【单选题】You create a Web Form that displays a GridView. The GridViews data source is a DataSet named dsOrders. The DataSet contains two DataTables named Orders and OrderDetails. You create a relation between ...
A.
Ensure that the child column and the parent column have the same names.
B.
Ensure that the child table and the parent table have the same names.
C.
Ensure that the child column and the parent column have the same data types.
D.
Ensure that each row in the child table has a corresponding row in the parent table.
E.
Ensure that the tables have an explicit relationship defined by a foreign key constraint in the database.
【单选题】You have two switches connected together with two crossover cables for redundancy, and STP is disabled. Which of the following will happen between the switches?
A.
The routing tables on the switches will not update.
B.
The MAC forward/filter table will not update on the switch.
C.
Broadcast storms will occur on the switched network.
D.
The switches will automatically load-balance between the two links.
【单选题】You discover that your Recycle Bin contains two tables with the same name, MY_TABLE. You also have a table named MY_TABLE in your schema. You execute the following statement: FLASHBACK TABLE my_table ...
A.
One of the tables is recovered from the Recycle Bin using a First In First Out (FIFO) approach.
B.
One of the tables is recovered from the Recycle Bin using a Last In First Out (LIFO) approach.
C.
Both the tables are recovered from the Recycle Bin with one table renamed to MY_TABLE2 and the other to a system-generated name.
D.
None of the tables are recovered from the Recycle Bin, and the statement returns an error.