SQL Training: Onsite and Online

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5-min Narrated Presentation on SQL

  • History of SQL
  • Purpose of SQL
  • SQL: Difficulty Level
  • SQL: The Good
  • SQL: The Future
  • SQL Syntax

History of SQL

  • SQL (Structured Query Language) was developed by IBM in the late 1970s for IBM's DB2 RDBMS
  • SQL became the language for relational database development
  • ANSI formalized SQL as a standard in 1986
  • SQL is vital to developing databases in major platforms such as Oracle, MySQL and Microsoft SQL Server

SQL Is Three Languages

  • SQL is actually three languages!
  • Data Definition Language (DDL) for the creation, alteration and dropping of database objects (e.g., tables)
  • Data Manipulation Language (DML) for querying and updating relational data
  • Data Control Language (DCL) for securing data

Sample Uses of SQL

  • Interactive through GUI interfaces such as Microsoft Access query grids
  • Embedded in GUI and console business applications
  • Embedded in Java EE and Microsoft .NET web applications

SQL Difficulty Level

  • SQL is a high-level data access language
  • SQL was designed to be written by end users and developers
  • SQL is not a programming language
  • Commonly used in programming courses

Learning SQL

  • SQL is relatively straightforward to learn
  • Design query grids such as offered by Microsoft Access expedite learning SQL
  • Excellent documentation is available from all major vendors such as MySQL: https://dev.mysql.com/doc/refman/5.7/en/
  • SQL lexicon consists of understandable commands such as SELECT, INSERT, UPDATE and DELETE

SQL: The Good

  • Relatively straightforward to learn
  • Cross-platform
  • Excellent documentation from major vendors (e.g., Oracle, IBM, Microsoft)
  • Well respected in the IT industry

SQL: The Bad

  • SQL is a computer language and may present challenges to students with no computer language background.

SQL: The Future

  • SQL has a bright future!
  • Both ANSI and ISO publish standards for SQL usage
  • Tremendous corporate investment in SQL-based applications
  • Full support by major vendors such as Oracle, Microsoft and IBM

Syntax

  • Syntax was originally established by IBM based on the company's PL/I programming language
  • The language keywords are not case sensitive although capitalization is standard practice
  • The syntax is based on easily-understandable verbs:
    • SELECT
    • INSERT
    • UPDATE
    • DELETE

Creating a Table

CREATE TABLE GardenTools
(
id			INT NOT NULL,
description	VARCHAR(1000),
price			NUMERIC (9,2))

Comments

--Single-line comments follow 2 hyphens

/*
This is a 
	multi-line comment.
*/

Strings

  • Fixed-length strings are defined as char:
    • Customer_name CHAR(25) DEFAULT 'BestCo Ltd.'
  • Varying-length strings are defined as varchar:
    • Address_line VARCHAR(100) DEFAULT '2017 Anywhere Lane'

Integer, Decimal, and Float Column Types

  • quantity_on_hand INT DEFAULT 0
  • item_price DECIMAL(9,2)
  • population_of_asia FLOAT

Date and Time Column Types

  • date_of_order DATE
  • time_of_order TIME

Selecting Data from a Table

  • SELECT * FROM GardenTools
  • SELECT id, description FROM GardenTools WHERE price > 9.99

Inserting a Row into a Table

  • INSERT INTO GardenTools VALUES (202, 'Large rake', 24.49)
  • INSERT INTO GardenTools (id, description) VALUES (219, 'Small rake')

Updating a Row in a Table

  • UPDATE GardenTools
  • SET price = 25.99
  • WHERE id = 202

Deleting a Row in a Table

  • DELETE FROM GardenTools WHERE id = 202

Keep Learning SQL

by taking a

Webucator SQL class

https://www.webucator.com/database-training/sql-training.cfm

Live Online Training

The schedule below shows the next two upcoming classes for each course. For more class dates click on the course title.

CourseDatePriceRegister
Introduction to SQL TrainingOct 19 - Oct 20, 2017$790.00Register
Introduction to SQL TrainingNov 02 - Nov 03, 2017$790.00Register
Introduction to SQL Training Using SQL ServerOct 19 - Oct 20, 2017$790.00Register
Introduction to SQL Training Using SQL ServerNov 02 - Nov 03, 2017$790.00Register
Introduction to SQL Training Using OracleOct 19 - Oct 20, 2017$790.00Register
Introduction to SQL Training Using OracleNov 02 - Nov 03, 2017$790.00Register
Introduction to SQL Training using MySQLOct 19 - Oct 20, 2017$790.00Register
Introduction to SQL Training using MySQLNov 02 - Nov 03, 2017$790.00Register
Advanced Oracle SQL QueriesNov 13 - Nov 15, 2017$1,275.00Register
Advanced Oracle SQL QueriesDec 04 - Dec 06, 2017$1,275.00Register
Advanced MySQL QueriesNov 10 - Nov 10, 2017$425.00Register
Advanced MySQL QueriesDec 08 - Dec 08, 2017$425.00Register
SQL Database Definition Language (DDL) TrainingNov 10 - Nov 10, 2017$395.00Register
SQL Database Definition Language (DDL) TrainingDec 08 - Dec 08, 2017$395.00Register

No cancelation for low enrollment

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