CHAPTER 6: INTRODUCTION TO SQL © 2013 Pearson Education, Inc. Publishing as Prentice Hall 1 Modern Database Management 11 th Edition Jeffrey A. Hoffer, V. Ramesh, Heikki Topi

Chapter 6 © 2013 Pearson Education, Inc. Publishing as Prentice Hall 2 CATEGORIES OF SQL LANGUAGE  Data Definition Language (DDL)  Commands that define a database, including creating, altering, and dropping tables and establishing constraints  Data Manipulation Language (DML)  Commands that maintain and query a database  Data Control Language (DCL)  Commands that control a database, including administering privileges and committing data

3 Figure 6-4 DDL, DML, DCL, and the database development process 3 Chapter 6 © 2013 Pearson Education, Inc. Publishing as Prentice Hall

4 Figure 6-10 SQL statement processing order (based on van der Lans, 2006 p.100) 4 Chapter 6 © 2013 Pearson Education, Inc. Publishing as Prentice Hall

5 Copyright © 2013 Pearson Education, Inc. Publishing as Prentice Hall