Same column schema

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Tables with the same column names in the same order and the same delimiter, two columns or more, are grouped as having the same columns, which says nothing about being one experiment.

same_column_schema version 2

• Kind of rule: Which files go together (groups). Says which things count as the same in some respect, and so forms groups.

• What it concludes: equivalent, named same_schema_as, in respect of schema

• Reasoning: defeasible. A conclusion is usually right, and is retracted when a rule it names concludes against it.

• What it reads: files, which it sorts into groups

Is it available in this version?

Yes. The engine runs it.

What would defeat it

What this rule concludes about something is withdrawn when any of these rules concludes about the same thing:

• filesystem_noise_from_spelling: Files a computer makes on its own, such as .DS_Store or Thumbs.db, are recognized by how their names are spelled and set aside; an office program’s lock file, whose name starts ~$, is left alone, because it means somebody was at work.

• placeholder_from_entry_kind: A shortcut, or a file that claims a size but takes up no room on the disk, is taken to stand in for contents kept somewhere else.

Parameters

Parameter	Shipped value	May be	What it does
minimum_columns	2	whole number, from 1 to 1000	How many columns a table needs before its columns are treated as a signal. A single-column table matches many tables by accident.