【多选题】
A <{p}>Duplication can be done by having the auxiliary database instance pull backup sets from the<{br/}>target database instance.<{br/}><{/p}>
B <{p}>A connection to an auxiliary instance is always required.<{br/}><{/p}>
C <{p}>A subset of the target database can be duplicated.<{br/}><{/p}>
D <{p}>A new DBID is always created for the duplicated database.<{br/}><{/p}>
E <{p}>A connection to the recovery catalog instance is always required.<{br/}><{/p}>
F <{p}>A backup of the target database is always required.<{br/}><{/p}>
G <{p}>Duplication can be done by having the target database instance push copies to the auxiliary<{br/}>database instance.<{br/}><{/p}>
H <{p}>A connection to the target database instance is always required.<{br/}><{/p}>
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