债权人转让权利的，应当通知债务人。未经通知，该转让对债务人不发生效力。
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Your boss at Certkiller .com wants you to clarify Oracle 10g. Which two statements regarding the LOGGING clause of the CREATE TABLESPACE... statement are correcte？（）
A. This clause is not valid for a temporary or undotablespace.
B. If thetablespaceis in the NOLOGGING mode， no operation on thetablespacewill generate redo.
C. Thetablespacewill be IntheNOLOGGING mode by default， if not specified while creating atablespace.
D. Thetablespace-level logging attribute can be overridden by logging specification at the table， index， materialized view， materialized view log， and partition levels.
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