29-03-2012, 04:09 PM
4G LANGUAGE
4g.ppt (Size: 200.5 KB / Downloads: 34)
Programming Language
A programming language is a machine-readable artificial language designed to express computations that can be performed by a machine, particularly a computer.
Programming languages can be used to create programs that specify the behavior of a machine,to express algorithms.
Many programming languages have their syntax and semantics.
First-generation programming language
A first-generation programming language is a machine-level programming language.
No translator was used to compile or assemble the first-generation language.
The main benefit of first-generation programming language is that the code a user writes can run very fast and efficiently.
It is a lot more difficult to learn than higher generational programming languages, and it is far more difficult to edit if errors occur.
Assembly language
It is an example of 2nd G Language.
Assembly languages are a family of low-level languages for programming computers.
It implements a symbolic representation of the numeric machine codes.
Other constants needed to program a particular CPU architecture.
Examples of 4G Languages
Database query languages
Query languages are computer languages used to make queries into databases and information systems.
Query languages can be classified according to whether they are database query languages or information retrieval query languages.
SQL is a well known query language for relational databases.
XQuery is a query language for XML data sources.