Glossary of expectations¶
Dataset objects model tabular data and include expectations with row and column semantics. Many Dataset expectations are implemented using column_map_expectation and column_aggregate_expectation decorators.
Not all expectations are currently available for each backend. A table describing available implementations per-backend is available here: Implemented Expectations.
Missing values, unique values, and types¶
Sets and ranges¶
Datetime and JSON parsing¶
File data assets reason at the file level, and the line level (for text data).