learn

1. Java

2. Flutter

2.1. Dart

2.2. Flutter

3. Oracle

3.1. Architecture

3.1.1. Client Application

3.1.2. Connect Packet

3.1.3. processes SQL

3.1.4. Database Server

3.1.4.1. Listener

3.1.4.2. Database Instance

3.1.4.2.1. Processes

3.1.4.2.2. Memory Structures

3.1.4.3. Database

3.1.4.3.1. Data Files

3.1.4.3.2. system Files

3.2. Oracle Developer

3.2.1. SQL

3.2.1.1. Commands

3.2.1.1.1. DDL

3.2.1.1.2. DQL

3.2.1.1.3. DML

3.2.1.1.4. DCL

3.2.1.1.5. TCL

3.2.1.2. Data Types

3.2.1.2.1. Character

3.2.1.2.2. Datetime and Interval

3.2.2. PL-SQL

3.2.2.1. Program Units

3.2.2.1.1. PL/SQL block

3.2.2.1.2. Function

3.2.2.1.3. Procedure

3.2.2.1.4. Package

3.2.2.1.5. Trigger

3.2.2.1.6. Type

3.2.2.2. Data Types

3.2.2.2.1. Scalar

3.2.2.2.2. Large Object (LOB)

3.2.2.2.3. Composite

3.2.2.2.4. Reference

3.2.3. Forms

3.2.4. Report

3.3. Apex

3.3.1. SQL

3.3.2. PL-SQL