The database to use is SQL Developer
The management of “Just Lee Books” has approved implementing anew commission policy and benefits plan for the account managers.The following changes need to be made to the existing database:
Two new columns must be added to the ACCTMANAGER table: one toindicate the commission classification assigned to each employeeand another to contain each employee’s benefit code. The commissionclassification column should be able to store integers up to amaximum value of 999 and be named Commission_ID. The value of theCommission_ID column should be set to a value of 11 automaticallyif no value is provided when a row
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