Metadata

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Introduction

Metadata (n): Data about data.

Metadata includes basic file infomation, e.g.:

  • Filename
  • File ownership
  • File permissions

However, metadata can be any other piece of information about stored data, which aids a user in handling it, describing it and understanding what it contains. In the LCG context this means experimental metadata such as:

  • Data set membership
  • Data type (RAW, tracks, calibration)
  • Associated processing applications

Experimental metadata

DiRAC

If you're using DiRAC, there's a tutorial for implementing experimental metadata here: