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Analysts may apply a variety of techniques, referred to as exploratory data analysis, to begin understanding the messages contained within the obtained data. [30] The process of data exploration may result in additional data cleaning or additional requests for data; thus, the initialization of the iterative phases mentioned in the lead ...
Business analyst word cloud indicating some aspects of the business analyst profession (Flickr) A business analyst (BA) is a person who processes, interprets and documents business processes, products, services and software through analysis of data.
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...
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Machine learning and data mining often employ the same methods and overlap significantly, but while machine learning focuses on prediction, based on known properties learned from the training data, data mining focuses on the discovery of (previously) unknown properties in the data (this is the analysis step of knowledge discovery in databases).
A chartist (also known as a technical trader or technical analyst) is one who utilizes charts to assess patterns of activity that might be helpful in making predictions. Most commonly, chartists use technical analysis in the financial world to evaluate financial securities. [1]