SQL Introduction
Course Facts
- 2 day course
- Our Trainers are Authorised Professionals
- Live Online or Classroom-based
- Certificate of completion
- Maximum class size of 6 for scheduled courses
- Unlimited support after your course
- Courses at all levels: Introduction, Intermediate, Advanced and Masterclasses
Course Outline
- Introducing Fast Track to SQL
- Introduction to Relational Databases
- Selecting Data
- Creating JOIN statements
- Changing database contents with INSERT, UPDATE and DELETE
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Overview
Course Outline
Introducing Fast Track to SQL
- Understanding course prerequisites
- Using the course format
- Browsing the course outline
Introduction to Relational Databases
- Define relational database/terms used in relational database design/ basic concepts of relational technology
- Understand why duplicate data is bad and hard to manage
- Contrast data architectures
- Logical vs. Physical Data Modelling
- Understand Entity/Relationship diagrams
- Describe the basics of normalization
Selecting Data
- Overview of SQL Viewer
- Using the basic SELECT statement
- Using a column wildcard
- Using owner and table prefixes
- Specifying textual vs numeric data types
- Filtering rows with the WHERE clause
- Using comparison operators: =,<, >, and <>
- Using Null/ Nulls and inequality
- Using compound WHERE clauses with AND and OR
- Using IN and NOT IN to shorten SQL queries
- Using LIKE for partial pattern matching
Creating JOIN statements
- Describe join types
- Creating recordsets from multiiple tables using an inner join
- Using primary and foreign keys in performing joins/filters with joins
- Joining tables using ANSI-92 syntax
- Joining 3 or more tables in a single statement
Changing database contents with INSERT, UPDATE and DELETE
- Adding data to tables with the INSERT statement
- Introducing the UPDATE statement
- Using the DELETE statement/a filter
- Flagging records deleted as an alternative
Enhancing SELECT statements
- Ordering data
- Expressions in SELECT
- Renaming tables/columns with aliases
- Selecting computed columns
- Character strings in queries
- Aggregating values
- Getting row counts
- Minimum/maximum in a column:
- min ()/max ()
- Average/sum of a column:avg()/sum()
- Grouping query results with GROUP BY clause/Grouping data
- Aggregates & groups (count, min, max, avg, sum)
- Using positional notation in GROUP BY/the HAVING clause
Connecting to a RDBMS
- Understand the Client/Server model for databases
- Basic concept of database users and permissions
- Discuss how database drivers work
- Creating an ODBC Data source
- Comparing performance (Access & MSDE)
- Query Painters
Introduction to Stored Procedures
- Description of stored procedures
- Benefits of stored procedures
- Incorporating procedural logic into stored procedures
- Examples of stored procedures for SQL Server and Oracle
Strategies for Web Database Access
- Understand limitations of the Web environment
- Discuss strategies for limiting data
- Next-n interfaces
- Limiting to n rows returned
- Performing dynamic searches
- Increasing selectivity using search criteria
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SEE COURSESUseful Links
- Wikipedia page for SQL – History and capabilities of SQL
- SQL explained – What is Structured Query Language (SQL)?
- SQL YouTube channel – Official YouTube channel for SQL learners
- W3 Schools tutorials – Always a great site for tutorials
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