Many tools can do interactive data analysis. I can list some: R, Matlab, esProc, SAS, SPSS, Excel, and SQL,etc. But for easy to use, esProc is the best. I can list you some reasons.
SQL is the most widely used structured data query and analysis language. Tts syntax is close to that natural language and easy for programmers to learn. But not easy for analysts without high technical background. Besides, it can't make three-like step by step computing. Excel is liked by many people due to its convenience. But for complex data computing and analysis, Excel is not great enough. R is good for its agile syntax but requires strong technical background. Similar to R, Matlab also has good scalability but needs high strong technical background. SAS has powerful capabilities in chart plotting for in-depth applications but is still less friendly than other analysis software. SPSS has a powerful graphic user interface. But its syntax is fairly poor and is incapable for the free analysis other than the fixed algorithms. The menu-style interface is inconvenient for stepwise computation.
esProc is a script with an expert in interactive analysis on structured data. It supports free data analysis, requiring relatively low degree of technical background. Its syntax is agile and easy-to-use. Excel-style interface makes it good for complex data processing and step by step computing. Also, it doesn't need pre-modeling. Only disadvantage is lacking of the fixed algorithm and functions specific to some industries, such as correlation analysis or regression analysis.
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Warehousing term is used whenever it is about something to be stored in great quantity with proper categorisation for easy accessibility in need; same applies for data warehouse. It only gets in dept in case of data; relevancy, timeliness and analysis followed by reporting are of prime importance. Source(s): http://bit.ly/153rq7v
Data marts are created for various reasons. They're easy to access, easy to create, create collective views for groups, is not cluttered, and cost less to implement than a data warehouse.
it can show data easy to compare
A data table is used to organize and display information that are gathered.
A graph is similar to a data table in that they both present the data. A difference is that the graph is more of a visual representation. Often, trends in the data are easy to recognize in the visual representation of the graph.