Database
On 29/02/2012 12:45, R. Michael Weylandt wrote:
I don't use Access but my general impression is that the advantages it brings will be similar to those brought by any other database: performance rather than ability -- they are both Turing complete after all, after some trickery on the SQL end. Databases allow much larger data sets than R currently does and often
But not much larger in Access than 64-bit R allows: Access is a pretty limited system.
allow faster queries -- some would argue the SQL syntax is clearer for some subsetting operations, but that's perhaps a function of familiarity. For the task you describe, it should be elementary in both platforms and I'd just use whichever one the data was already in. For more substantive data analysis, you almost certainly want to use R. Others with Access experience (or more SQL) can add more.
Access does not bring the performance benefits of more advanced DBMS engines: on Windows I would certainly recommend using SQL Server Express (or whatever it is currently called) instead. If you want to use a DBMS to supplement R (as per the R Data Import/Export manual) I would use MySQL or SQLite.
Michael On Tue, Feb 28, 2012 at 6:06 PM, Trying To learn again <tryingtolearnagain at gmail.com> wrote:
Hi all, I?m new using Access. I see that many things that you can do on Access you can do on CRAN R but not on contrary. My question is: Is there any manual with examples comparing how to do data base analysis on access and making the same on CRAN R? Imagine I want to compare two columns "Name" of two different data bases. I want to see if there are "identical" names on both files.
'files'? Where are the data? If you mean different tables in one Access database then I would still do this in R via RODBC.
It is better to use Access? Or it is better to use cran r (importing data and work on CRAN R)? This is only an example. I know CRAN R is more specialized on statistics and data analysis but I ?m trying not to learn Access and SQL so on.
In which case you can simply use RODBC to import tables to R and work there.
I cannot explain better I hope you comprehed me.
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Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595