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Explanation/Reference: Explanation: Table names and column names must begin with a letter and be 1-30 characters long. Characters A-Z, a-z, 0-9, _, $ and # (legal characters but their use is discouraged). Incorrect answer: B. Non alphanumeric character such as "*" is discourage in Oracle table name. D. Table name must begin with a letter. Refer: Introduction to Oracle9i: SQL, Oracle University Study Guide, 9-4