Which of the following resources can be referenced in the LOCK statement?（）

A.Control Center
B.Development Center
C.Developer Workbench
D.Stored Procedure Builder

A.When the data is naturally tabular
B.When the number of nodes are volatile
C.When the data by nature has sparse attributes
D.When the data is of low volume and requires a complex star-schema topology

A.What is this customers address?
B.Does this customer have any unpaid bills?
C.What is the balance in this customers account?
D.What are the total sales for each of the last 6 months?