Book Image

IBM DB2 9.7 Advanced Application Developer Cookbook

Book Image

IBM DB2 9.7 Advanced Application Developer Cookbook

Overview of this book

With lots of new features, DB2 9.7 delivers one the best relational database systems in the market. DB2 pureXML optimizes Web 2.0 and SOA applications. DB2 LUW database software offers industry leading performance, scale, and reliability on your choice of platform on various Linux distributions, leading Unix Systems like AIX, HP-UX and Solaris and MS Windows platforms. This DB2 9.7 Advanced Application Developer Cookbook will provide an in-depth quick reference during any application's design and development. This practical cookbook focuses on advanced application development areas that include performance tips and the most useful DB2 features that help in designing high quality applications. This book dives deep into tips and tricks for optimized application performance. With this book you will learn how to use various DB2 features in database applications in an interactive way.
Table of Contents (15 chapters)
IBM DB2 9.7 Advanced Application Developer Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface

Granting and revoking object privileges


Privileges are the next level of security mechanism that can be implemented at database object level. A privilege determines the permission of performing a task on an object. A user who creates an object in the database implicitly acquires all the privileges associated with that object. Privileges can be divided into three categories:

  1. 1. Individual object privileges: Such privileges allow a user to perform different actions on the object. These privileges don't allow a user to grant or revoke similar privileges to or from other users. Example of such privileges can be: SELECT, EXECUTE, UPDATE, and so on. Only a user with CONTROL, ACCESSCTRL, or SECADM can grant these privileges to another user.

  2. 2. CONTROL privilege: This privilege allows users to grant and revoke privileges to or from other users. The CONTROL privilege is implicitly granted to the creator on the newly-created tables, indexes, and packages. It is implicitly granted on newly-created...