ORACLE SQLPLSQL

ORACLE SQLPLSQL Overview

Online Guru Technologies’s Oracle SQLPLSQL training running with industry experts  according to industry requirements and demands.

This training helps you crack the interview and clear the certification as well.

Here you will get all class videos lifetime access.

Even after completion of course 24/7 support is provided for clearing interviews and certification.

By the end of the course a separate class is scheduled for interview questions and answers.

Online Guru Technologies will provide a platform to work for real time projects.

LESSON 1 – 1: Review of Basic SQL and history of SQL:

Intro to the class
History of SQL
Evolution of SQL

Exercise – declarative SQL

Review of pubs database

SQL constructs:

  • Select
  • Project
  • Join

Describing Oracle tables

Exercise – investigate the pubs database

Restricting row returns
Where clause

Exercise – write a sample query in the pubs database

Complex Boolean logic in SQL
ROWID restrictions

Exercise – write a sample query in the pubs database

LESSON 1-2: Entity/relation modeling

Types of data relationships
Data normalization

One-to-many relationships
One-to-many relationships
Many-to-many relationships
Recursive many-to-many relationships

LESSON 1-3: Optimizing Oracle SQL

 

Steps in SQL optimization
Parsing a SQL statement
First_rows vs all_rows optimization
Oracle optimizer overview
Management issues with system-wide optimization
Different modes of SQL optimization
Bi-modal databases
Rule-based optimization
Cost-based optimization
All rows optimization
First_rows optimization

Exercise – display and change optimizer_mode

SQL Semantic Analysis
Generating the execution plan
Using optimizer plan stability
Using the v$sql view
Using the v$sql_plan view

Exercise – Query the library cache

LESSON 1 – 4: Using SQL*Plus

Creating basic reports
Exercise – format a simple query in the pubs database

Using the set commands
Adjusting line output
Setting pagesize and linesize
Echo
Feedback
Verify
termout

Exercise – set the SQL*plus environment

Column wrapping
Exercise – add column statements

Creating breaks and summaries
Exercise – add breaks and summaries

Adding prompts to queries
Exercise – parameterize a SQL*Plus script

 

1-5: Explain plan and reading execution plans

  • Explain plan
    •         Oracle autotrace
    •         How to read an execution plan

1 – 6: altering SQL execution plans

Using hints

Joining Oracle tables

2-1 – Table joining internals

Sort-merge joins

Nested Loop joins

Hash joins

STAR joins

Bitmap joins

Exercise – Change table join techniques & evaluate performance

Equi-join
Exercise – write an equi-join

Outer join
Exercise – write an outer join

Hiding joins by creating views
Exercise – create a view of a join

 LESSON 2 – 5 :Subqueries

  • Using IN, NOT IN, EXISTS and NOT EXISTS
  • Subqueries

Exercise – write a subquery

  • Correlated subquery
  • Non-correlated subqueries

Advanced SQL operators

  • Between operator
  • IN and NOT In operators
  • Sub-queries
  • EXISTS clause
  • Using wildcards in queries (LIKE operator)

SQL access methods

  • Review of Basic joining methods
  • Merge join
  • Hash Join
  • Nested Loop join
  • Advanced SQL operators
  • Between operator
  • SQL Tuning

3-1 – DML and SQL Tuning

Writing and optimizing INSERT statements

Writing and optimizing DELETE statements

Writing and optimizing UPDATE statements

3-2 – Optimizer Statistics

Purpose of statistics

Types of statistics (table, column, system)

Histogram statistics

Dynamic sampling

using dbms_stats

Exporting/importing statistics

Statistics management

Exercise – gather system stats

1-6 – SQL Tuning and full-table scans

Basics of file I/O

Sequential reads vs. scattered reads

When full scans are best

RAM caching in the SGA

Automating table caching

Solid State Disks

Tracking full-scans over time with AWR

Exercise – Query v$sql

1 – 3: Aggregation IN sql

Aggregation in SQL

  • Count(*)
  • Sum
  • Avg
  • Min and max
  • Using the group by clause

PL/SQL Section

  1. Basics of PL/SQL
  • PL/SQL architecture
  • PL/SQL and SQL*Plus
  • PL/SQL Basics
  • Introduction to PL/SQL
  • PL/SQL as a 4th generation language
  • Compiling vs. Interpreting
  • Declare statement
  • Exercise: Write “hello” world PL/SQL program

Using PL/SQL Variables
PL/SQL Constants
PL/SQL Datatypes
Error messages – user_errors and show errors
PL/SQL wrapper utility

  1. PL/SQL structures
  • Simple blocks
  • Control structures
  • PL/SQL records
  • Recognizing the Basic PL/SQL Block and Its Sections
  • Describing the Significance of Variables in PL/SQL
  • Distinguishing Between PL/SQL and Non-PL/SQL Variables
  • Declaring Variables and Constants
  • Executing a PL/SQL Block
  1. Error checking – exception handling
  • Defining exceptions
  • Using the when others clause
  • Ensuring complete error checking
  • Passing error messages to calling routine
  1. Boolean logic in PL/SQL
  • Identifying the Uses and Types of Control Structures
  • Constructing an IF Statement
  • Constructing and Identifying Different Loop Statements
  • Controlling Block Flow Using Nested Loops and Labels
  • Using Logic Tables
  • If-then-else structure
  • Testing for numbers characters and Booleans
  1. Cursors in PL/SQL
  • Cursor basics
  • Using a cursor for a multi-row SQL query
  1. Iteration in PL/SQL
  • For loop
  • While loop
  1. PL/SQL tables
  • Defining PL/SQL tables
  • Reasons to use PL/SQL tables
  • Populating a PL/SQL table
  • Retrieving from a PL/SQL table
  1. Dynamic SQL in PL/SQL
  • Introduction to the dbms_sql package
  • Creating a dynamic SQL statement
  1. Nested blocks in PL/SQL
  • Creating nested blocks
  • Understanding scope in nested blocks
  1. Triggers in PL/SQL
  • Triggers and database events
  • Defining a trigger
  • Timing a trigger
  • Enabling and disabling a trigger
  1. Stored procedures, functions and packages
  • Basics of stored procedures
  • Basics of functions
  • Basics of packages
  • Defining stored procedures & functions
  • Function and stored procedures prototypes
  • Passing arguments to functions and stored procedures
  • Recompiling functions and stored procedures
  • Pinning packages in the SGA with dbms_shared_pool.keep
  • Package forward declaration
  • Package dependency
  • Package overloading
  • Listing package information
  1. Bulking in PL/SQL
  • Bulk queries
  • Bulk DML (forall statement)
  • Using cursor attributes

Analyzing impact of bilk operations

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