Question

How would you define a relational database ?

Answer 1

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