Course Outline

1. Introduction to Relational Databases

  • What is a Relational Database?
  • PostgreSQL architecture and components
  • Overview of PgAdmin and psql tools
  • Connecting to a database and understanding schemas

2. SQL Basics

  • Database objects: tables, columns, and constraints
  • Data types and NULL values
  • Writing simple SELECT queries
  • Filtering with WHERE, pattern matching, and logical operators
  • Sorting and limiting query results

3. Working with Functions and Expressions

  • Arithmetic and string functions
  • Conditional expressions and case statements
  • Handling NULLs and data type conversions

4. Combining and Filtering Data

  • Inner and outer joins, self-joins, and cross joins
  • Set operations: UNION, INTERSECT, and EXCEPT
  • Subqueries: scalar, correlated, and table subqueries
  • Common Table Expressions (CTEs) and recursive queries

5. Aggregation and Grouping

  • Aggregate functions: SUM, AVG, COUNT, MIN, MAX
  • GROUP BY and HAVING clauses
  • Window and ranking functions

6. Modifying Data

  • Inserting, updating, and deleting records
  • Using transactions and rollback
  • Understanding ACID principles
  • Safe data manipulation practices

7. Database Objects and Logical Structure

  • Creating and managing schemas and tables
  • Primary keys, foreign keys, and unique constraints
  • Creating and managing views and materialised views
  • Introduction to indexes and performance implications

Requirements

  • An understanding of basic IT and data concepts
  • No prior SQL or database experience is required
  • Familiarity with using software tools on Windows/Linux is helpful

Audience

  • Database beginners and analysts
  • Developers starting with PostgreSQL
  • Professionals managing or exploring relational databases
 14 Hours

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