File org leela mdhm 21 batch aiha lecture

FILE ORGANISATION

B LEELA DHARMDHM (OU) 2014-16; AIHAROLL NO 1404-01-676031(INDIA)94904-68518; [email protected]

NO BACKGROUND USED FOR UNIVERSAL USAGE

FIRST 40 SLIDES (ONLY 30- 40 MINUTES LECTURE)

PREPARED AS PER SEMESTER-3 SYLLABUS OF

HIS (HOSPITAL INFORMATION SYSTEMS) PAPER FOR

MDHM (MASTERS DEGREE OF HOSPITAL MANAGEMENT) OF

AIHA (APOLLO INSITUTE OF HOSPITAL ADMINISTRATION)

STUDENT’S PURPOSE.

FOR FULL PRESENTATION SEE AND INCLUDE ALL SLIDE AS PER INSTRUCTIONS IN THE END

AIM TO ACQUAINT WITH FILE ORGANISATION.

PREVIEWINTRODEFINITIONS TYPESADVANTAGES &

DISADVANTAGESCONCLUSION

DEFINITIONS(RECAPITULATION - MUST KNOW INFO)

BIT (0 & 1)

BYTE (8 BITS)

ELEMENT/FIELD (ONE/MORE BYTES; PHY SPACE ON TAPE/DISK)

RECORD (C0LLECTION OF ELEMENTS)

FILE (COLLECTION OF RECORDS)

DATA BASE (SET OF INTERRELATED FILES)

FILE ORGANISATION (LOGICAL ARRANGEMENT OF DATA IN A FILE SYSTEM)

TYPES(SHOULD KNOW INFO)

SERIAL / HEAP / PILE SEQUENTIALINDEXED SEQUENTIAL /

HASHED CLUSTERED FILE SYSTEMDIRECT ACCESS /RANDOM

ACCESS

TYPES OF FILE ORG

THE HEAP FILE THE SERIAL FILE

CharacteristicsA collection of recordsStored in key

sequenceAdding/deleting

record requires making new file

Used as master files.

SERIAL / HEAP / PILE FILE ORG

MR. SUBBA MALE 35MRS. ANNA FEMA

LE 45MISS

HUSSAIN MALE 14

MR. ISSAC MALE 75MRS. RAO FEMA

LE 45MISS ARYA FEMA

LE 15

AN EXAMPLE OFSERIAL / HEAP / PILE FILE ORG

THE

SEQUEN

TIAL

FILE

CharacteristicsUsed in olden days.Records Stored as per primary

key.No direct access to individuals

is of no concern.Access is done is sequential

order until record is found.Binary access only feasible if

any other parameter is known

SEQUENTIAL FILE ORG

MR. SUBBA MALE 35 FEVER

OPD 1

MRS. ANNA FEMA

LE 45 COLD

OPD 3

MISS

HUSSAIN MALE 14 COU

GHOPD

5MR. ISSAC MALE 75 REF OPD

9MRS

. RAO FEMALE 45 REF OPD

9MISS ARYA FEMA

LE 15 EYE OPD 2

CONTINUATION OF THE SAME EXAMPLE OF SERIAL / HEAP / PILE FILE ORG FOR BETTER ASSIMILATION OF SEQUENTIAL FILE ORGANIZATION

1 MR. SUBBA MALE 35 FEVER 8AM OPD

13 MR

S. ANNA FEMALE 45 COL

D8.02 AM

OPD 3

5 MISS

HUSSAIN MALE 14 COU

GH8.05 AM

OPD 5

4 MR. ISSAC MALE 75 REF VIP OPD 9

6 MRS. RAO FEMA

LE 45 REF VIP OPD 9

2 MISS ARYA FEMA

LE 15 EYE 8.01 AM

OPD 2

CONTINUATION OF THE SAME EXAMPLE OF SERIAL / HEAP / PILE FILE ORG FOR BETTER ASSIMILATION OF SEQUENTIAL FILE ORGANIZATION

TOKEN SYSTEM, RECEPTION COUNTERS & QUEUE SYSTEM FOLLOWED. TIME GIVEN BY AUTOMATED TOKEN & DETAILS ENTERED BY BY THE DESK INCHARGE SHOWING

THE PATIENT RECORDS AT VARIED TIMES……


12 MISS ARYA FEMALE 15 EYE 8.01

AMOPD

23 MRS. ANNA FEMALE 45 COLD 8.02

AMOPD

34 MR. ISSAC MALE 75 REF VIP OPD

95 MISS HUSSAI

N MALE 14 COUGH

8.05 AM

OPD 5

6 MRS. RAO FEMALE 45 REF VIP OPD 9

CONTINUATION OF THE SAME EXAMPLE OF SERIAL / HEAP / PILE FILE ORG FOR BETTER ASSIMILATION OF SEQUENTIAL FILE ORGANIZATION SEQUENTIALLY ARRANGED AS PER THE TIME OF ENTRY AND “SERIAL NUMBERING” IS DONE ACCORDINGLY

NOTE:- PRIMARY KEY - THE TIME OF ENTRY

THE INDEXED SEQUENTIAL / HASHED FILE

CharacteristicsEach record of a file has a key field which uniquely identifies that record.An index consists of keys and addresses.An indexed sequential file is a sequential file (i.e. sorted into order of a key field) which has an index.A full index to a file is one in which there is an entry for every record.

THE INDEXED SEQUENTIAL FILE ORG



AMOPD


AMOPD


95 MISS HUSSAI

N MALE 14 COUGH

8.05 AM

OPD 5


CONTINUATION OF THE SAME EXAMPLE FOR BETTER ASSIMILATION OF THE INDEXED SEQUENTIAL / HASHED

FILE ORGANIZATION



AMOPD


AMOPD


95 MISS HUSSAI

N MALE 14 COUGH

8.05 AM

OPD 5


SEQUENTIALLY ARRANGED AS PER THE TIME OF ENTRY AND “SERIAL NUMBERING” IS DONE ACCORDINGLY

NOTE:- INDEXED KEY - THE TIME OF ENTRY


FILE ORGANIZATION

4 MR. ISSAC MALE 75 REF VIP OPD 96 MRS. RAO FEMALE 45 REF VIP OPD 91 MR. SUBBA MALE 35 FEVER 8AM OPD 15 MISS HUSSAIN MALE 14 COUGH 8.05 AM OPD 53 MRS. ANNA FEMALE 45 COLD 8.02 AM OPD 32 MISS ARYA FEMALE 15 EYE 8.01 AM OPD 2


FILE ORGANIZATION SEQUENTIALLY ARRANGED AS PER VIP & REGULAR ENTRY AND “SERIAL NUMBERING” IS DONE ACCORDINGLY

NOTE:- INDEXED KEY - VIP & REGULAR

THE CLUSTERED FILE


CLUSTER 1VIPs

CLUSTER 2FEMALES

CONTINUATION OF THE SAME EXAMPLE FOR BETTER ASSIMILATION OF THE CLUSTER FILE ORGANIZATION

THE DIRECT / RANDOM ACCESS

THE DIRECT / RANDOM ACCESS

WHO IS THE IT CZAR?WHO IS THE RICHEST AMONGST ALL?


CONTINUATION OF THE SAME EXAMPLE FOR BETTER ASSIMILATION OF THE DIRECT ACCESS /

RANDOM FILE ORGANIZATION

WHO IS THE GERIATRIC PATIENT?WHO IS THE FIRST PATIENT TO THE HOSPITAL?

ADVANTAGES

&

DISADVANTAGES

SERIAL / HEAP / PILE FILE ORGANISATIONADVANTAGES DIS-ADVANTAGESNEW RECORDS INSERTION FASTER

RETRIEVAL OF RECORDS TIME CONSUMING.GOOD FOR BULK LOADING UPDATING IS SLOWSIMPLE FILE ORGANISATION DELETION RESULTS UNUSED SPACESEARCH REQUIRES “ALL FILE SEARCH” – OVERLOAD ON PROCESSOR

SEQUENTIAL FILE ORGANISATIONADVANTAGES DIS-ADVANTAGES

SIMPLE FILE DESIGN ENTIRE FILE SEARCH – FOR SINGLE RECORD TOO.EFFICIENT FOR A NATURAL ORDER DATA.TRANSACTIONS HAVE TO BE SORTED BEFORE PROCESSING.STORAGE ON INEXPENSIVE DEVICES LIKE MAGNETIC TAPEOVERALL PROCESSING IS SLOW

INDEXED SEQUENTIAL / HASHED FILE ORGSNISATIONADVANTAGES DIS-ADVANTAGESFLEXIBILITY MORE STORAGEFASTER ACCESS OF VARIOUS DATA

PROCESSOR FASTER REQUIREDFASTER THAN SEQUENTIAL

CLUSTERED FILE SYSTEM FILE ORGANISATIONADVANTAGES DIS-ADVANTAGESACCESSIBILITY PROCESSOR NEEDS A SPEEDIER ONECROSS REFERENCES EASY

MORE SPACE FOR STORAGE

DIRECT ACCESS /RANDOM ACCESSADVANTAGES DIS-ADVANTAGES

ANY RECORD CAN BE ACCESSED ANY TIME.

COMPLEX THAN SEQUENTIAL

RECORD PROCESSING SPEED IS VERY FAST

NO FULL USE OF MEMORY LOCATIONS

UP-TO-DATE FILE DUE TO ONLINE UPDATING

SECURITY & BACK-UP PROBLEMS

CONCURRENT PROCESSING IS POSSIBLE

EXPENSIVE HARDWARE AND SOFTWARE REQUIRED.

TRANSACTIONS NEED NOT BE SORTED.

SYSTEM DESIGN COMPLEX AND COSTLY

FILE UPDATING DIFFICULT AS COMPARED TO SEQUENTIAL FILES.

CONCLUSION

THANK

YOU

INTRO(MOTIVATION

COULD KNOW INFO

HOW DATA GETS STORED ON CDs)

CONCLUSION

(MAY KNOW INFO)

ADVANCED SYSTEM OF FILE ORGANISATION

(MAY KNOW INFO)

FIRST FORWARD INDEX IS DEVELOPED AND THEN THE REVERSE INDEX IS DEVELOPED

VERY IMPORTANT IN BIO-INFORMATICS FIELD FOR DNA MAPPING AND REFERING.

EG 1:-WORD REFERENCES AT THE END OF BOOKS IN OLDEN TIMES, ATLASES ETC.,

EG 2 :- WORD ACCESS FILE SYSTEM.

EG 3 :- HOW A SINGLE CELL UNFOLDS INTO LARGER SPECIES IN NATURE?

INVERTED FILE ORGANISATION

EG 1 :- UNIVERSE.

MULTI RINGS FILE ORGANISATION

EG 2 :- HUMAN BODY.MULTI RINGS FILE ORGANISATION

EG 1 :- OUR OWN NATURE.

EG 2 :- AVATAR TREE CONNECTIVITY IN PANDORA.

EG 3:- DG RI (REVENUE INTELLIGENCE) MONITORING ALL TRANSACTIONS THOSE OCCUR BEYOND THE FINANCIAL LIMIT OF A PERSONS EARNING AND EXPENDING POWER THRU NETWORKING.

EG 4:- CLOUD COMPUTING .

B + - TREE FILE ORGANISATION

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