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Lecture Fundamentals of Database Systems - Chapter 2: Database system concepts and architecture

In this chapter presenting the terminology and basic concepts that will be used throughout the lecture. This chapter discusses data models and defines the concepts of schemas and instances, which are fundamental to the study of database systems, discuss the three-schema DBMS architecture, provides a user’s perspective on what a DBMS is supposed to do, describe the types of interfaces and languages that are typically provided by a DBMS,. | Fundamentals of DATABASE SYSTEMS FOURTH E D I T I o N ELMASRI NAVATHE Chapter 2 Database System Concepts and Architecture PEARSON Addison Wesley Copyright 2004 Pearson Education Inc. Data Models Data Model A set of concepts to describe the structure of a database and certain constraints that the database should obey. Data Model Operations Operations for specifying database retrievals and updates by referring to the concepts of the data model. Operations on the data model may include basic operations and user-defined operations. Elmasri and Navathe Fundamentals of Database Systems Fourth Edition Copyright 2004 Pearson Education Inc. Slide .