diff --git a/paper/graph_fifo_query_index.grap b/paper/graph_fifo_query_index.grap
new file mode 100644
index 0000000..932493a
--- /dev/null
+++ b/paper/graph_fifo_query_index.grap
@@ -0,0 +1,71 @@
+.G1
+copy "legend.grap"
+frame invis ht 3 wid 4 left solid bot solid
+coord y 0,500
+ticks left out from 0 to 500 by 50
+ticks bot out at 50000 "50,000", 100000 "100,000", 150000 "150,000", 200000 "200,000", 250000 "250,000"
+
+label left "Request duration with" unaligned "an index (ns)" "(Median)" left 0.8
+label bot "Number of cars in the database" down 0.1
+
+obfifo1 = obfifo5 = obfifo10 = obfifo20 = 0 # old bullets
+cbfifo1 = cbfifo5 = cbfifo10 = cbfifo20 = 0 # current bullets
+
+legendxleft  = 180000
+legendxright = 240000
+legendyup    = 400
+legendydown  = 300
+
+boite(legendxleft,legendxright,legendyup,legendydown)
+legend_common(legendxleft,legendxright,legendyup,legendydown)
+
+copy "../data/fifo_index.d" thru X
+	cx = $1*5
+
+	y_scale = 1
+
+	## fifo1 fifo5 fifo10 fifo20
+	#line from cx,$2/y_scale  to cx,$4/y_scale
+	#line from cx,$5/y_scale  to cx,$7/y_scale
+	#line from cx,$8/y_scale  to cx,$10/y_scale
+	#line from cx,$11/y_scale to cx,$13/y_scale
+
+	#ty = $3
+
+	cx = $1*5
+
+	cbfifo1  = $3/y_scale
+	cbfifo5  = $6/y_scale
+	cbfifo10 = $9/y_scale
+	cbfifo20 = $12/y_scale
+
+.gcolor red
+	if (obfifo1 > 0) then {line from cx,cbfifo1 to ox,obfifo1}
+.gcolor
+.gcolor green
+	if (obfifo5 > 0) then {line from cx,cbfifo5 to ox,obfifo5}
+.gcolor
+	if (obfifo10 > 0) then {line from cx,cbfifo10 to ox,obfifo10}
+.gcolor pink
+	if (obfifo20 > 0) then {line from cx,cbfifo20 to ox,obfifo20}
+.gcolor
+
+	obfifo1 = cbfifo1
+	obfifo5 = cbfifo5
+	obfifo10 = cbfifo10
+	obfifo20 = cbfifo20
+	ox = cx
+
+	# fifo1 fifo5 fifo10 fifo20
+.gcolor red
+	bullet at cx,cbfifo1
+.gcolor
+.gcolor green
+	bullet at cx,cbfifo5
+.gcolor
+	bullet at cx,cbfifo10
+.gcolor pink
+	bullet at cx,cbfifo20
+.gcolor
+X
+.G2
diff --git a/paper/graph_fifo_query_partition.grap b/paper/graph_fifo_query_partition.grap
new file mode 100644
index 0000000..66748ce
--- /dev/null
+++ b/paper/graph_fifo_query_partition.grap
@@ -0,0 +1,68 @@
+.G1
+copy "legend.grap"
+frame invis ht 3 wid 4 left solid bot solid
+coord x 0,5000*2 y 0,5000
+ticks left out from 0 to 5000 by 1000
+
+label left "Request duration" unaligned "for a partition (µs)" "(Median)" left 0.8
+label bot "Number of cars matching the partition" down 0.1
+
+obfifo1 = obfifo5 = obfifo10 = obfifo20 = 0
+cbfifo1 = cbfifo5 = cbfifo10 = cbfifo20 = 0
+
+legendxleft  = 1000
+legendxright = 2500
+legendyup    = 4000
+legendydown  = 2500
+
+boite(legendxleft,legendxright,legendyup,legendydown)
+legend_common(legendxleft,legendxright,legendyup,legendydown)
+
+copy "../data/fifo_partitions.d" thru X
+	cx = $1*2
+
+	y_scale = 1000
+
+	## fifo1 fifo5 fifo10 fifo20
+	#line from cx,$2/y_scale  to cx,$4/y_scale
+	#line from cx,$5/y_scale  to cx,$7/y_scale
+	#line from cx,$8/y_scale  to cx,$10/y_scale
+	#line from cx,$11/y_scale to cx,$13/y_scale
+
+	#ty = $3
+
+	cbfifo1  = $3/y_scale
+	cbfifo5  = $6/y_scale
+	cbfifo10 = $9/y_scale
+	cbfifo20 = $12/y_scale
+
+.gcolor red
+	if (obfifo1 > 0) then {line from cx,cbfifo1 to ox,obfifo1}
+.gcolor
+.gcolor green
+	if (obfifo5 > 0) then {line from cx,cbfifo5 to ox,obfifo5}
+.gcolor
+	if (obfifo10 > 0) then {line from cx,cbfifo10 to ox,obfifo10}
+.gcolor pink
+	if (obfifo20 > 0) then {line from cx,cbfifo20 to ox,obfifo20}
+.gcolor
+
+	obfifo1 = cbfifo1
+	obfifo5 = cbfifo5
+	obfifo10 = cbfifo10
+	obfifo20 = cbfifo20
+	ox = cx
+
+	# fifo1 fifo5 fifo10 fifo20
+.gcolor red
+	bullet at cx,cbfifo1
+.gcolor
+.gcolor green
+	bullet at cx,cbfifo5
+.gcolor
+	bullet at cx,cbfifo10
+.gcolor pink
+	bullet at cx,cbfifo20
+.gcolor
+X
+.G2
diff --git a/paper/legend.grap b/paper/legend.grap
index 631a796..33ab683 100644
--- a/paper/legend.grap
+++ b/paper/legend.grap
@@ -53,6 +53,44 @@ define legend {
 .ps +2
 }
 
+define legend_common {
+	xleft  = $1
+	xright = $2
+	yup    = $3
+	ydown  = $4
+
+	diffx = xright - xleft
+	diffy = yup - ydown
+
+	hdiff = diffy/4.5
+	cy = yup - (diffy/6)
+	cx = (diffx/20) + xleft
+
+	lstartx = cx
+	lendx = cx + diffx/8
+	tstartx = lendx + diffx/20
+
+.ps -2
+.gcolor red
+	line from lstartx,cy to lendx,cy
+.gcolor
+	"1k" ljust at tstartx,cy
+	cy = cy - hdiff
+.gcolor green
+	line from lstartx,cy to lendx,cy
+.gcolor
+	"5k" ljust at tstartx,cy
+	cy = cy - hdiff
+	line from lstartx,cy to lendx,cy
+	"10k" ljust at tstartx,cy
+	cy = cy - hdiff
+.gcolor pink
+	line from lstartx,cy to lendx,cy
+.gcolor
+	"20k" ljust at tstartx,cy
+.ps +2
+}
+
 define legend_fifo_addition {
 	xleft  = $1
 	xright = $2
diff --git a/paper/paper.ms b/paper/paper.ms
index 9f9ac70..3d196d1 100644
--- a/paper/paper.ms
+++ b/paper/paper.ms
@@ -1044,3 +1044,11 @@ Since this implementation of DODB is related to the Crystal language (which isn'
 .ps -2
 .so graph_addition_fifo.grap
 .ps \n[PS]
+
+.APPENDIX Common database
+.ps -2
+.so graph_fifo_query_index.grap
+.ps \n[PS]
+.ps -2
+.so graph_fifo_query_partition.grap
+.ps \n[PS]