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In the context of a database management system, data independence is the feature that allows the schema of one layer of the database system to be changed without any impact on the schema of the next higher level of the database system.
Data independence is the type of data transparency that matters for a centralized DBMS. [1] It refers to the immunity of user applications to changes made in the definition and organization of data. Application programs should not, ideally, be exposed to details of data representation and storage.
Data Independence is the property of DBMS that helps you to change the Database schema at one level of a database system without requiring to change the schema at the next higher level. Two levels of data independence are 1) Physical and 2) Logical; Physical data independence helps you to separate conceptual levels from the internal/physical levels
Data Independence therefore refers to the nature whereby one can change the structure of the database without having to change its implementation or data. There are two types of data independence: The first type is the Physical one as well as the second type is the Logical one.
Physical Data Independence is defined as the ability to make changes in the structure of the lowest level of the Database Management System (DBMS) without affecting the higher-level schemas. Hence, modification in the Physical level should not result in any changes in the Logical or View levels.
Data independence refers characteristic of being able to modify the schema at one level of the database system without altering the schema at the next higher level. There are two types of data independence:
Data independence is the ability to modify one level of a DBMS without affecting the next higher level's data structure or access methods. It's of two types, physical and logical.
Data Independence. A database system normally contains a lot of data in addition to users’ data. For example, it stores data about data, known as metadata, to locate and retrieve data easily. It is rather difficult to modify or update a set of metadata once it is stored in the database.
Data independence in DBMS refers to a database system's capacity to change the schema at one level without requiring changes at the next higher level. This concept is crucial for ensuring that the database can evolve without affecting the applications or User Interfaces (UI) that interact with it.
Data independence empowers developers and database administrators to modify the database without disrupting the applications built upon it. It is a powerful concept that brings flexibility, adaptability, and ease of maintenance to the world of data management.