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QUERY INVERSION TO FIND DATA PROVENANCE
Day by day data is increasing, and most of the data stored in a database after manual
transformations and derivations. Scientists can facilitate data intensive applications to study
and understand the behaviour of a complex system. In a data intensive application, a scientific
model facilitates raw data products to produce new data products and that data is collected
from various sources such as physical, geological, environmental, chemical and biological etc.
Based on the generated output, it is important to have the ability of tracing an output data
product back to its source values if that particular output seems to have an unexpected value.
Data provenance helps scientists to investigate the origin of an unexpected value. In this paper
our aim is to find a reason behind the unexpected value from a database using query inversion
and we are going to propose some hypothesis to make an inverse query for complex aggregation
function and multiple relationship (join, set operation) function.