This Specialization is intended for a learner with no previous coding experience seeking to develop SQL query fluency. Through four progressively more difficult SQL projects with data science ...
These notes are meant to be a refresher on SQL basics assuming that the reader already has some basic understanding of SQL. 2NF → All columns are determined only by PKs → PK only 3NF → All columns are ...
Shelley Doll finishes her coverage of SQL data types with an overview of datetime and interval data types. Learn more about the basic syntax of these standard SQL types. Datetimes and intervals are ...
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