![]() ![]() how they actually correspond with each other. There must be correspondence between the three levels i.e. ![]() ![]() The three levels of DBMS architecture don't exist independently of each other. The view schema describes the end user interaction with database systems.Each view schema describes the database part that a particular user group is interested and hides the remaining database from that user group.An external schema is also known as view schema.The subschema is used to describe the different view of the database. At the external level, a database contains several schemas that sometimes called as subschema. ![]()
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