GDB Woche 14

GDB Woche 14

University

7 Qs

quiz-placeholder

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GDB Woche 14

GDB Woche 14

Assessment

Quiz

Computers

University

Practice Problem

Hard

Created by

Nomiez Nomiez

Used 12+ times

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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Welcher Fehler könnte hier entstehen?

Phantom Problem

Non-repeatable Read

Dirty Read

Lost Update

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Wie viele Transaktionen existieren in der folgenden Historie?

H := r3[x], r3[x], r2[x], r3[x], w1[x], c1, c3, w4[x], a4, r2[x], c2

1

2

3

4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Wie viele Transaktionen beenden mit erfolgreichem Ausführen?

H := r3[x], r3[x], r2[x], r3[x], w1[x], c1, c3, w4[x], a4, r2[x], c2

1

2

3

4

4.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Welche unten aufgeführten Operationen sind Konfliktoperationen:

H := r3[x], r3[x], r2[x], r3[x], w1[x], c1, c3, w4[x], a4, r2[x], c2

r3[x] < w1[x]

r3[x] < w4[x]

w1[x] < w4[x]

r2[x] < w4[x]

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Was sind lesende Transaktionen:

H := r3[x], r3[x], r2[x], r3[x], w1[x], c1, c3, w4[x], a4, r2[x], c2

T1 liest von T3

T2 liest von T1

T4 liest von T1

T3 liest von T1

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Was ist der korrekte Serialisierbarkeitsgraph SG(H) mit

H := r3[x], r3[x], r2[x], r3[x], w1[x], c1, c3, w4[x], a4, r2[x], c2

Media Image
Media Image
Media Image
Media Image

7.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Was sind die Eigenschaften von Eigenschaften von

H := r3[x], r3[x], r2[x], r3[x], w1[x], c1, c3, w4[x], a4, r2[x], c2

serialisierbar

rücksetzbar

vermeidet kaskadierendes Rücksetzen

strikt

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