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In distributed systems, materialized views are used to improve data availability and reduce data transfers. A materialized view is a query whose results are pre-computed from multiple data sources and stored in the database. Defining views over heterogeneous data sources requires the design of a common query language or the conversion of the data sources in the same format. This paper addresses this...
As the data warehouse contains the sensitive information, which is used for decision making process, it is necessary to take precautionary measures in the data warehouse building process itself. Current approaches for the conceptual modeling of ETL do not address the security aspects in the conceptual modeling phase. In this paper, we propose a simulation model for secure data extraction in ETL processes...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.