Difference among a database schema and a database state, Database Management System

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What is the difference among a database schema and a database state?

The collection of information stored in database at particular moment in time is known as database state although the whole design of database is known as database schema.

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The PROJECT operation The project operation is used to choose the records with specified attributes as discarding the others based on some related criteria. This is denotes as ∏

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Explain three main attributes of data.

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Create Student DB and perform delete operation? STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (section identifier, co

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