Informix Dynamic Server 11.5 Database Administration: Managing and Optimizing Data IX221CZ

This course will teach you the basic concepts of data management within IDS. It discusses how to determine correct data types; how to create, manage and maintain tables and indexes; how the IDS optimizer works; how to manage data; and how to utilize the SET EXPLAIN feature to determine query effectiveness. The course and lab exercises are updated for Version 11.5 of Informix Dynamic Server, but is suitable for those still running previous versions of IDS.

Kurz je určen pro:

This course is designed for IDS administrators, Database administrators, and Application developers.

Předpokládané znalosti:

You should have a working knowledge of Structured Query Language (SQL).

Co se u nás naučíte:

• Select the IBM IDS data types appropriate for storing your data
• Create and maintain databases, tables, and indexes
• Estimate size and extent requirements for tables and indexes
• Create index strategies to improve performance
• Create and maintain table and index partitioning (fragmentation)
• Implement referential and entity integrity
• Manage database and table modes
• Manage violations logging
• Describe how the optimizer builds an optimal query plan
• Use the SET EXPLAIN feature to capture optimizer query plans
• Use directives and environment variables to influence the optimizer
• Optimize the query plan through the use of UPDATE STATISTICS
• Manage end-user concurrency: Use permissions and roles to manage data security
• Create and use views
• Manage smart large objects
• Create and manage triggers

Obsah:

Introduction to IDS Terminology

• Define basic Informix Dynamic Server terms
• Query the sysmaster database for information about the server
• IDS Data Types
• Identify the Informix data types
• Choose the appropriate data type for a data column

Creating Databases and Tables

• Create databases and tables
• Determine database logging and storage requirements
• Locate where the database server stores a table on disk
• Create temporary tables
• Locate where the database server stores temporary tables
• Use the system catalog tables to gather information
• Use the dbschema utility
• Altering and Deleting Databases and Tables
• Delete a database
• Delete a table
• Alter a table
• Convert a simple large object to a smart large object
• Create, Alter, and Drop Indexes
• Build an index
• Alter, drop, and rename an index
• Identify the four index characteristics

Managing and Maintaining Indexes

• Explain the benefits of indexing
• Evaluate the costs involved when indexing
• Explain the maintenance necessary with indexes
• Describe effective management of indexes
• Enable or disable indexes

Table and Index Partitioning

• List the ways to fragment a table
• Create a fragmented table
• Create a detached fragmented index
• Understand temporary fragmented table and index usage
• Maintaining Table and Index Partitioning
• Alter a fragmented table
• Alter a fragmented index
• Explain how to skip inaccessible fragments

Cost-Based Query Optimizer

Write queries that produce the following index scans: Sequential with a temporary table; -Sequential scan with filter; Key-only index scan; Index Scan: lower and upper index filters; Dynamic Hash Join; Key-first index scans

• Updating Statistics and Data Distributions
• Execute the UPDATE STATISTICS statement and explain the results
• Use the system catalogs to monitor data distributions
• Managing the Optimizer
• Understand how to set OPTCOMPIND
• Understand how to set OPT_GOAL
• Write optimizer directives to improve performance

Referential and Entity Integrity

• Explain the benefits of referential and entity integrity
• Specify default values, check constraints, and referential constraints
• Determine when constraint checking occurs

Managing Constraints

• Determine when constraint checking occurs
• Drop a constraint
• Delete and update a parent row
• Insert and update a child row
• Modes and Violation Detection
• Enable and disable constraints and indexes
• Use the filtering mode for constraints and the indexes
• Reconcile the violations recorded in the database

Concurrency Control

• Use the different concurrency controls
• Monitor the concurrency controls for lock usage
• Use the Retain Update Lock feature

Data Security

• Use the database, table, and column level privileges
• Use the GRANT and REVOKE statements
• Use role-based authorization

Views

• Create views
• Use views to present derived and aggregate data
• Use views to hide joins from users

Introduction to Stored Procedures

• Explain the purpose of stored procedures
• Explain advantages of using stored procedures

Triggers

• Create and execute a trigger
• Drop a trigger
• Use the system catalogs to access trigger information