Extract the metadata of a source
Further, choose Sample data or Complete data to extract on the first 1,000 rows or on the entire table respectively
Objective
To extract the metadata of a source for the first time, simply select a source object on the left-hand panel. This will parse a sample of 1,000 rows from the source to obtain the following information:
- attribute names
- attribute types
- attribute minimum and maximum values
- attribute card., i.e. the number of unique values in the sample
- attribute null values
To extract the metadata of a source again, you can click on the Extract Metadata button at the top right. Further, choose Sample data or Complete data to extract on the first 1,000 rows or on the entire table respectively.
A complete metadata extraction can take a while depending on the size of the selected table 💡
If your metadata extraction fails, investigate why by checking out the logs in the Jobs tab in the Connectors.
Once the meta are extracted, you can start working to set standard structure formats for your data by adding blueprint rules to any attribute.
Learn how to add blueprint rules
Go further
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