These are software packages that have more abilities than other programming languages. In this group we can put VB (Visual Basic and VB .NET), Delphi, Clarion, Cliper.

Clarion is considered as the most powerful one, but is rarely used.
Cliper is considered as the most simple one.

SQL - Structure Query Language
Java, Visual Studio, Oracle Dev. Kit

Developing platforms are very complex software packages which make so called developing enviroment, ambient for developing of applications. Most popular ones are:
- Java (SunMicrosystems)
- VS (Visual Studio - Microsoft)
- Oracle SDK (Oracle)

Java is platform which is made as generator of "transparent" applications. This means that applications developed in Java could work in every operating systems whithout bigger errors. Thats why these applications are primary made for www (internet) because, there are lots of computers with different operating systems and different hardware platform connected to it.

VS (Visual Studio) is Microsoft developing platform which presents union of applications based on some of VB (Visual Basic) versions. Applications made in VS can work only on Microsoft Windows.

Oracle is developing enviroment for managing transaction databases. Transaction databases are very sensitive and complicated systems and mostly used for managing financial flows, money. This means that extreme reliability and security is required. Oracle is system that offeres high reliability and data protection.