Unlocking the Power of HIBERNATE

⭐ Configuration:
👉 The main use of Configuration in Hibernate is to provide all the necessary information about your database
👉 It specifies the details of your database connection, such as the URL, username, password, and driver class in XML file. This allows Hibernate to establish a connection to your database.
👉 Once we done configuration we can use it to create a SessionFactory.
Example: Configuration config=new Configuration( );

⭐ SessionFactory:
👉The SessionFactory is like a factory it produces Session objects
👉 SessionFactory is a heavyweight object that's created once, usually during the startup of your application
👉 When your application needs to interact with the database, it requests a Session from the SessionFactory. The Session acts as a gateway to the database, allowing you to perform database operations such as saving, updating, or querying data.
Example: SessionFactiory sf=config.buildSessionFactory( );
⭐ Session:
👉 In Hibernate, a Session is a crucial component that represents a single unit of work with the database.
👉The Session as a bridge between your Java application and the database. It allows you to interact with the database by performing various operations like saving, updating, deleting, or querying data.
👉Hibernate caches data within a Session to optimize performance. This means that if you retrieve the same data multiple times within a single Session
Example: Session session=sf.openSession;

Comments

Understanding SQL in MySQL: From DDL to DCL

📦 MySQL is a widely-used relational database management system (RDBMS) that uses Structured Query Language (SQL) to manage and manipulate data. SQL is divided into several categories, each serving a specific purpose: DDL, DML, DQL, TCL, and DCL. 1. Data Definition Language (DDL) DDL commands are used to define and manage database structures such as tables, indexes, and schemas. The main DDL commands include CREATE, ALTER, DROP, and TRUNCATE. ⭐ CREATE: This command creates a new database object. CREATE TABLE students ( id INT PRIMARY KEY, name VARCHAR(100), age INT ); ⭐ ALTER : This command modifies an existing database object. ALTER TABLE students ADD COLUMN email VARCHAR(100); ⭐ DROP : This command deletes an existing database object. DROP TABLE students; ⭐ TRUNCATE : This command removes all records from a table without deleting the table itself. TRUNCATE TABLE students;

Logging in SpringBoot

Hey Connections 👋 Let's learn and grow together 📈 🌟 What is logging ??? ➡ loggers are like reporters for your application. They keep track of what's happening while your application runs, like noting down important events, errors, or just general information. 📩There are different Logging Levels ⤵ 🌆 Events: Loggers record events, like when someone signs in or a new feature is added. ❌ Errors: They also note down errors, like when something goes wrong or an unexpected problem occurs. ⚠ Warnings: Sometimes, they give warnings if they see something that could be a problem later, like a traffic jam forming up ahead. 👨‍💻 Debugging: And if you need to figure out why something isn't working as expected, loggers can help by showing detailed information, like a detective piecing together clues. These logging levels help developers and operators understand the severity and importance of different log messages and prioritize them accordingly when troubleshooting or monitor...

Exploring Data Formats: JSON, XML, CSV

➡ JSON, XML, and CSV are commonly used for data interchange! in RESTAPI's ok but what is data interchange!?? ⤵ ➡ data interchange format like a language that computers use to talk to each other. Just as people use different languages to communicate, like English, Spanish, or Chinese, computers use specific formats to exchange information. These formats make sure that data is structured in a way that both computers can understand, whether they're sharing data over the internet, saving it to a file, or passing it between different parts of a program. JSON(JavaScript Object Notation) : it used for representing structured data in RESTful APIs, particularly in Spring Web applications. Spring provides excellent support for JSON processing through libraries like Jackson, ➡ It is like writing down information in a way that's easy for both humans and computers to understand. It's a simple and readable format that's often used for transmitting data between a web server ...

Learn Beyond Java with me

Search This Blog