Exercises Sequence number: Change of action Change of Log entry added Log entries addeod cached database stable database to log buffer PageNo: SeqNo] [PageNo: Seg No] LogSeaNo: action LopSed to stable log 1: begin (ti 2: write(p, th 3: write(a, th) 4: commit(t1) 5: flush(P) 6: begin(tz : write(p, t2 8: write(r, t2) 9: checkpoint 10: commit(12) 11: begin(ts) 12: flush(p) 13: write(p, ts) 14: write(q, t3) 15: flush(a) 16: write(r, ts) Figure 13.20 Sample history for Exercise 13.1