Develop PL/SQL Program Units

PRB10g - Oracle 10g:Develop PL/SQL Program Units

Descrição:

his course is designed for developers with basic PL/SQL and SQL language skills. In class students learn to develop, execute, and manage PL\SQL stored program units like procedures, functions, packages, and database triggers. Student also learn to manage object dependencies and recompilation of invalid objects. This course also describes the characteristics and ways of manipulation of large objects. Students are introduced to the utilization of some of the Oracle-supplied packages. This course counts towards the Hands-on course requirement for the Oracle Database 10g Administrator Certification. Only instructor-led inclass or instructor-led online formats of this course will meet the Certification Hands-on Requirement. Self Study CD-Rom and Knowledge Center courses are excellent study and reference tools but DO NOT meet the Hands-on Requirement for certification. Tópicos:

• Write dynamic SQL for more coding flexibility
• Design PL/SQL code for predefined data types, local sub-programs, additional programs and standardized constants and exceptions
• Use the compiler warnings infrastructure
• Manipulate large objects
• Create triggers to solve business challenges
• Manage dependencies between PL/SQL sub-programs
• Schedule PL/SQL jobs to run independently
• Create stored procedures and functions
• Design PL/SQL packages to group and contain related constructs
• Create overloaded package sub-programs for more flexibility
• Categorize the Oracle supplied PL/SQL packages
• Use the Oracle supplied PL/SQL packages to generate screen output, file output, web output, and mail output

Tópicos do Curso:

Introduction

• Modularize program development with PL/SQL blocks
• Describe the Human Resources (HR) data set
• Show the PL/SQL environment (PLSQL block / PLSQL engine / Oracle server and statement executor)
• Show the PL/SQL environment (PLSQL block / PLSQL engine / Oracle server and statement executor)
• Code PL/SQL in the SQL*Plus environment
• Code PL/SQL in the JDeveloper environment
• Create and invoke simple procedures and functions

Creating Stored Procedures

• Describe the block structure for PL/SQL stored procedures
• Invoke a stored procedure/function from different tools
• Call a stored procedure with host variables from SQL*Plus, Forms, Java, C, etc
• Invoke a stored procedure from an anonymous block or another stored procedure
• List the CREATE OR REPLACE PROCEDURE syntax
• Identify the development steps for creating a stored procedure
• Use the SHOW ERRORS command
• View source code in the USER_SOURCE dictionary view

Creating Stored Functions

• Describe stored functions
• List the CREATE OR REPLACE FUNCTION syntax
• Identify the steps to create a stored function
• Execute a stored function
• Identify the advantages of using stored functions in SQL statements
• Identify the restrictions of calling functions from SQL statements
• Remove a function

Creating Packages

• List the advantages of packages
• Describe packages
• Show the components of a package Diagram the visibility of constructs within a package
• Develop a package
• Create the package specification
• Declare public constructs
• Create the package body

Using More Package Concepts

• List the benefits of overloading
• Show overloading example
• Use forward declarations in packages
• Create a one-time only procedure (package code initialization)
• List the restrictions on package functions used in SQL
• Encapsulate code in a package demonstration
• Invoke a user-defined package function from a SQL statement
• Utilize the persistent state of package variables

Utilizing Oracle Supplied Packages in Application Development

• List the various uses for the Oracle supplied packages
• Reuse pre-packaged code to complete various tasks from developer to DBA purposes
• Use the DESCRIBE command to view the package specifications and overloading
• Explain how DBMS_OUTPUT works (in conjunction with SET SERVEROUPUT ON)
• Interact with operating system files with UTL_MAIL
• Describe file processing with UTL_FILE
• Review UTL_FILE routines and exceptions
• Use UTL_FILE to generate a report to a file

Dynamic SQL and Metadata

• Describe using native dynamic SQL
• List the execution flow of SQL
• Show the syntax for the EXECUTE IMMEDIATE statement for native dynamic SQL
• Create a procedure to generate native dynamic SQL using EXECUTE IMMEDIATE to delete rows from a table
• Describe the DBMS_SQL package
• Provide an example of DBMS_SQL
• List the advantages of using Native Dynamic SQL Over the DBMS_SQL package

Design Considerations for PL/SQL Code

• Standardize constants with a constant package
• Standardize exceptions with an exception handling package
• Introduce local sub-programs
• Use local sub-programs
• Track run time errors with an exception package
• Describe the NOCOPY compiler hint
• Use the NOCOPY compiler hint
• Explain the effects of NOCOPY

Managing Dependencies

• Define dependent and referenced objects
• Diagram dependencies with code, views, procedures, and tables
• Manage local dependencies between a procedure, view, and a table
• Analyze a scenario of local dependencies
• Display direct dependencies using the USER_DEPENDENCIES view
• Run the UTL_DTREE.SQL script to create objects that enable you to view direct and indirect dependencies
• Predict the effects of changes on dependent objects

Manipulating Large Objects

• Describe a LOB object
• Diagram the anatomy of a LOB
• Manage and list the features on internal LOBs
• Describe, manage, and secure BFILEs
• Create and use the DIRECTORY object to access and use BFILEs
• Prepare BFILEs for usage
• Use the BFILENAME function to load BFILEs
• Describe the DBMS_LOB package

Creating Triggers

• Describe the different types of triggers and how they execute
• List the benefits and guidelines of using database triggers
• Show how triggers are executed with a basic database trigger example
• Show syntax and create DML triggers, and list the DML trigger components
• Explain the firing sequence of triggers
• Create a DML statement and row level triggers
• Use the OLD and NEW qualifiers to reference column values
• Use conditional predicates with triggers

Applications for Triggers

• Describe the different types of triggers and how they execute
• List the benefits and guidelines of using database triggers
• Show a LOGON and LOGOFF trigger example
• Use the CALL statement to call a stored procedure from a trigger
• Define a mutating table
• Show a mutating table code example
• Describe business application scenarios for implementing with triggers
• Describe the privileges required to manage triggers

Understanding and Influencing the PL/SQL Compiler

• Describe the features of the PL/SQL compiler in Oracle Database 10g
• List the features of native compilation
• Identify the 3 parameters used to influence compilation (PLSQL_CODE_TYPE, PLSQL_DEBUG, PLSQL_OPTIMIZE_LEVEL)
• Show how to set the parameters
• Describe the dictionary view used to see how code is compiled (USER_PLSQL_OBJECTS)
• Change the parameter settings, recompile code, and view the results
• Describe the compiler warning infrastructure in Oracle Database 10g
• List the steps used in setting compiler warning levels