Assertion: column's data | /r/HasProperty | read
Facets:
value: from disk
type: LOCATION
Source sentences:
text: Columnar databases boost performance by reducing the amount of data that needs to be read from disk, both by efficiently compressing the similar columnar data and by reading only the data necessary to answer the query.
text: The greater adjacent compression achieved, the more difficult random-access may become, as data might need to be uncompressed to be read.