Data transformation includes which of the following?
Options: A process to change data from a detailed level to a summary level, A process to change data from a summary level to a detailed level, Joining data from one source into various sources of data, Separating data from one source into various sources of data
. Which of the following is true regarding Referential Integrity?
Options: Every primary-key value must match a primary-key value in an associated table
B. Every primary-key value must match a foreign-key value in an associated table
C. Every foreign-key value must match a primary-key value in an associated table
D. Every foreign-key value must match a foreign-key value in an associated table
Ans: â€“ C ,
Operating system functions may include
Options: input/output control, virtual storage, multiprogramming, All of the above
To configure the VLAN trunking protocol to communicate VLAN information between two switches, what two requirements must be met? Each end of the trunk link must be set to the IEEE 802.1e encapsulation. The VTP management domain name of both switches must be set the same. All ports on both the switches must be set as access ports. One of the two switches must be configured as a VTP server. A rollover cable is required to connect the two switches together. A router must be used to forward VTP traffic between VLANs.
Options: to create a table, defining its columns, integrity constrains, and storage allocation, to add a column/integrity constraint to a table, to redefine a column, to change a table's storage characteristics
Options: Information about a route should not be sent back in the direction from which the original update came., It splits the traffic when you have a large bus (horizon) physical network., It holds the regular updates from broadcasting to a downed link., It prevents regular update messages from reinstating a route that has gone down.
In applying the systems approach, the manager proceeds from the
Options: super system to the system to the subsystem level, system to the sulpersystem to the subsystem level, subsystem to the system to the supersystem level, supersystem to the supersystem to the system level.