What is true about updates through a view? () A. You cannot update a view with group functions.B. When you update a view group functions are automatically computed.C. When you update a view only the constraints on the underlying table will be in effect.D. When you update a view the constraints on the views always override the constraints on the underlying tables.
What is true about updates through a view? ()
A. You cannot update a view with group functions.
B. When you update a view group functions are automatically computed.
C. When you update a view only the constraints on the underlying table will be in effect.
D. When you update a view the constraints on the views always override the constraints on the underlying tables.
相关考题：
—_______. —About 25℃.A.The temperature may be higher.B.How is the weather today?C.What’s the temperature today?D.What is the weather forecast say?
– What’s the temperature today –( ) . A.Nice and coolB.The weather forecast says it’s fineC.About 18 degreesD. Sure, it’s sunny
What is the most likely reason for the dispartly between the actual network numbers at the branches and the routes in the routing table on Gateway－Router?() A. Branch-Router2 is configured to send both RIPv1 and RIPv2 updates.B. Gateway-Router is configured to only receive RIPv2 updates.C. Gateway-router is configured to receive only RIPv1 updates.D. Branch-Router1 is configured to only send RIPv1 updates
What is themostlikelyreasonforthedispartlybetweentheactualnetworknumbersatthebranchesandtheroutesintheroutingtableonGateway－Router?() A.Branch-Router2isconfiguredtosendbothRIPv1andRIPv2updates.B.Gateway-RouterisconfiguredtoonlyreceiveRIPv2updates.C.Gateway-routerisconfiguredtoreceiveonlyRIPv1updates.D.Branch-Router1isconfiguredtoonlysendRIPv1updates.
已知a = np.arange（12) c = a.view（) 那么c is a 的结果为True.