Data Warehouses are used to maintain and manage the historical
information. Data Warehouses contains the sensitive information
such as financial records, customer's values etc. That information
is considered to be very important and private. Therefore, it is
necessary to secure the data from unauthorized accesses.
Considering the importance of data security many data security
models have been introduced in past years. Security models are used
to implement data security from the early stages of Data Warehouse.
These models are not suitable for existing Data Warehouses. Also,
these models have some shortcomings. This research will discuss the
specific problems regarding the existing data security techniques.
Also, this research will present a data security approach that is
suitable for existing data warehouses and new data warehouses,
while accessing information using OLAP tools. One key advantage of
our approach is that, it will reduce the number of access checks
and therefore improve the retrieval process. The analysis should
help the DATAWAREHOUSE professionals and also for the students
relates to DATABASE field of Computers.
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