Keyword Search:
www.openlinksw.com
docs.openlinksw.com

Book Home

Contents
Preface

Overview
Installation Guide
Quick Start & Tours
Sample ODBC & JDBC Applications
Conceptual Overview
Server Administration
Virtuoso Cluster Operation
Conductor Administration Interface
Data Access Interfaces
SQL Reference
Virtuoso Cluster Programming
SQL Procedure Language Guide
Database Event Hooks
Database Startup
Database Connections
Database Logins
Database Disconnections
Database Shutdown
SQL Statement Preparation
SQL Parse Tree
WebDAV Logins
Associating Auxiliary Data With A Connection
Data Replication, Synchronization and Transformation Services
Web Application Development
XML Support
RDF Database and SPARQL
Web Services
Runtime Hosting
Internet Services
Free Text Search
TPC C Benchmark Kit
Using Virtuoso with Tuxedo
Appendix
Virtuoso Functions Guide

Abstract

Virtuoso provides a number of hooks that enable you to traps events within the database such as startup, shutdown, connection, disconnection and SQL compilation events.

Table of Contents

13.1. Database Startup
13.2. Database Connections
13.3. Database Logins
13.4. Database Disconnections
13.5. Database Shutdown
13.6. SQL Statement Preparation
13.7. SQL Parse Tree
13.7.1. Notes on Special Features of the Parse Tree
13.7.2. SQL Security and Parse Trees
13.7.3. Debugging with Parse Trees
13.8. WebDAV Logins
13.9. Associating Auxiliary Data With A Connection

Virtuoso allows the dba to set hooks for various events, such as:

These events are intercepted by calling a SQL procedure if one is defined.

In the following we will examine each hook in the context of a simplified database security system. The system will record all logins and logouts and will enforce custom security rules on reading a specific application table.