9. A computer-implemented method of computing a data profile, comprising: generating a token regular expression based on a set of attribute values; computing candidate regular expressions based on the token regular expression; and computing a matching regular expression of the candidate regular expressions that matches the set of attribute values.
9. A computer-implemented method of computing a data profile, comprising: generating a token regular expression based on a set of attribute values; computing candidate regular expressions based on the token regular expression; and computing a matching regular expression of the candidate regular expressions that matches the set of attribute values. 15. The method of claim 9 , further comprising computing a frequent value by probabilistic approximate bounding and verification.