Book Image

Oracle Advanced PL/SQL Developer Professional Guide

By : Saurabh K. Gupta
Book Image

Oracle Advanced PL/SQL Developer Professional Guide

By: Saurabh K. Gupta

Overview of this book

PL/SQL (Procedural Language/Structured Query Language) is Oracle Corporation's procedural extension language for SQL and the Oracle relational database. Server-side PL/SQL is stored and compiled in the Oracle Database and runs within the Oracle executable. With this guide Oracle developers can work towards accomplishing Oracle 11g Advanced PL/SQL Professional certification, which is the second milestone for developers working at the Associate level. The Oracle Advanced PL/SQL Developer Professional Guide helps you master advanced PL/SQL concepts. Besides the clear and precise explanation on advanced topics, it also contains example code and demonstrations, which gives a sense of application and usage to readers.The book gives a deep insight that will help transform readers from mid-level programmers to professional database developers. It aims to cover the advanced features of PL/SQL for designing and optimizing PL/SQL code.This book starts with an overview of PL/SQL as the programming database language and outlines the benefits and characteristics of the language. The book then covers the advanced features that include PL/SQL code writing using collections, tuning recommendations using result caching, implementing VPD to enforce row level security, and much more. Apart from programming, the book also dives deep into the usage of the development tool SQL Developer, employing best practices in database environments and safeguarding the vulnerable areas in PL/SQL code to avoid code injection.
Table of Contents (22 chapters)
Oracle Advanced PL/SQL Developer Professional Guide
Credits
Foreword
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 5. Implementing VPD with Fine Grained Access Control

Data security has always been a questionable criterion for a solution which promises data repository. "How much is my data secure or vulnerable?" We make a lot of effort on the concepts of data storage, fetch optimization, and its integrity to ensure and evolve a concrete database philosophy. But the last question hovers every time the database design and security paradigms are planned. The Oracle database offers multiple solutions in variety of areas to enforce best security strategies on the data. Some of the focused areas have been securing user accounts, their authentication, their roles and privileges, data encryption, data audit, and data vaulting.

In this chapter, we will discuss one of the data security features which builds up a protocol or mechanism to impose latent dynamic querying criteria on the data selection. The security feature comes up with the name Fine Grained Access Control which is also known as Virtual Private...