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Informix Dynamic Server 11.50 Fundamentals Exam 555 certification preparation, Part 6: Data concurrency

Joo Guan Yap (yapjg@sg.ibm.com), Advanced Support Engineer, IBM
Joo Guan graduated from Nanyang University of Singapore with a Bachelor of Applied Science (Computer engineering) Degree in 1996 and was involved in various IT development projects. He joined IBM Informix support in 2001 and is now involved in Advanced Support work.

Summary:  This tutorial is the sixth in a series of nine tutorials designed to help you become familiar with all the different aspects of IBM® Informix® Dynamic Server (IDS) and help you get ready for the IDS Fundamentals Certification exam. In this part, which corresponds with Part 6 of the exam, gain an understanding of the data concurrency mechanisms in IDS.

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Date:  13 Aug 2009
Level:  Intermediate
PDF:  A4 and Letter (65 KB | 25 pages)Get Adobe® Reader®

Activity:  10000 views
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Before you start

About this series

This complimentary series of nine tutorials has been developed to help you prepare for the IBM Informix Dynamic Server 11.50 Fundamentals certification exam (555). This certification exam will test your knowledge of entry-level administration of IDS 11.50, including basic SQL (Structured Query Language), how to install IDS 11.50, how to create databases and database objects, security, transaction isolation, backup and recovery procedures, and data replication technologies and purposes. These tutorials provide a solid base for each section of the exam. However, you should not rely on these tutorials as your only preparation for the exam.

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About this tutorial

This tutorial describes the locking mechanism in IBM Informix Dynamic Server 11.50. It discusses isolation levels and their effects; and it also introduces you to the monitoring of isolation levels and locks.

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Objectives

At the end of the tutorial, you should be able to:

  • Understand the lock management in IDS
  • Identify isolation levels and their effects

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Prerequisites

This tutorial is written for users with basic knowledge of Structured Query Language (SQL).

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System requirements

To understand and test the concepts discussed in this tutorial, you need a running instance of IDS 11.50.

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TutorialTitle=Informix Dynamic Server 11.50 Fundamentals Exam 555 certification preparation, Part 6: Data concurrency
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