Introduction of data cables Data cable is an important part of computer network model . From smartphone to supercomputer connections and wide range network uses and network models. It helps in network model in different types of topology models also. But we discuss what exactly called a data cable? How it is working with network model? Why these data cables are so important? In this guide, I will provide some information about the definitions, types, uses of data cables on network model with easy explanation of data cable covered topics. What is data cable? [Definition] A data cable is a wire that can transfer the data from one to another computer system. It connects to the ports available on the computer system. The user can transfer the data from one computer to another data cable connection. If two computers are connected then:- In according to data cable male port:- Port 1:- the male port of data cable is used to receive the data from the sender computer. Port 2:- th...
What are the disadvantages or drawbacks of the hierarchical database model?
- The hierarchical model cannot represent all the relational connectivity of the entity and their attributes of the database model.
- It can represent only basic detail of the database model which is not proper database model.
- When we using this model for the project demonstration it will so lengthy to make their chart of hierarchical model and covers so much space in the board, page of the document.
- This model is not possible to create without hierarchical characters.
- When you deleted parent entity this model is does not exist for their parent base.
- In this model if you delete any child entity so under the deleted child entity we lose those entity which has connected to deleted child entity.
In this image shows the wrong way to connect the child entity on hierarchical model which makes drawback or disadvantage of the model.
- If you create and connect the new entity to parent entity it makes massive structure and difficult to find out the connection of all entity in the model.
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