You can make a column invisible during table creation

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You can make a column invisible during table creation or when you add a column to a table, and you can later alter the table to make the same column visible. References: QUESTION 35 You wish to enable an audit policy for all database users, except SYS, SYSTEM, and SCOTT. You issue the following statements: SQL> AUDIT POLICY ORA_DATABASE_PARAMETER EXCEPT SYS; SQL> AUDIT POLICY ORA_DATABASE_PARAMETER EXCEPT SYSTEM; SQL> AUDIT POLICY ORA_DATABASE_PARAMETER EXCEPT SCOTT; For which database users is the audit policy now active? A. All users except SYS B. All users except SCOTT C. All users except sys and SCOTT D. All users except sys, system, and SCOTT Correct Answer: B Section: (none) Explanation Explanation/Reference: Explanation: If you run multiple AUDIT statements on the same unified audit policy but specify different EXCEPT users, then Oracle Database uses the last exception user list, not any of the users from the preceding lists. This means the effect of the earlier AUDIT POLICY ... EXCEPT statements are overridden by the latest AUDIT POLICY ... EXCEPT statement. Note: * The ORA_DATABASE_PARAMETER policy audits commonly used Oracle Database parameter settings. By default, this policy is not enabled. * You can use the keyword ALL to audit all actions. The following example shows how to audit all actions on the HR.EMPLOYEES table, except actions by user pmulligan. Example Auditing All Actions on a Table CREATE AUDIT POLICY all_actions_on_hr_emp_pol ACTIONS ALL ON HR.EMPLOYEES;
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AUDIT POLICY all_actions_on_hr_emp_pol EXCEPT pmulligan; References: QUESTION 36 On your Oracle 12c database, you invoked SQL *Loader to load data into the EMPLOYEES table in the HR schema by issuing the following command: $> sqlldr hr/[email protected] table=employees Which two statements are true regarding the command? (Choose two.) A. It succeeds with default settings if the EMPLOYEES table belonging to HR is already defined in the database. B. It fails because no SQL *Loader data file location is specified. C. It fails if the HR user does not have the CREATE ANY DIRECTORY privilege. D. It fails because no SQL *Loader control file location is specified. Correct Answer: AC Section: (none) Explanation Explanation/Reference: Explanation: Note: * SQL*Loader is invoked when you specify the sqlldr command and, optionally, parameters that establish session characteristics. QUESTION 37 After implementing full Oracle Data Redaction, you change the default value for the NUMBER data type as follows: After changing the value, you notice that FULL redaction continues to redact numeric data with zero. What must you do to activate the new default value for numeric full redaction? A. Re-enable redaction policies that use FULL data redaction. B. Re-create redaction policies that use FULL data redaction.
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  • Fall '19
  • Oracle Database

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