Sequences guarantee valid surrogate key values.%! – McqOptions

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1.	Sequences guarantee valid surrogate key values.%!
A.	True
B.	False
Answer» C.

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Oracle directly supports the definition of surrogate keys.~!
Oracle maintains a System Change Number (SCN) which is a database-wide value that is incremented by Oracle whenever database changes are made.~!
Oracle will let you define Notepad as your default editor, and whenever you type NOTEPAD, SQL*Plus will invoke Notepad.~!
You can check on the status of tables with the DESCRIBE or DESC command.%!
The left-leaning slash tells Oracle to execute whatever statement is in the buffer.%!
Sequences guarantee valid surrogate key values.%!
When you type Start FILENAME, the statement in your file will be executed automatically.%!
The default extension for SQL*Plus is .sql.%!
Oracle does NOT support a CASCADE UPDATE constraint.%!
SQL*Plus is a text editor.%!

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