Describe the role of social media sites in digital communication technology? Social media sites provides many types of ways to share and allow to send different types of data such as:- text data through file of text document or direct message text to the chat box directly to the user by typing, the audio clip can be recorded to send the file or direct voice calling system allows to connect with the user when the user is online. Similarly, video data can be shared to the user in the form of a file and directly connected in the form of video call or video chatting. The image file can be used to share the information object which is still object information including text data depending on the creators. The social media sites provide the services of connecting users through the data communication system using the different types of option such as:- chatting using text messages, audio clipping sends methods, recorded current video through the camera or direct video call or chat option, voi...
What is the role of the data model in database management system [DBMS]?
Role of the data model in DBMS
- Data model is structure in a graphical form to represent the database look like in their structure.
- Data model represents the organization structure in a graphical form where the database has so many relationships of the entity.
- Entity is a group of data, where the data is in a relation to another data.
- Entity is also called group of information, where the information is meaningful sentence in a description or character type data.
- The component of entity such as name, gender, address etc. are called attributes of the entity.
- You can connect the entity to entity with their properties if the properties of both entities are matched to each other.
The image reference shows you the sales manager is connected to the sales employee with their property of the Sales Department. There are three entities in the structure or model of the database are Sales Manager and Sale employee are their attribute is Sales department.
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