Oracle Sql Coding With The Hr Schema - Quick Start In 2025

Oracle SQL Crash Course: Learn by Doing with the HR Schema

What you'll learn

Fundamentals of SQL: You will understand the key concepts of SQL.

Explain the purpose and use of essential SQL commands (SELECT, FROM, WHERE, ORDER BY, GROUP BY, HAVING).

Differentiate between various data types in SQL.

Construct queries to retrieve specific data from a database.

Formulate queries to filter data using different operators (comparison, logical, special).

Utilize aggregate functions (e.g., COUNT, SUM, AVG) to analyze data.

Employ JOIN clauses to combine data from multiple tables.

Create subqueries to refine data retrieval.

Requirements

SQL Developer installed with access to the HR schema.

Description

Oracle SQL: Quick Start with HR SchemaThis course is the perfect choice for anyone who wants to quickly and effectively learn the basics of SQL in an Oracle environment. Whether you're a novice programmer, data analyst, or just want to expand your skillset, this course will provide you with a solid foundation and practical experience.What will you learn in this course?Fundamentals of SQL: You will understand the key concepts of SQL, such as SELECT, FROM, WHERE, ORDER BY, GROUP BY, HAVING, as well as aggregate functions and data operations.Working with the HR schema: You will become familiar with the structure of the sample HR schema in the Oracle database, which contains realistic data about employees, departments, jobs, etc.Writing SQL queries: You will learn how to create various SQL queries to search, filter, sort, and aggregate data from tables in the HR schema.Practical applications: You will see how to use SQL to solve typical problems, such as analyzing employee data, generating reports, and searching for information.Why choose this course?Quick Start: The course focuses on the most important elements of SQL, so you can gain a solid foundation in a short time.Practical approach: Learning takes place through practical exercises and examples based on the HR schema, which allows you to consolidate knowledge and gain real skills.Accessibility: The course is available online, so you can learn anywhere and anytime.Clear and understandable language: Training materials are written in a simple and accessible way, with numerous examples and illustrations.Who is this course for?Programmers who want to learn SQL to work with Oracle databases.Data analysts who need SQL to analyze and report data.Students of computer science and related fields.Anyone who wants to learn the basics of SQL and its practical applications.Course syllabus:Introduction to SQL and Oracle database: Discussion of basic concepts, environment setup, connection to the database.HR Schema: Presentation of the structure of the HR schema, discussion of tables and relationships between them.SELECT queries: Learning to create simple SELECT queries, selecting columns, filtering data.WHERE clauses: Using various comparison, logical, and special operators to filter data.Sorting and grouping: Using the ORDER BY clause to sort results, the GROUP BY clause, and aggregate functions.Joining tables: Queries with JOIN, combining data from multiple tables.SQL functions: Presentation of the most commonly used SQL functions, operations on strings, dates, and numbers.Subqueries: Creating nested queries, using subqueries in the WHERE clause.Data operations: Inserting, modifying, and deleting data from tables.After completing the course:You will be able to write SQL queries independently in the Oracle environment.You will gain practical skills in searching, filtering, and analyzing data.You will be able to use the acquired knowledge in your professional work or personal projects.Don't delay, sign up for the course today and start your SQL adventure!

Overview

Section 1: Software and data

Lecture 1 SQL Developer and HR Scheme

Section 2: Basic SQL Commands

Lecture 2 SELECT - Retrieving data

Lecture 3 WHERE - Filtering data using the WHERE clause

Lecture 4 ORDER BY - Data sorting

Lecture 5 Limiting the number of rows - FETCH FIRST, ROWNUM and OFFSET clauses

Lecture 6 Practical examples of using SELECT, WHERE, and ORDER BY statements

Section 3: Data Aggregation

Lecture 7 Introduction to Data Aggregation

Lecture 8 Aggregate Functions: COUNT, SUM, AVG, MIN, MAX

Lecture 9 GROUP BY

Lecture 10 HAVING

Programmers who want to learn SQL to work with Oracle databases.,Data analysts who need SQL to analyze and report data.,Students of computer science and related fields.,Anyone who wants to learn the basics of SQL and its practical applications.