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C20.0046: Database Management Systems Lecture #1 - page 5 / 40

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M.P. Johnson, DBMS, Stern/NYU, Sp2004

5

What Is a Database?

A very large, integrated collection of data.

Models real-world enterprise.

Entities (e.g., students, courses, instructors, TAs)

Relationships (e.g., Joe is taking C20.0046)

George is currently taking C20.0046

Dick is currently teaching C20.0046

Condi is currently TA-ing C20.0046 but took it last semester

A Database Management System (DBMS) is a software package designed to store and manage databases.

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