Oracle 19c tutorials by Mr. Murali Sir, confused? Don't worry, let me break it down for you.

SQL databases are like a collection of books, each with its own structure and content. They store data in an organized way so that you can easily find what you need, like flipping through pages in a book.

Think of it as a powerful toolbox that helps you manage and retrieve all kinds of information. Whether it's checking your account balance or withdrawing money, SQL databases have got your back.

And just like how every book has its own author and story, every table in a database has its own unique key and purpose. It's all about keeping things organized and secure.

So, the next time you're navigating through an SQL database, think about it like exploring a library full of books – each with its own story to tell. 📚🔍

Introduction to Oracle 19c Tutorial by Mr. Murali Sir 🎓

Oracle 19c is a popular database that many companies use to store their data permanently. Companies, especially those with online portals like e-commerce websites or banking platforms, rely on Oracle for secure and efficient data storage.

主な要点 📝 .

UsagePopular for data storage
ScopeUsed in various industries
重要性Critical for online portals

Understanding SQL and PlSQL

One of the main features of Oracle 19c is the Structured Query Language (SQL) and Oracle's proprietary Procedural Language extension to SQL (PlSQL). SQL is the backbone of Oracle databases, used for querying, inserting, updating, and manipulating data, while PlSQL allows for creating complex programs and functions.

Importance of SQL and PlSQL 📍

SQL is the foundation for efficient data access, while PlSQL provides a robust environment for coding and testing various scenarios.

Differences in Oracle and MySQL

Oracle and MySQL are both relational databases, but they have distinct differences in their structures and operation. For example, Oracle follows a strict data structure, with logical and physical tables, whereas MySQL offers a more flexible approach.

Key Factors in Database Management 🗂️

  • Logical vs. Physical Tables
  • Oracle's Structured Data Approach
  • MySQL's Flexibility

Table Operations in Oracle 19c

In Oracle databases, managing tables is crucial for database administrators and developers. Common operations include insert, delete, update, and querying.

Table Operations in Oracle 📊

InsertAdding new data
DeleteRemoving data
UpdateModifying data
QueryRetrieving data

Working with Relational Database and SQL

Relational databases are synonymous with SQL, as SQL serves as the primary language for manipulating data in tables. Understanding SQL is essential for creating, modifying, and retrieving data in a relational database.

Importance of Relational Database 🖥️

  • Efficient Data Management
  • Reliability in Data Retrieval

Establishing Data Integrity

Database management involves ensuring data integrity through mechanisms like primary keys, foreign keys, and unique constraints. These features help maintain data accuracy and consistency.

Ensuring Data Integrity 🔒

  • Primary and Foreign Keys
  • Unique Constraints


Overall, Oracle 19c is a powerful database management system that provides extensive features for efficient data handling and manipulation. Understanding its core components, such as SQL and PlSQL, along with practical table operations, is crucial for proficient database management and development.

Key Points to Remember 💡

  1. SQL and PlSQL are integral to Oracle 19c.
  2. Table operations and relational database concepts are key components.
  3. Ensuring data integrity is pivotal for reliable database management.



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