Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

MAILINGS REVIEW VIEW DESIGN LAYOUT DESIGN PAGE LAYOUT REFERENCES T 2 12 A E'TE Aa - A A bri (Body) AaBb AaBbCcDc AaBbCdl AaBbCcDc AaBbCcc

image text in transcribed

MAILINGS REVIEW VIEW DESIGN LAYOUT DESIGN PAGE LAYOUT REFERENCES T 2 12 A E'TE Aa - A A bri (Body) AaBb AaBbCcDc AaBbCdl AaBbCcDc AaBbCcc AaBbcc Heading 1 TI Normal Title 1 No Spac... Heading 2 Subtitle IU - abe x, X A-ay. Font Paragraph Styles Consider the following schedule S, which has five transactions (T1-Ts). Only the read and write operations of objects X, Y and Z are listed. T2 Time T3 T5 1 I R(X) W(Y) 3 W(Y) Commit 4 5 W(Z) 6 R(Z) Commit 7 W(X) Commit 9 Commit 12 13 R(Y) Wix) Commit Show how this schedule behave when executed under the timestamp ordering protocol (TSO) by filling the transactions' timestamp matrix (TS) and the R/W timestamp matrix; RTS(obj) and WTS[obi). Assume TS is a logical sequence number starting from 1 and when a new transaction started, its TS value is incremented by 1 (i.e. TS=TS+1). All RAW timestamps of objects X, Y and Z are initialized to zero. Clearly show under which conditions the execution proceeds and show the final values in both matrices. Ta TS TS 1 MAILINGS REVIEW VIEW DESIGN LAYOUT DESIGN PAGE LAYOUT REFERENCES T 2 12 A E'TE Aa - A A bri (Body) AaBb AaBbCcDc AaBbCdl AaBbCcDc AaBbCcc AaBbcc Heading 1 TI Normal Title 1 No Spac... Heading 2 Subtitle IU - abe x, X A-ay. Font Paragraph Styles Consider the following schedule S, which has five transactions (T1-Ts). Only the read and write operations of objects X, Y and Z are listed. T2 Time T3 T5 1 I R(X) W(Y) 3 W(Y) Commit 4 5 W(Z) 6 R(Z) Commit 7 W(X) Commit 9 Commit 12 13 R(Y) Wix) Commit Show how this schedule behave when executed under the timestamp ordering protocol (TSO) by filling the transactions' timestamp matrix (TS) and the R/W timestamp matrix; RTS(obj) and WTS[obi). Assume TS is a logical sequence number starting from 1 and when a new transaction started, its TS value is incremented by 1 (i.e. TS=TS+1). All RAW timestamps of objects X, Y and Z are initialized to zero. Clearly show under which conditions the execution proceeds and show the final values in both matrices. Ta TS TS 1

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Refactoring Databases Evolutionary Database Design

Authors: Scott Ambler, Pramod Sadalage

1st Edition

0321774515, 978-0321774514

More Books

Students also viewed these Databases questions

Question

1. Who is responsible for resolving this dilemma?

Answered: 1 week ago