Data Dictionary

It improves understanding of data for data processing tasks and helps make research more reproducible. It contains the list and description of variables, their structure, relationships, a insights gained from them.

Components of a data dictionary:

• Variable ID(code, or column name, machine readble)
• Variable Name(human readable)
  • May include synonyms for variable name
• Variable definition
• Data type, and value restrictions, or list of allowed values
• Unite of measurement