GJ! Keep up the good work!
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:
General process of creating a data flow diagram:
Data flow diagram are used to represents the flow of data graphically and it is divided into physical and logical parameters. For creating the data flow diagram the steps involved are:
- Select the data and name the DFD.
- In DFD add the entity for start the process and add that process in data flow diagram.
- Add a data store and continuous adding that data into DFD.
- Now, adding the data flow in DFD and name the data.
To move from layout view to form view, tap or click the _____ button on the access status bar.
View button
Data sheet
Data sheet is what an excel sheet is so it’s the same thing
