[单选] Which statement is true regarding synonyms?（）

A . Synonyms can be created only for a table
B . Synonyms are used to reference only those tables that are owned by another user
C . A public synonym and a private synonym can exist with the same name for the same table
D . The DROP SYNONYM statement removes the synonym, and the table on which the synonym has been created becomes invalid

A customer has purchased an IBM BladeCenter H chassis and needs the following servers： --Two HS21 blade servers each with 8GB memory and 2 drives --Two HS21 blade servers each with 24GB memory and 2 drives --Two LS21 blade servers each with 2GB memory and 2 Hot-Swap SCSI drives How many total server bays will be required for this configuration？（） 6。 8。 10。 12。通过更换可换接头，可改变内径百分表的（）。量程。精度。结构。用途。 A stock exchange needs extremely low latency in their disk subsystem. Which disk storage technology is mostlikely to fulfill their need?（） SSD。 SSA。 SAS。 SAN。 What is the minimum amount of memory required for a new LPAR to be built via NIM on AIX 6.1？（） 128M。 256M。 512M。 1024M。非侵染性病害的特点。 Which statement is true regarding synonyms?（）

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[单选] Which statement is true regarding synonyms?（）

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