Oracle Database 12c: Introduction to SQL

ABOUT THE PROGRAM

Since the early days of computers, there was always a need to store data. First, it was stored just in the computer’s RAM and later on in flat files. As the need for more data grew, newer options came into the market. Dbase was the forerunner among such technologies. It was followed by Foxbase, FoxPro etc. To suit to the Windows environment these DBMS systems either upgraded with Windows versions or there were new players in the market such as Microsoft Access. Data still kept pouring in and the need to handle such large amounts of data gave rise to the RDBMS and ORDBMS packages that we are all familiar with now. A starter among them was ORACLE. Oracle used single statements to retrieve, update or delete data from the database as compared to the programs a user would have to write for doing the same job early on.

  • Learn to deal with Data Dictionaries

  • Understand The Concept of External Tables

  • Extract Data From Multiple Tables Using Joins

  • Learn To Group Rows With Similar Type of Data

  • Get Certified in the best Database Query Language

WHAT'S INCLUDED ?

Find out what's included in the training programme.

Includes

Tutor Support

A dedicated tutor will be at your disposal throughout the training to guide you through any issues.

Includes

Certificate

Delegates will get certification of completion at the end of the course.

PREREQUISITES

The Introduction to SQL course requires the delegates to be familiar with data processing concepts and techniques.

TARGET AUDIENCE

  • Application Developers
  • Business Analysts
  • Data Warehouse Administrator
  • Developer
  • Forms Developer
  • PL/SQL Developer
  • System Analysts

WHAT WILL YOU LEARN?

  • Identify the major physical constituents of the Oracle Database 12c
  • Learn to fetch data using SQL statements
  • Create reports using group functions
  • Learn to write queries that form a part of another query
  • Run data manipulation statements (DML) in Oracle Database 12c
  • Create tables to store data
  • Create views for displaying data
  • Grant / revoke permissions to specific objects
  • Understand the concept of objects in a schema
  • Discuss the various kinds of JOINS
  • Using Data Dictionary View Learn to Manage objects
  • Write sub-queries having multiple-columns
  • Understand and Use scalar and correlated sub-queries
  • Using SQL*PLUS Create reports

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PROGRAM OVERVIEW

Oracle, since its inception as a Database, has had many versions namely Oracle 1 through Oracle 8, then 8i, 9i, 10g, 11g and the latest being 12c. Each of these versions come with three main components i.e. SQL* PLUS, Oracle Forms and Oracle Reports. Oracle also comes in various Database Editions such as

  • Oracle Enterprise Edition
  • Oracle Standard Edition
  • Oracle Standard Edition One
  • Oracle Personal Edition
  • Oracle Express Edition

However, the most primary component of the database in all these versions has been SQL*Plus. SQL*Plus is the application that uses a query language to perform operations such as insert, update, delete and others.

The Oracle Database 12c: Introduction to SQL, helps the delegates to write multiple queries which can also be executed as a single query using the operators provided by Oracle SQL. The Oracle SQL allows its users to store data using DDL operations, manipulate data with DML operations and control data using DCL. It also provides for Transaction Control using the TCL feature. During this course, the delegates learn to manage objects within a schema, work with different types of views, manage roles and privileges, work with external tables etc.


PROGRAM CONTENT

  • Introduction
    • Overview of Oracle 12c Database
    • Understanding RDBMS Concepts and Terminologies
    • SQL and the Development Environment – An Introduction
    • The Oracle SQL Developer
    • The Schemas and Tables Used in the Course
  • The Select Statement
    • Select Statement – It’s Features
    • NULL Values and Arithmetic Expressions
    • Using DISTINCT for Unique Records
    • Column Aliases
    • Using Concatenation and Other Operators
    • Using Describe
  • Constraining and Arranging Data
    • Using the WHERE clause to limit rows
    • Using Logical Operators AND, OR, NOT
    • Use Order By for Sorting Rows
    • Using Substitution Variables
    • Use & and && in a SQL Statement
    • Making Use of Define and Verify
  • Single-Row Functions
    • Single row and multiple row functions - their differences
    • Oracle SQL Function Types
    • Manipulating strings in a Select Query and WHERE clause with character functions
    • Using ROUND, TRUNC and MOD functions
    • Perform calculations with dates
    • Using the date functions
  • Conversion Functions and Conditional Expressions
    • Implicit and explicit data type conversion
    • The conversion functions
    • Nesting functions
    • Use NVL, NULLIF, and COALESCE functions with data
    • Making Use of IF THEN ELSE logic in SELECT Query
  • Using Group Functions in Oracle
    • Group Functions
    • Creating Groups of Data with GROUP BY
    • Restricting Group Results with HAVING clause
  • Using Joins to Display Data
    • JOINS and their Types
    • Types of Joins
      • Natural join
      • Self-join
      • Non equijoins
      • OUTER join
    • Using Subqueries
      • Subqueries – An Introduction
      • Types of Subqueries
        • Single Row
        • Multiple Row
      • The Set Operators
        • Set Operators – An Overview
        • Union and Union All
        • Intersect
        • Minus
        • Matching Select Statements
        • Using Order By in SET’s
      • Managing Tables
        • Using DML
        • Using Transactions
      • An Introduction to DDL
      • Data Dictionary Views - An Introduction
        • Overview of Data Dictionary Views
        • Structure of the Data Dictionary
        • Using the Data Dictionary
        • Querying the Data Dictionary
      • Sequences, Synonyms and Indexes
        • An Overview
        • Creating Sequences, Synonyms and Indexes
      • Views
        • An Overview
        • Creating Views
      • Dealing With Schema Objects
        • Managing constraints
        • Managing temporary tables
        • Managing external tables
      • Fetch Data With The Help of Subqueries
        • Fetch Data by Using a Subquery as Source
        • Working with subqueries with Multiple-Columns
        • Using Scalar subqueries
        • Correlated Subqueries
        • Using the WITH Clause
      • Data Updating with Subqueries
        • Manipulate Data with Subqueries
        • Using a Subquery as a Target for Inserting Data
        • Making Use of the WITH CHECK OPTION Keyword on DML Statements to make validation
        • Update and Delete rows Using Correlated Subqueries
      • Roles and Privileges
        • System Defined privileges
        • Roles - Creating
        • Object Level privileges
        • Taking Back object privileges
      • Data Manipulation
        • Overview of the Explicit Default Feature
        • Performing multiple INSERTs
        • Using MERGE
        • Performing flashback
        • Track Any Changes Made To Data
      • Handling Data in Different Time Zones
        • Understand the following:
          • CURRENT_DATE
          • CURRENT_TIMESTAMP
          • LOCAL_TIMESTAMP

Oracle Database 12c: Introduction to SQL Enquiry

 

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ABOUT Wrexham

Wrexham is the largest town in north Wales that had a population of 61,603 as of the 2011 census. The Geographical condition of Wrexham city is near to Lower Dee Valley. The city is also surrounded by Welsh mountains. The city is the hub for Education sector, retail, commerce and Administration too. The Clwyd absorbs a lot of portion of Denbighshire in the mid-1970's.  From 1997 to 2017, it is also a centre of Wrexham County Borough.

Wrexham existed even in the times before Jesus Christ, i.e. somewhere between 8000 – 4300 BC. Excavations have shown that agriculture was the main source of living through the people of Wrexham also had trade relations with the Romans. The Anglo-Saxons rule Wrexham from the 8th to the 10th Century AD.

When Llywelyn ap Gruffudd died in 1282 fighting in the independence struggle, Wrexham fell to the Marcher, a semi-independent lordship of Bromfield and Yale. After this, Wrexham continued to progress through the Middle Ages and in the process it became a centre of exchange for the goods produced in the Dee valley and Denbighshire uplands. Iron and lead were also being mined in Wrexham.

The town became a market town after 1327. As the end of the 14th Century approached, the town pollution started to constitute of different kind of people such as dancers, goldsmiths and other wealthy people who wanted to do business in Wrexham.

Tourism

  • The National Eisteddfod of Wales was held in Wrexham in 2011.

Places to Visit

  • Wales Comic Con: Personalities including actors, artists, writers and sports meet here every year for their fans all around the world.
  • Giles Church: It is the famous Chruch which is one of the seven wonders of Wales. It is considered as the burial place of Elihu Yale.
  • Racecourse Ground: This ground is the oldest international stadium in the world which is home to Wrexham F.C also.
  • Techniquest Glynd?r: This is a famous science discovery centre in the city.
  • Wrexham County Museum – This museum has a local history and is very famous among the citizens.
  • Saith Seren: It is also called “Seven Stars”. This centre provides a multi-purpose environment for the residents. They can have a locally sourced food along with the bar. It also has live entertainment which makes the experience awesome. Meeting rooms are also available for the professionals for business purposes.

Governance

The county council consists of 52 councillors out of which one is elected as Mayor for a year. The constituency of the town elects members to the National Assembly for Wales and UK Parliament. The constituency consists of both city and some nearby villages. Various communities in the town are Rhosddu, Offa, Acton and Caia Park.

Public Services

Wrexham Maelor Hospital is one of the three largest hospitals in North Wales. The hospital contains facilities required to provide effective treatment. It has an arrangement of over 900 beds. Other hospitals include Penley Polish Hospital and Chirk Community.

The major private hospital in the town is Yale hospital with over 25 beds. It is near to the Maelor Hospital. Spire healthcare operate and own this hospital.

The North Wales Police served the city. The Eastern division headquarters is based in the centre of the town.

In case of any fire-related issue, the main fire station of town is located on Croesnewydd Road. It is now combined with Ambulance Service Station. Llangollen and Chirk have local fire stations.

Economy

Earlier the economy of Wrexham's was based on the heavy industry. This was later on overcome by biotechnology, professional services and manufacturing. Among other regions of North Wales, the town leads in the retail sector. The town showed exemplary performance by coming fifth among other cities of the United Kingdom in 2007.