Triggers in Oracle

In this course, we will explore, in-depth, the DML and System triggers available with Oracle. We will discuss the use cases and guidance for trigger usage.
Course info
Rating
(20)
Level
Intermediate
Updated
Oct 16, 2015
Duration
2h 45m
Table of contents
Overview
Introduction 1m Why Care to Learn? 3m Triggers Overview 3m Course Overview 2m Prerequisites 1m Audience 1m Tools 1m Summary 1m
Understanding Triggers
Module Overview 2m Row and Statement Triggers and Timing Points 4m Creating Triggers 5m Demo: Creating Triggers and Order of Execution 4m Trigger Conditions and Conditional Predicates 6m Demo: Trigger Conditions and Conditional Predicates 7m Enabling/Disabling Triggers and Trigger Dependencies 5m Demo:Enabling/Disabling Triggers and Trigger Dependencies 2m Summary 2m
Trigger Order & Compound Triggers
Module Overview 2m Follows and Precedes Clauses 2m Demo: Follows Clause 3m Compound Triggers 6m Demo: Compound Triggers 7m Summary 1m
Handling Trigger Exceptions & Avoiding Mutating Table Error
Module Overview 1m Exception Flow & Side Effects 3m Demo: Exception Flow & Side Effects 9m Mutating Table Error 3m Demo: Solving Mutating Table Error 11m Summary 2m
Understanding Trigger Scope
Module Overview 2m System Triggers 3m System Trigger Events 6m Event Attributes 2m Demo: Database & Schema Triggers 5m Instead of Create Triggers 3m Demo: Instead of Create Triggers 2m Instead of DML Triggers 6m Demo: Instead of DML Triggers 8m Summary 1m
Trigger Applications
Module Overview 1m Value-based Auditing 2m Demo: Value-based Auditing 4m Logging & Autonomous Triggers 1m Demo: Logging & Autonomous Triggers 3m Automating Maintenance Tasks 1m Enforcing Referential Integrity 1m Demo: Enforcing Referential Integrity 4m Publishing Information 1m DML Against Views 0m Enforcing Complex Security Checks 1m Enforcing Complex Check Constraints 0m Demo: Enforcing Complex Check Constraints 2m Guidelines for Trigger Usage 3m Summary 2m
Description
Course info
Rating
(20)
Level
Intermediate
Updated
Oct 16, 2015
Duration
2h 45m
Description

In this course, we will talk extensively about Oracle Triggers. Triggers help us centralize table validations at the lowest level along with providing support for auditing and logging.

We will take an in-depth look at how to define:

  • Triggers
  • Trigger types
  • Row level triggers
  • Statement level triggers
  • Mutating triggers
We will take an in-depth look at both DML triggers as well as System triggers. We will also talk about Compound Triggers and look at various scenarios where triggers can be useful.

Course FAQ
Course FAQ
What are Oracle triggers?

Oracle triggers let you create procedures that are automatically executed when a specific action or event occurs. So if an INSERT, UPDATE, or DELETE statement is issued against a specific table, it will trigger a certain other procedure to be executed.

What types of triggers are available in Oracle?

There are 5 different types of Oracle triggers:

  1. Statement triggers: DML statements on a specific table/view
  2. Row triggers: executes for each row affected by a DML statement
  3. INSTEAD OF triggers: executes on views run rather than the issuing statement
  4. User event triggers: DDL statements like CREATE and ALTER, user LOGON, etc.
  5. System event triggers: database startup, shutdown, server erros, etc.
What will I learn in this course?

You will learn:

  • What Oracle triggers are and why use them
  • Row and Statement triggers
  • How to create triggers
  • Trigger dependencies
  • Trigger order and compound triggers
  • Trigger exceptions
  • Trigger scope
  • Trigger applications
  • Much more
What are the prerequisites to this course?

The only prerequisite for this course is to have some basic Oracle PL/SQL knowledge. Check out this course if you want a refresher, or if you still need to learn Oracle PL/SQL Fundamentals.

Who is this course for?

This course is for anyone who wants to learn how to set up triggers in Oracle; both DML triggers and system triggers. If you are an Oracle programmer, you will definitely find this course beneficial.

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