Database Management System2080.15 marksThree-Schema Architecture and Data Independence
Define data independence. Explain three-schema architecture.
Define data independence. Explain three-schema architecture. [5]
--- Data independence is the capacity to change the schema at one level of a database system without having to change the schema at the next higher level. There are two types of data independence: It is the capacity to change the conceptual schema without having to change the external schemas or ...