PostgreSQL is an open source relational database management system (DBMS) developed by a worldwide team of volunteers. PostgreSQL is not controlled by any corporation or other private entity and the source code is available free of charge.

Learn PostgreSQL app cover the following topics
- What is PostgreSQL
- Why Choose PostgreSQL Database
- History of PostgreSQL
- Features of PostgreSQL Database
- PostgreSQL Syntax
- Datatypes
- Install PostgreSQL
- Create Database PostgreSQL tutorial
- Drop Database PostgreSQL Guide
- Create Table in PostgreSQL
- Drop Table in PostgreSQL
- Schema
- Insert Data in PostgreSQL
- Select Data in PostgreSQL
- Update PostgreSQL Tutorial
- Delete PostgreSQL Guide
- Where
- Order By
- Group By
- Having
- Condition
- And
- Or
- And & Or
- Not
- Like
- In
- Not In
- Between
- View
- Inner Join
- Left Join
- Right Join
- Full Join
- Cross Join
- Functions
- Trigger
- Alias
- Indexes
- Date & Time
- SQL Interview
- PostgreSQL Interview Questions and Answers
- SQL Quiz

Learn PostgreSQL
PostgreSQL is a powerful open source object-relational database system. It has more than 15 years of active development and a proven architecture that has earned it a strong reputation for reliability data integrity and correctness. PostgreSQL runs on all major operating systems including Linux UNIX and Windows. This app will give you quick start with PostgreSQL and make you comfortable with PostgreSQL programming.

Learn PL/SQL
PL/SQL is a combination of SQL along with the procedural features of programming languages. It was developed by Oracle Corporation in the early 90's to enhance the capabilities of SQL. PL/SQL is one of three key programming languages embedded in the Oracle Database along with SQL itself and Java. This app will give you great understanding on PL/SQL to proceed with Oracle database and other advanced RDBMS concepts.

Learn MySQL
MySQL is the most popular Open Source Relational SQL Database Management System. MySQL is one of the best RDBMS being used for developing various web-based software applications. MySQL is developed marketed and supported by MySQL AB which is a Swedish company.

Learn SQL
SQL is a database computer language designed for the retrieval and management of data in a relational database. SQL stands for Structured Query Language. This app will give you a quick start to SQL. It covers most of the topics required for a basic understanding of SQL and to get a feel of how it works.