Answer: (D) Database design follows the twelve principles proffered by Dr. Edgar F. Codd
Explanation:
The relational database is basically based on the relational model of the data which is proposed by the Dr Edger F. codd and he mainly introduced the twelve basics principle of the database designing in the database system. He also contributed various valuable principle in the computer science.
The twelve principle are:
- The first rule of the relational database is the information rule as it represented all data or information
- Independence of the integrity
- Viewing various updating rule
- Logically treatment of various NULL value
- Independence of the physical database
- Distribution in-dependency
- Various delete, insert and update rules
- The overall logical description of the database are basically stored in the database directory
- There is no subversion rule
- There is guarantee accessing rule
- Proper rule for data language
- The relational database level actions
Answer:
The network layer is the layer is the layer 3 of the seven layer Open System Interconnect (OSI model) which functions as packet forwarder for the intermediate routers by implementing technologies used for switching that provides virtual circuits' logical path
The function of the network layer includes;
1) Routing and forwarding of packets to destination which enables connectionless communication
2) Enabling internetworking
3) Hierarchical host (IP) addressing
4) Sequencing of packets
5) Handling of errors
6) Control of network congestion to prevent the collapse of the network
Explanation:
Answer:
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Explanation:
look for the words
Answer:
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Explanation:
