Answer:
Explanation:
A relational database is designed to enforce the uniqueness of primary keys by allowing only one row with a given primary key value in a table. A foreign key is a column or a set of columns in a table whose values correspond to the values of the primary key in another table.
Network topology is the arrangement of the elements of a communication network. Network topology can be used to define or describe the arrangement of various types of telecommunication networks, including command and control radio networks, industrial fieldbusses and computer networks.
Advantages:
It is easy to handle and implement.
It is best suited for small networks.
Disadvantages:
The cable length is limited. This limits the number of stations that can be connected.
This network topology can perform well only for a limited number of nodes.
Answer:
mechanical, encryptions, communication, network admin, leadership, and teambuilding
Explanation:
When a computer restarts without a hardware power-down-power-up cycle, it is doing an update.
Answer: False
Explanation: Even if the internet service is not connected with the operating system while accessing the database, it is still on risk and can be vulnerable to get attacked. Devices of the system like USB drive can happen to have the malware which creates the risk towards database.
The computer system can get invoked with the virus or other attack while the user connects the internet afterwards when he/she is not accessing the database, these malware get stored in system once they get invoked and corrupt the system and its database even when the internet connection is not present .Thus, the statement given is false.
