This document appears to be a presentation about real-time transaction processing systems given by Kunal Mahurkar under the guidance of Mrs. Shaikh. It discusses key aspects of real-time transaction processing systems including how they are measured by the number of transactions they can process in a given time period, the importance of avoiding data corruption, needing modular growth to add or replace hardware/software, and different types of deadlines for transactions (hard, firm, soft). It also mentions using main memory databases and server processes.

1. Presented
by
Kunal Mahurkar
(ME)Computer Engineering,
AISSMSCOE,PUNE
Under Guidance
of
Mrs.Shaikh
(Professor)
(ME)Computer Engineering,
AISSMSCOE,PUNE

2.  General Meaning
Instance of
examples,
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2High Performance Database, (ME)Computer Dept., AISSMSCOE, Pune
Real Time Transaction Processing System

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Real Time Transaction Processing System

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Real Time Transaction Processing System

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Information
Sytem
Store data
Retrieve data
Real Time Transaction Processing System

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Measured by no. of Tx they can process in given time
Real Time Transaction Processing System

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Real Time Transaction Processing System

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No Corruption of data.
Example. 2 operators cannot sell same seat on an aeroplane.
Real Time Transaction Processing System

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MODULAR GROWTH
Growth at incremental cost rather than requires a complete replacement
Must be able to add, update or replace h/w or s/w without shutting down
system
Real Time Transaction Processing System

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Real Time Transaction Processing System

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When deadlines are included CORRECTNESS of an EXECUTION is no
longer solely an issue of d/b CONSISTENCY.
Real Time Transaction Processing System

13.  HARD DEADLINE
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=
Real Time Transaction Processing System

14.  FIRM DEADLINE
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Real Time Transaction Processing System

15.  SOFT DEADLINE
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=
Real Time Transaction Processing System

16. Wait
t1
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Will cause t1
To miss
deadline
Pre-empt
t2
T1 will
complete its
task BUT
DON’T
FORGET t2
Real Time Transaction Processing System

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Real Time Transaction Processing System

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High Performance Database,(ME)Computer
Dept.,AISSMSCOE,Pune 18
Main memory
database
Server
process

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High Performance Database,(ME)Computer
Dept.,AISSMSCOE,Pune 19

20.  Database System Concepts 6th edition _
Henry F Korth Abraham Silberschatz, S
Sudharshan
 http://www.i95dev.com/is-real-time-
processing-better-than-batch-processing/
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21. ANY QUESTIONS
THANK YOU..
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