INTODUCTION TOINFORMATION TECHNOLOGY

DATA AND INFORMATIONDATA:-DATA ARE SET OF IOSOLATED,UNRELATE,UNINTERPRATED RAW FACTS.

INFORMATION:-INFORMATION REFERS TO MEANINGFULL DATA.IT IS A SET OF ORGANISED,VALIDATED,CORRECTED AND COLLECTED DATA.

NEED FOR INFORMATION→ADDITION OF KNOWLEGDE→DECISION MAKING AIDS→INCREASE IN PRODUCTIVITY

QUALITY OF INFORMATION

1.VALIDITY:-THE INFORMATION SHOULD HAVE MINIMIZED UNCERTAINITIES TO BE TREATED AS A VALID INFORMATION.2.MEANINGFULNESS:-IT SHOULD BE MEANINGFUL IN GIVEN CONTEXT AND FOR THE PERSON CONCERNED.3.PRECISON:-IT SHOULD BE CONCISE HAVING SUMMARISED RELEVANT DATA.4.ACCURACY:-IT SHOULD TRY TO REACH MAXIMUM POSSIBLE ACCURACY

VALUE OF INFORMATION1.FORM UTILITIES:-AS THE FORM OF INFORMATION MORE CLOSELY MATCHES THE REQUIREMENTS OF DECISION MAKER , ITS VALUE INCREASES.

2.TIME UTILITY:-INFORMATION HAS GREATER VALUE TO THE DECISION MAKER IF IT IS AVAILABLE WHEN NEEDED.

3.ACCESSIBILITY:-INFORMATION HAS GREATER VALUE IF IT CAN BE ACCESSED OR DELIVERED EASILY

4.DECISION MAKING POTENTIAL:-IF IT PROVIDES HELP TO MAKE AN EFFECTIVE DECISION WITH MINIMUM COST , TIME AND EFFORT ,SUCH INFORMATION HA MORE VALUE.

DATACONCEPTSALL INFORMATION CONCEPTS,IT’S TIME WE TALKED ABOUT IS DATA CONCEPTS.THESE CAN BE VIEWEDIN TWO TERMS:-

1.PHYSICAL DATA CONCEPT:-IT REFERS TO THE MANNER IN WHICH DATA IS RECORDED PHYSICALLY ON HARDWARE.

2.LOGICAL DATA CONCEPT:-IT IS THE MANNER IN WHICH DATA ARE PRESENTED TO THE APPLICATION PROGRAMMER.

COMPONENTS OF A FILEBYTE:-A BYTE IS A GROUP OF EIGHT BITS AND IS USED TO STORE A CHARACTER.DATA ITEM:-A DATA ITEM IS A SMALLEST UNIT OF NAMED DATA.DATA AGGREGATES:-IT IS A NAMED COLLECTION OF DATA ITEMS WITHIN A RECORD AND REFERS TO A WHOLE.RECORD:-A RECORD IS A NAMED COLLECTION OF DATA ITEMS WHICH REPRESENTS A COMPLETE UNIT OF INFORMATION.FILE:-A FILE IS A NAMED COLLECTION OF ALL OCCURENCE OF A GIVEN TYPE OF LOGICAL RECORD.

DATA STORAGEDEFINITION:-DATA ARE STORED FOR

LATER USE.

FACTOR AFFECTING THE WAY OF DATA ARE STORED:-1.SPACE SAVING2.MINIMIZATION OF REDUNDANCY3.THROUGHPUT4.DATA VOLATILITY5.FILE ACTIVE RATIO

FILE ORGANIZATIONDEFINITION:-THE TECHNIQUES USED TO REPRESENT AND STORE THE RECORDS ON A FILE IS REFERRED TO AS FILE ORGANIZATION.THREE FUNDAMENTAL ORGANIZATION TECHNIQUES ARE:-1.SEQUENTIAL FILE ORGANIZATION2.DIRECT ACCESS FILE ORGANIZATION.3.INDEX FILE ORGANIZATION.

INFORMATION SYSTEMDEFINITION:-IT IS DEFINED TECHNICALLY AS A SET OF INTERRELATED COMPONENTS THAT COLLECT ,PROCESS, STORE , AND DISTRIBUTE DATA AND INFORMATION AND PROVIDE A FEEDBACK MECHANISM TO MEET AN OBJECTIVE

COMPUTER BASED INFORMATION SYSTEM

DEFINITION:-IT IS AN ORGANIZATIONAL INFORMATION SYSTEM THAT RELY ON COMPUTER TECHNOLOGY TO COLLECT, PROCESS, STORE, AND DISSEMINATE INFORMATION. IT IS COMPOSED OF HARDWARE ,SOFTWARE, DATA BASE, TELECOMMUNICATION ,PEOPLE ,AND METHODS.

INTERDEPENDENCE BETWEEN BUSINESS ORGANIZATION AND INFORMATION SYSTEM

THANK YOU

By - Aadarsh Srivastava Contact – 7827019719Facebook – aadarsh7777777