APEX 19.1 17 Use UPDATE to clean data. Add a unary relationship to a table. Remove a column.
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Fix some errors Clean up data in the ANIMALS table (change Dog to Canine). Use the “SQL Commands” feature in SQL Workshop for this and use the UPDATE command. Remove a column from a table. Add a unary constraint to the EMPLOYEES table (a referential relationship between two columns in the same table). Import the data dictionary (data model) using SQL Developer.
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