The English word 'schema' means 1: an internal representation of the world; an organization of concepts and actions that can be revised by new information about the world; 2: a schematic or preliminary plan
The schema is the physical arrangement of the data as it appears in the DBMS. The subschema is the logical view of the data as it appears to the application program.
The schema is the physical arrangement of data.An XML schema is a description of a type of XML document, typically expressed in terms of constraints on the structure and content of documents of that...
The internal schema describes how the data will be physically stored and accessed, using the facilities provided by a particular DBMS. For example, the data might be organized so that all the...
An External Schema is to support views of data and to provide programmers with easier data access, whereas a Conceptual Schema is the schematics of the Programme. It describes the things that are...