Q23.
Which of the following describes data mining?
a) Extracting part of a large-scale database according to the intended purpose and carrying out processing such as summarizing data in advance, in order to improve search
efficiency.
b) Using statistical or inference methods to find meaningful information in a large-scale
database.
c) Creating an indexed file suitable for implementing a star schema in a large-scale database.
d) Efficiently managing metadata in a large-scale database.
Q24.
When an order from a customer is entered into an online terminal, the system records the
order, allocates the inventory, and outputs shipping instructions from a printer installed in
the warehouse. If this system is described using a DFD, which of the following is the appropriate combination of words corresponding to (A)~(D)?
B
A
Order
registration
Order
C
Inventory
allocation
Inventory
Order
A
Q25.
D
Allocation
Inventory
C
D
Terminal
Order
Registered order
Printer
b)
Terminal
Registration
instruction
Allocation
instruction
Printer
c)
Customer
Order
Registered order
Warehouse
d)
Customer
Registration
instruction
Allocation
instruction
Warehouse
Practice exam 2
a)
B
Shipping
instructions
Which of the following is the name of the system that automatically settles fares for
smooth passage through tollbooths when using expressways or other toll roads?
a)
b)
c)
d)
GPS application system
ETC system
Traceability system
Credit system
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