Logical Data Independence
- Changing the logical schema (conceptual level) without changing the external schema (view level) is called logical data independence.
- It is used to keep the external schema separate from the logical schema.
- If we make any changes at the conceptual level of data, it does not affect the view level.
- This happens at the user interface level.
- For example, it is possible to add or delete new entities, attributes to the conceptual schema without making any changes to the external schema.
What is Data Independence in DBMS?
Data independence is a property of a database management system by which we can change the database schema at one level of the database system without changing the database schema at the next higher level. In this article, we will learn in full detail about data independence and will also see its types. If you read it completely, you will understand it easily.
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