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links-to-useful-data-munging-posts

Here are a few links to some recent data munging tips I picked up last week:

Database Relationships

  1. This is a a very quick way to look at the relationships in a database

MS Access field (column) descriptions:

  • I’m looking for methods to access the metadata related to the columns.
  • In general MS Access seems to hide these:
  • http://blogannath.blogspot.com.au/2010/03/microsoft-access-tips-tricks-list-table.html
  • “Field descriptions can be entered by the user when creating the table in design view. It is a highly encouraged practice since the description can provided valuable documentation about the purpose of each field in a table. The inability to extract the field descriptions as part of the table documentation using Access’s built-in documenter is therefore quite inconvenient.”
  • I can see there is a C# method, but I’d need visual studio or someone to compile this I suppose?
  • My mate Francis said: “you’ll have to use a script that uses the Microsoft OLE-DB, as in the stackoverflow answers. However, you don’t need Visual Studio or C# to do this, just any language that can interface with Windows COM objects. Python can do this, so this might be your excuse to finally learn it. I imagine there might even by a R library out there somewhere, although it would probably be more convenient to go the python route here.”
  • To get started with COM and python, you could do worse than to start with

Data manipulation

  1. This guy has created some custom functions that look helpful
  2. Revolutions Blog links to several Data Wrangling resources

Code editor / IDE

  1. Updates to Rstudio server are always worth checking out

Posted in  research methods Data Documentation


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