Fourth Generation Languages- 4GL

By Abdulla Israr & Simran Rani


FOURTH GENERATION LANGUAGES (4GL)

Description also available in video format (attached below), for better experience use your desktop.

Introduction

·       A computer is a computational device which is used to process the data under the control of a program.

·       Program is a sequence of instructions and while executing the program, raw data is processed into a desired output format which is known as Programming Languages.

·       These languages are mainly of two types

o   Low Level

§  First Generation

§  Second Generation

o   High Level

§  Third Generation

§  Fourth Generation

§  Fifth Generation..

 

Fourth Generation

·       4GL are the languages consist of statements that are similar to the statements of a Human Being.

·       They are commonly used in the database programming and scripts such as

§  Perl

§  PHP

§  Python

§  Ruby

§  SQL

·       It is a non-procedural programming language that requires less coding than lower level languages..

·       Any language with English like commands that does not require Input-Process-Output logic comes under 4GL.

·       General features of Fourth Generation languages are

o   Used L.S.I (Large Scale Integration) & V.L.S.I (Very Large Scale Integration)..

o   Increased storage capacity.

o   Very User friendly.

o   Versatile Input-Output devices

o   Having 1billion instruction per second processing speed.

o   Smaller in size and greater reliability..

·       The main reasons to choose a 4GL are

o   Alter & maintain

o   Ease of use

o   Simplicity of design and implement.

 

4GL Advantages

·       Faster system development.

·       Easier program maintenance

·       End user can often develop their own applications.

·       Increase programming productivity.

 

4GL Drawbacks

·       Programs developed in 4GL are executed at a slower speed by the CPU.

·       Programs developed in 4GL need more space in the memory of computer..

 

Video description

      Don’t forget to do these things if you get benefitted from this article

o   Visit our Let’s contribute page https://keedainformation.blogspot.com/p/lets-contribute.html

o   Follow our  page

o   Like & comment on our post


 

Keep sharing your knowledge

Comments

Saqlain Gulzar said…
Good work sir keep it up
March 3, 2023 at 7:40 AM
Post a Comment

Popular posts from this blog

Bio Medical Waste Management

By Abdulla Israr & Simran Rani
Image
BIO MEDICAL WASTE MANAGEMENT         Description also available in video format (attached below), for better experience use your desktop. Introduction ·        BMWM is the management of the waste that is generated during the diagnosis and treatment of a patient ·        Hospital Waste entirely divide into the below mentioned categories o    Non Hazardous (80%) o    Hazardous (20%) §   Infectious (15%) §   Other Hazardous (5%) ·        Non sharps ·        Sharps ·        BMW can easily affect out the entire community such as o    Patients o    Healthcare Workers o    Municipal Workers o    Rag pickers o    Workers in recycling industries   BMW Handling & Management Rules 1998 ·        RULE 1 (SHORT TITLE AND COMMENCEMENT) o    Bio-Medical Waste Management Rules, 1998 o    Came into force on the 20 th July 1998 ·        RULE 2 (APPLICATION) o    Rules apply to all persons who §   Generates, Collect, Receive, Store §   Transport, Treat,
Read more

Basic concepts of Pharmacology

By Abdulla Israr & Simran Rani
Image
BASICS OF PHARMACOLOGY Description also available in video format (attached below) Introduction 1) Pharmacology is a science of drugs that deals with the study of drugs or medicines effects on the body. 2) The term Pharmacology derives from two Greek words Pharmakon  (Drug or Medicine) Logos (Science) DRUGS (Medicines) Definition Drug is a chemical substance that is used to modify the physiological system for the benefit of the recipient (patient). Sources of drugs The drugs are obtained from various sources such as Minerals (Paraffin, Magnesium sulfate) Animals (Insulin, Thyroid) Plants (Morphine, Quinine) Synthetic (Aspirin, Sulfonamides) Microbes (Penicillin & other antibiotics) Genetical engineering (Human insulin, Hormones) Dosage forms of drug The drugs are available in various dosage forms such as Tablets Capsules Injection Infusion Solution Cream Suspension Aerosol etc Routes of drug administration The drugs can be administered from various routes such as Oral (PCM tablet)
Read more

Statistics

By Abdulla Israr & Simran Rani
Image
STATISTICS Description also available in video format (attached below), for better experience use your desktop. Definition ·        It is a branch of mathematics that deals with the §   Collection §   Organizing §   Analysis §   Interpretation §   & Presentation of the masses of numerical data. ·        A collection of quantitative data.   Characteristics ·        It should be expressed numerically just like the height of Abdullah is 6’1” makes the fact clear and easy to understand. ·        It is the collection of facts, and the facts can be related to a group or individual. ·        It is affected by a number of factors, causes and forces in a market which operates on the fact and figures in a group. ·        The main purpose of any scientific study is the first and most important step which helps to collect the data in a systematic manner. ·        Statistics are estimated according to reasonable standards of accuracy. ·        It should be plac
Read more