy to outsource their information system to spin-off companies. This is a case study with long-term observation in the field. We use the theory of Aspiration-Level Adaptation (Cyert & March, 1963) as a basis to explain the process of decision adaptation while the subsidiary of the group company seeks for software outsourcing from a spin-off company. The outsourcing of the subsidiary of the group company was determined by the inter-trust relationship between the subsidiary and spin-off company as well as the past working performance. The decision index is quite simple. But when the performance of the outsourcing information spin-off company cannot meet the subsidiary¡¦s expectations, the subsidiary will adjust its behaviors and decisions toward the spin-off company by its past experience. The subsidiary will also set up a suitable outsourcing management and control mechanism. Thus, we can see that the information outsourcing process is a continual process of aspiration-level adaptation, and the outsourcing company will adjust its decision according to the degrees that the spin-off company meets its expectancy level.

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" Materialized integration views constructed by integrating data from multiple distributed data sources help to achieve better access, reliable performance, and high availability for a wide range of applications. In this dissertation, we propose parallel, adaptive, and grouping techniques to address scalability challenges in high-performance integration view computation and maintenance due to increasingly large data sources and high rates of source updates. State-of-the-art parallel integration view computation makes the common assumption that the maximal pipelined parallelism leads to superior performance. We instead propose segmented bushy parallel processing that combines pipelined parallelism with alternate forms of parallelism to achieve an overall more effective strategy. Experimental studies conducted over a cluster of high-performance PCs confirm that the proposed strategy has an on average of 50\% improvement in terms of total processing time in comparison to existing solutions. Run-time adaptation becomes critical for parallel integration view computation due to its long running and memory intensive nature. We investigate two types of state level adaptations, namely, state spill and state relocation, to address the run-time memory shortage. We propose lazy-disk and active-disk approaches that integrate both adaptations to maximize run-time query throughput in a memory constrained environment. We also propose global throughput-oriented state adaptation strategies for computation plans with multiple state intensive operators. Extensive experiments confirm the effectiveness of our proposed adaptation solutions. Once results have been computed and materialized, it's typically more efficient to maintain them incrementally instead of full recomputation. However, state-of-the-art incremental view maintenance require O($n^2$) maintenance queries with n being the number of data sources that the view is defined upon. Moreover, they do not exploit view definitions and data source processing capabilities to further improve view maintenance performance. We propose novel grouping maintenance algorithms that dramatically reduce the number of maintenance queries to (O(n)). A cost-based view maintenance framework has been proposed to generate optimized maintenance plans tuned to particular environmental settings. Extensive experimental studies verify the effectiveness of our maintenance algorithms as well as the maintenance framework. "

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