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What is schema?

Schema basically Pronounce schema, It is the structure of a database system,It described in a formal language supported by the database management system (DBMS). In the RDBMS (Relational database System) , the schema defines the tables, the fields in each table, and the Schemas are generally stored in a data dictionary . Even a schema is defined in text database language , the term is often used to refer to a graphical depiction of the database structure. 

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