onet a next-generation dbms kernel for query-intensive

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Page 1: onet A Next-Generation DBMS Kernel For Query-Intensive

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Page 11: onet A Next-Generation DBMS Kernel For Query-Intensive

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contract productdate

5453554551213123

1008782310032423

citypricename

New YorkWashington

HouseTravelJones

Smith

client

find client

12302346 10042334 Eno Redmond Car

10032112

OLTP queries:

columns ofjust one row.

Boston CarDoe1001323245447894 insert query

update queryBerkeley

95371001 10032112 Chen Seattle House lookup query

37611373 10987097 Gotz

access all

Redmond

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contract product

sumclaims

while grouping by

date claim cityclient

select those tuplessold after march 21

OLAP query:

almost all rows.few columns ofaccesses only acity and product

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operating system

file I/Oand locking

processes, threads(virtual) memorymanagement synchronization

query

lock manager

query executor

query optimizer

query rewriter

DBMS query language parser

query tool

buffer manager

answer

recovery manager access methods

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Page 23: onet A Next-Generation DBMS Kernel For Query-Intensive

��� ������� ����� � � � � �������� � ��� ��� ��� �

lock manager

query executor

query optimizer

query rewriter

DBMS query language parser

buffer manager

access methodsrecovery manager new index

new functions

new rules

new atomic types

new syntax

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Page 24: onet A Next-Generation DBMS Kernel For Query-Intensive

� �� � ��� � ���� � � � � � � � � � � ��� � ��X

extensionmodule

DBMS processDBMS process

extensionmodule

communicationinter-process

moduleextension

DBMS process

user process

safe java extensibilitysafe extensibility through separate address spaces

fast&unsafe extensibility

Java Virtual Machine

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Back-End (Monet)

Front-End (SQL)

MIL

SQL answer

lock manager

query executor buffer manageraccess methods

query optimizer

query rewriter

query language parser

query tool

recovery manager

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Page 46: onet A Next-Generation DBMS Kernel For Query-Intensive

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OLAP Tool Data Mining Tool

order_day

item_price

item_tax

item_order

order_discount

ORDER

ITEM

full verticalfragmentation

back-endMonet

SQL front-end

table Order(date day; float discount);

relational model

table Item(float tax; float price;rowid order);

}

ODMG front-endobject oriented model

class Item { attribute float tax; attribute float price; relation Order order;}

attribute date day; attribute float discount; relation Set<Item> items;

class Order {

MIL Language

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Page 50: onet A Next-Generation DBMS Kernel For Query-Intensive

� � � � � � � ��� � � �8�

kernelfeatures

Standard modules

user-defined

user-defined

iterators

user-defined

comm

unicationm

odule

atomsaccelerators

hash

BAT

Alge

bra

BAT

typesatomic

ratorsaccele-

BAT updates

int oid str ...

operators

iterators

module transaction

batloop

Extension modules

{| parblocks |}{ blocks }

[map]()

{pump}()

procedureswhile(..) loopsif..then..else

tree

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Page 51: onet A Next-Generation DBMS Kernel For Query-Intensive

��� ������� ����� �� ��� � � � � � � ��� � � ���

101102103104105

oid float

0.000

0.1751000.000.000.175

0.0000.100.100.00

0.065

0.000.065

0.101000100110021003 0.00

10061007100810091010

0.00

float04.7511.5010.2075.0002.5092.8037.50

0.0017.9922.33

0.10

1004

10001001100210031004

10061007100810091010

1005

oid

1005

04.7511.5010.2075.0002.5092.8037.5014.2517.9922.33

oid

0.10

14.25

0.000.000.000.100.100.000.000.000.10

4/4/989/4/981/2/98

7/2/989/4/98

1/2/98

0.175

0.175

42.67

0.000

0.065

0.065

float100101102103104105

oid date4/4/989/4/981/2/98

7/2/989/4/98

1/2/98

151413121110

151413121110

42.67

100101102103104105

oid int

1010

111111121313131414

0.00

0.000

item_tax

price taxdiscountid order

oid10001001100210031004

10061007100810091010

1005

1010

111111121313131414

int

order_discount

order_dayorder_id

day

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BAT management

ATOM interface

execution control

thread managementjob-queue

MIL interpreting

session management

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module.so module.soalgebra transaction

client listener

MIL parsing-tablesprocedure management

extension modules

MIL interpreterMIL sessions

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variable-size atoms

offsetinteger

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Page 71: onet A Next-Generation DBMS Kernel For Query-Intensive

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bit chr sht int oid void

oidintshtchr

chr sht int void str

logical types

physical typesenum1[bat] enum2[bat]

lng strdbl

strlngflt dbl

dbllngflt

flt

implementation types

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Page 72: onet A Next-Generation DBMS Kernel For Query-Intensive

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chr str

divorcedsinglemarried

widow

0123

married100oid str

101102 married

divorced103104 married105 widow

BUN Heap

010203

columndescriptorseqbase=100

type=VOID

single

encodingtype=enum1[x]

BAT ’x’

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W n<6F8)87PJ8),R*B$�69,c&7*BQZ1l&)69,ZP4Mq*B$T&76987QR69>+*B1[&76D8)69,7^+Sy&/.0(C1[8014.w&)6F8)*B,c&7*-.F, 7T^+*-.H@GSK\N3+8)P43214IJ1l&)6`*K$.@PJQ_32SK6FE 7T^+6987*B69,�;�(+6F8)6�&)(+6�6L,X&)*KQZ1[&769,|P[MoPJ$+6�PJ3C698)1[&7PJ8�1[8)6�.F14SB.F^+S-1l&76L>RMO8)P4Q�321[801[Q_x6@&)6F80, &)(21l&t14876�&7(+69QR,76FSBk46L,~&7(+6<8)69,7^+Sy&vP[MC3+8769kG*KPJ^2,i69,c&7*BQR1[&76L, . #?: f � 0 n�zG^2.0(r69,c&7*BQR1[&7*BP4$6F8)87PJ8),|SB6914>`>5*B8)69.w&)SK\a&7PZ;�8)P4$+IR>569.F*B,7*BP4$2,<QZ14>+6uAG\Z&)(+6gP43+&7*BQ_*EDF6989n

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<t8)P4A2SK69QR,a�/1[$2> W 14876a>+691[SK&b;�*K&7(�AG\�&7(+6a&)14.@&7*-.F14S�3+(21J,c6a1[&b8)^+$5x�&7*BQ_6J:�,cP*K&r.91[$�&)1A@46*B$T&7Pb1J.F.FP4^+$T&�&7(26�,7\G,c&769Q�,c&)1[&76JniUDPJ$+6@&HQ ,�3CPJSK*-.@\RP4M QZ1[&76F8)*-1[SB*LD9*K$+Im14SKSC876L,c^2Sy&0,t$+Pl;}AC6L.@PJQ_6L,1`AH6F$266a+&Ln�p�(26F$�1[$�PJ3C698)1[&7PJ8m,X&01[87&),9:~1[SBS�*B$5MOPJ87QZ1l&)*KPJ$�1[AHP4^5&m*K&),b321[801[QR6@&)6F80,q*B,.@G$+Pl;�$on�<(26_PJ35&7*BQR*LDL1l&)*KPJ$�>+69.@*-,7*KPJ$2,g1[8)6rAC14,769>jP4$j876L1[S�*B$5MOP48)QZ1l&)*KPJ$o:o$+P4&mP4$�69,c&7*BQZ1l&76L,FnZ�<(+*-,g*-,&)(+6DQZ1[*B$ >5*LMH698769$2.@6DAH6@&X;=6F69$�P4^+8/143+3+8)PJ1J.0(N1[$C>}&7(+6?,7P[x%.F14SKSB69> Q .0(+PGPJ,76@xh3+SB14$NPJ3C698)1[&7PJ8OQ>+\T$C1[QR*B.o7T^+6F8)\DP43+&7*BQ_*ED91[&7*BP4$j1[3+3+8)PJ1J.0(P[M . �up8T f :�: � f �2: elB�f T 0 nr#%$?&)(+6 Q .0(2PTPT,c6Fx�32SB14$PJ3C698)1[&7PJ8OQ2143+3+8)PJ1J.0(o:[�X^2,c&qAC6FMOP48)6�7T^+6F8)\`[email protected]^5&7*BP4$ :C&)(+6_69,c&7*BQR1[&76L,�PJ$D&7(+6rA214,76bPJ3C698)1[&7PJ8),14876q^+3 >+1[&769>o:H14$2>`kl1[8)*B14A+SK6L,�*B$`&7(+6.7T^+6987\�1[8)6gACPJ^+$2> £ &7(26F$?1R$+69; 7J^26F8)\{PJ35&7*BQR*LDL1l&7*BP4$`*-,>+P4$+6uP4${&7(+6g69$T&7*B876�&78)6F6u&7PZ,76F6q;�(+*-.0(�14Sy&)6F8)$21l&)*KkJ6�*-,<AH69,c&9nt�<(+*-,�1[3+3287PT14.0(a(+69$2.@6qQZ1N@J69,<1>+69.@*-,7*KPJ$A214,769>?P4$�Qb^2.0(�Q_PJ876R14.@&7^214Sv*K$5MOPJ87QZ1[&7*BP4$D&)(21[$j$+P48)QZ1[S�H \ &D(+6F$2.F6_14SKSB6FkG*-1l&)69,3287PJA+SK69Q PJ$+6 &{A2^5&u1J,�*K&�*-,��X^2,c&u14$DP435&)*KQR*ED91l&)*KPJ$?.@SBPJ,76F8�&7PZ&)(+6bQRP4QR69$J&�P[Mt6@E56L.@^5&)*KPJ$o:C*K&,c&7*BSBSo,c^RM 6F80,�*B${69878)P480,=QZ14>56qAG\/6L,X&)*KQZ1l&)*KPJ$/MO^2$2.w&)*KPJ$2,�*B${&)(+6gQRP5>56FS O 3+87PJA+SB6FQ W Pwn#h&g*B,q*BQR3CPJ8c&01[$T&u&7P`$+P[&)6b&)(21l&m,76F32148)1[&7*B$+Ia&)(+6 7T^+6F8)\DP43+&7*BQ_*ED91[&7*BP4$�*K$�1{,c&7801l&)6FIJ*B.91[Sv1[$2>&014.@&7*-.F1[SC3+(21J,c6�1J,7,7^+QR69,�&7(21[&�&7(26�,c&7801l&769I4*-.F14S+3+(21J,c6�.91[$a>5Pb;�*y&)(+P4^5&=3+(G\5,c*-.F14S2>56@&01[*BSB,9n��<(+6&01[8)I46F&=P4MiPJ35&7*BQR*LDL1l&7*BP4$D.91[$+$+P4&�AC6qMOPJ87Qr^+SB1[&76L>{*B$�&76987QZ,<6@E56L.@^5&)*KPJ${&)*KQR6J:214,<&)(+*-,�>56F3H6F$C>+,PJ$�&7(26 O 3+(G\5,c*-.F14S Pb1[SBI4P48)*K&7(+QZ,_.0(+PJ,76F$on � ^2,76@MO^+S�1[SK&76987$C1l&7*Bk46/&)1487IJ6@&r*-,_QR*K$+*BQR*LDL1l&)*KPJ$VP[M&)(+6$G^+QrAC698{P4Mq*B$T&76987QR69>+*B1[&76D&)^+3+SB69,{I46F$26F801l&76L> ns#%$�&7(2*B,{.F14,764:<&)(+6?3287*-.@63C1[*->}MOP48/PJ^+8,7*BQ_32SK*LaC.F1[&7*BP4$R*-,�QZ1N@G*K$2Iq&7(+6�1J,7,7^+QR35&)*KPJ$r&)(21l&�&7(+6�AH69,c&�3+S-1[$a.FP48)876L,c3HP4$2>2, &)Pg&7(26�,X&)8)1[&76FIJ\&)(21l&�IJ6F$+698)1[&769,|&)(+6gSK6L14,c&�$G^+QbAH6F8�P4Mi*B$T&76F8)QR69>5*-1l&)6u&7^+3+SB69,9n�<(+6D$+P4&7*BP4$'P[Mg,c&7801l&769I4*-.F14S<14$2>N&)1J.w&7*-.F14S�7T^+6F8)\VPJ35&7*BQR*LDL1l&7*BP4$',7(+P4^+S->}$+P[&aAH6.@PJ$5MO^2,769>;�*K&7(/&7(+6u.@S-14,),c*-.F14SC$2P[&7*BP4$/P[MoSBP4I4*-.F14SC14$2>a3+(G\5,7*B.91[S�7T^+6987\RPJ35&7*BQR*LDL1l&7*BP4$ . �u801 f 241 0 :T*B$/;�(2*B.0(&)(+6aSBP4IJ*B.91[S�3+(21J,c6a>+6F3H6F$2>+,bP4$�(+69^+87*-,c&7*-.F,b14$2>�&7(+6/3+(G\G,7*-.F1[S�3+(214,76ZP4$�1.FPJ,c&mQRPG>+6FS�n{#%$&)(+6�,c&7801l&)6FIJ*B.91[S�3+(C14,76;|6j1[SB876L14>5\}>56@&)6F8)QR*K$+6?&7(+6�6FkJ6F$T&7^214S�6FEG6L.@^5&)*KPJ$ P480>5698/P[MgSBP4IJ*B.91[S14SKIJ6FA+801jP43H6F801l&)*KPJ$2,F:�,7P�&7(+*-,{P435&)*KQR*ED91l&)*KPJ$�3+8)PG.F69,),Z*B$2.@SB^2>56L,aAHP[&7(�SKPJI4*-.F1[S�1[$2>'3+(G\5,7*B.91[SPJ35&7*BQR*LDL1l&)*KPJ$on pj6jQ_*BI4(T&{MOP48�*K$2,c&)14$2.@6j^2,76�.FPJ,c&{QRP5>56FS-,a&)PN6L,X&)*KQZ1[&76&)(+6�,c69SK6L.w&7*BkG*y&)*K6L,P4M=kl1487*BP4^2,gU#XW�P43H6F801l&)P480,Fn/�<(26a1[A2,c&78014.@&7*BP4$�P[M�1[SBSt3+(G\5,c*-.F14S�1[SK&76987$C1l&7*Bk46L, O 6Jn ICnK:iQR6F8)I46@x0:(C14,7(5x 1[$2>R$269,c&769>_SBPGP435xB�XP4*B$�Pi*B$J&)Pq&7(+69*K8=,c*B$+IJSK6�SBP4IJ*B.91[S5P43H6F801l&)P48 O �XP4*B$�PH�X^2,c&|.F14^2,769,�1g,c&78)P4$+I8)69>+^2.w&)*KPJ${P4M &7(26m,c6L1[80.0({,73214.F64:5(+69$2.@6m14SKSB6FkG*-1l&76L,=3+87PJA+SB6FQ &)(+8)6F64n

Page 74: onet A Next-Generation DBMS Kernel For Query-Intensive

��� � �� ����8� ��������� ��� �� ������� ����������������-� U

� ,�,c&7801l&769I4*-.`P435&)*KQR*ED91[&7*BP4$ *-,/1�&014,?@NP4Mg&7(+6?MO87PJ$T&cxh6F$2> :<MO^28c&)(+6F8`>5*-,7.F^2,7,7*BP4$�P[Mg*K&/M]14SKS-,PJ^5&),7*->56u&7(+6m,).@PJ3C6qP[Mi&7(2*B,<&)(+69,7*-,Fn ���� �� � �'��� ������� �8���,��� �M�,��)�$ ) A�'��)���*�-�i14.@&7*-.F14SiPJ35&7*BQR*LDL1l&)*KPJ$2,q*KQR3+SB\D&)(21l&g&)(+6Z*KQR3+SB6FQR69$J&01l&)*KPJ$2,qP[M|&7(+6aUD#XW}PJ3C698)1[&7*BP4$2,�&7(26FQ_x,76FSBk46L,�>56L.@*->56b1l&�87^+$+x &)*KQR6m(+Pl;"&)(+6F\`;�*BSKS~3+87P5>5^C.@6g&)(+6F*B8�SBP4IJ*B.91[So8)69,7^+SK&9n�zGPJQ_6rUD#XW�P43H6F87x1[&7PJ8),�.91[$D6@E53+SBP4*K&�&7(26r>56L.@P4QR3HPJ,769>�$21[&7^+8)6gP[Mv&7(26 d<� ��>+1l&01Z,X&)87^2.@&7^+8)6 O �i*BI4^+8)6"+n W P<1[$2>1J.w&)^21[SBSK\Z3287P5>5^2.F6q&7(+69*K8�8)69,7^+SK&�;�*y&)(+P4^+&�>5P4*B$+IZ1[$G\Z8)691[S ;=P48`@ n

ORIGINAL BAT

MIRRORED COLUMN VIEW

descriptor

descriptorcolumn

descriptorcolumn

head head

BUN

tail

tailhead

normal

REVERSE

REVERSE

normal

BAT descriptor

BAT descriptorBAT descriptor

BAT descriptor

tail

tail

head

ORIGINAL BAT

VOID COLUMN VIEW

columndescriptor

descriptorBUN

descriptorcolumn

descriptorcolumnVOIDhead tail

head tail tail

tailhead

head

REVERSE

REVERSE

normal

BAT descriptornormal

BAT descriptor

BAT descriptorBAT descriptor

�i*KIJ^+8)6+n +�Ga��bYhY �OY O SK6FM�&HP�14$2> a (OY��_*BQR3+SB6FQR6F$T&)1[&7*BP4$2, O 8)*KIJ(J&KPwn

D1B��6B D1CHB��G7�B�� &7(+6 d<� �j>+1l&01�,X&)87^C.w&7^2876t.FP4$T&)14*K$2,H&X;=P d<� ��>+69,).@8)*K35&)P480, O ,76F6��i*BI4^+8)6.5n W P £P4$+6 �F[[Zw� Yl� 14$2>_P4$+6 Z`G � G6ZHJ�G0� nt�<(269,76<&X;|Pm>56L,7.F87*B35&)P480,�>5*{M 6F8|P4$+SB\b*B$R&7(C1l&�&7(26F\_(21�k46&7(+69*K8�.FP4SB^+QR${>56L,7.F87*B35&)P48<3CPJ*K$T&)6F80,=,7;<1[3+3H69> n � ,�,c^2.0( :G&7(+69\a87693+8)69,76F$T&�&X;=P_>+*{M 6F8)6F$T&� I_G���J P4${&7(+6b,)1[QR6 d<� �qn2�<(+6g*BQR3+SK69QR6F$T&)1[&7*BP4$`P[M~&7(+6bU#XW Y1_*�1_HY +O__P43H6F801l&)P48<P4$`1d<� �NQZ1A@469,v^C,c6�P4MC&)(+69,76�kG*B6F;�,9n~#h&o�X^C,X&o�X^2Q_3C,�MO8)P4QYPJ$+6�kG*B6F;N&7Pq&7(26�P[&)(+6F8 £ QZ1A@T*B$+I&7(+*-,�PJ3C698)1[&7*BP4${MO87696uP4Mi.FPJ,c&9n

K 7 D�D14�D1B� �G7�B�� �<(+6'a �bYhY��OY�UD#XWaP43H6F801l&7PJ8 .@8)691[&76L,o1�$+69; d=� ��>+69,).@8)*K35&)P48 &)(21l&i(214, ACP4&7((+691J>�14$2>�&)14*KSt.FP4SB^+QR$�>+69,).@8)*K35&)P48q3HP4*B$J&)6F80,q3CPJ*K$T&)*K$+I�&)P`&7(+6ZPJ87*BI4*B$21[Sv(+6L14>j.@PJSK^+QR$>569,).@8)*B35&7PJ89n��<(+6q8)69,7^+Sy&)*K$2I d<� �"1[3+3H69148),=&)PR(21�k46�&X;|PR*->56F$T&)*B.91[S .FP4SB^+QR$2,Fn

�8467���G7:B�� ,�*B87&7^214S&�����Lxh,�1[8)6?*B$T&78)PG>+^2.@6L>�AG\N&)(+6 a (OY��VP43H6F801l&)P48L:<&7(21[&`.F876L1l&)69,/1V$+6F;.@PJSK^+QR$?>+69,).@8)*K35&)P48�,c&)1[&7*B$+IZ&)(+6r.FP4SB^+QR$?>+1l&01R&X\G3C6b&7PaAH6 � �����Gn � ,-� ���#�Zkl14SK^+6L,�14876.@PJQ_32^5&76L>b�X^C,X&�AG\{3CPT,c*K&7*BP4$o:+&7(+6m>+1[&)1R*B$�&7(+6 d�vw (+69143�*-,�$+P4&�SKPGPV@469>�1l&L:C14$2>{.91[$&7(+69876FMOP48)6g,c(214876�&7(26 d=vw (+69143�MO87PJQ�&7(+6gPJ3C698)14$2> d=� �qn

CH3:7�9IB��G7:B�� C �<(+6 +E,��hVO_gP43H6F801l&)P48=1[SB;=1�\5,t8)6@&)^+8)$2,|1bkG*K69; d=� �q:G;�(+PT,c6 d�v,w (+69143a3HP4*B$J&0,&7Pj1(+PJ87*EDFPJ$J&01[S�,7SB*B.F6/P[M d�vw (+6L1[3�P4M�*y&0,.aC8),c&r32148)14QR6@&76989n�<(26�,)1[QR6Z&)69.0(+$+* 7T^+6*B,_^2,769>�;�(+6F$}1 d<� � .@PJSK^2Q_$}.@PJ$J&01[*B$2,b1J,7.F6F$2>+*K$+I�kl1[SB^+69,_1[$2>N1801[$+IJ6@x +O_�,H_^VbT`P48� Y�(��UaS_OZhT`*-,g>5P4$26ZP4$j*y&LnZ#%$�,7^2.0(�.F1J,c6L,F: ;=6q�X^2,c&m3+8)PlkT*->56R1[$�1[SK&76987$C1l&7*Bk46 d�v,w >56Fx,7.F87*B35&)P48=&7(21[&�3CPJ*K$T&0,�1l&<&7(C1l&�,7^+A2,76@& O ,76F6g�i*BI4^+8)6 5n UVPwn

BDN��'KMB D1;�=O7�46N��G7:B�� C d=� ��,t;�*y&)(Z6F$G^+QR6F801l&)*KPJ$b&X\G3H69,�3+8)PlkG*B>+6=kl1487*BP4^2,vPJ3+3HP487&7^+$+*K&7*B69,�MOP48kG*K69;�P435&)*KQR*ED91l&)*KPJ$2,9n :|P4$2,7*B>+6F8m&)(+6/^2$21[8)\��hY �b`��PJ3C698)1[&7PJ89:~&7(21[&r8)6F3+S-14.F69,q&)(+6a&01[*BS��� :�� �&z �"!#!%$ D�:!<TBXH�: ­ :!U2H U!78@0B6G!@A@078D�:�D�e @0G!B0d&H @ g @m=0<6; K H�@0<6U2D�:&�&D�:!<C=vh!ij7 =Ad-=Ad!<.H�U!U!7 =A78D�:�H�p H�78;

D�e <6wQM!p8D�7 =A78:!9q@ g :!<6>A9 g-K <C=WiE<6<6:; G!p =A78M!p8<IFQG!<6>A78<X@('�7LY <�Y*;SG!p =A7 )WFQG*<X> g D�M*=A78;�78uvHr=A78D�: Y

Page 75: onet A Next-Generation DBMS Kernel For Query-Intensive

UVU �������������� �������� ������� ��������������������� ����

REVERSEBAT descriptor BAT descriptor

tail103

105

oid100101

103100headtailhead

BUNdescriptor

102 100

104 BUN

head tail

100

tail

REVERSEBAT descriptor BAT descriptor

76

101

2429

105

oid

3742

descriptor

1210

68

head

99

70

14

3

72

22

1

BUN Heap

columndescriptor descriptor

column

ORIGINALBAT

YNN

N

N

N

YY

Y

N

Y

NNY

Y

BUNdescriptor

first last

head tail head tail

first last

normal REVERSE

normal

BAT descriptor BAT descriptor

married100oid str

101102 married

divorced103104 married105 widow

single

logical BAT

BUN Heap

010203

underlying data structure

seqbase=100type=VOID type=enum1[x]

chr str

divorcedsinglemarried

widow

0123

type=enum1[y]

SLICE VIEW

(columndescriptor)

(columndescriptor)

chr0123

oid100101103105

encodingBAT ’y’

ENUMERATION VIEW

group(bat)

encodingBAT ’x’

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Page 76: onet A Next-Generation DBMS Kernel For Query-Intensive

��� � �� ����8� ��������� ��� �� ������� ����������������-� U ]

tail(b) = value

lo <= tail(b) <= hi

lo <= tail(b) < hilo < tail(b) < hi

lo < tail(b) <= hi

tail(b) > valuetail(b) >= value

implementations:

select()operator:1 MIL

2 overloadedoperators:

select(bat,value) select(bat,lo,hi,l_inc,h_inc)

X in { chr, sht, int, lng, str, ADT }

positional lookup

searchbinary

Ttreesearch������� ���

hashlookup

X_scan_equi_select()

X_hash_equi_select()

positional_equi_select()

Y_binsearch_equi_select()

Y_Ttree_equi_select()

algorithms:Y_Ttree_Z_select()

Y_scan_Z_select()

searchbinary Ttree

searchscan

23 operator

(1*5 + 6*3)

Z

Y in { chr, sht, int, flt, lng, dbl, str, ADT }

Y_binsearch_Z_select()

(6+6+1+8+8 + 6*(8+8+8))

173 expanded

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Page 77: onet A Next-Generation DBMS Kernel For Query-Intensive

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of join index

positional joins with sequential access

result table

prior computation

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Page 119: onet A Next-Generation DBMS Kernel For Query-Intensive

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6 8 11 17 18 21 31 32 40 43 44 86 87 88 93 99

depth 4

depth 3

depth 2

depth 1until depth=cache misses

log2(N) −

lastlog2(C)−1recursion levels incache.

cache size (C=8) cache size (C=8)

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sequential

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swapped elements (log2(C)−1)

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mark.reverse

7

of join indexprior computation

’spanned’ cluster size in sourcecolumn is chosen such that it fitsthe cache, as the positional joinsaccess them randomly

result table

positional joins with clustered access

CACHESIZE

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Page 123: onet A Next-Generation DBMS Kernel For Query-Intensive

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35

146

2

value BAT

cluster end positions

cluster start positions

result BAT

insertion window

current elementunder consideration

35

0 gh1

23

0

45

12345

40215

efgfhe

123

0

45

46

2

put e at 3; advance in cluster

2345

0

0215

3 efgfhe

123

0

45

gh1

23

0

45

e

next cluster (4 is outside window)

35

146

212

45

040

15

3 efgfhe

123

0

45

gh1

23

0

45

e

put f at 2; delete empty cluster;advance window; reset

ghf

f

123

0

45

1234

04021

3 efgfhe

123

0

45

6 5

put e at 5; delete empty cluster

e

advance window; ready

123

5

0402

5

3 efgfhe

123

0

45

g123

0

45

34

046

2

put h at 1; advance window; reset

12

45

040

15

334

0 efgfhe

123

0

45

g123

0

45

46

2

next cluster (2 is outside window)

1

345

04

215

3 efgfhe

123

0

45

123

0

45

46

224

0

put g at 0; advance in cluster

12345

40215

efgfhe

123

0

45

123

0

45

46

224

0

next cluster (3 is outside window)

2345

0

0215

3 efgfhe

123

0

45

ghfe

123

0

45

62

51

put f at 4; delete empty cluster

MEMORY ACCESS PATTERN:

− single multi−cursor sequential

− cacheable random access in result−BAT(clustered in insertion window)

− repeated sequential scan over clusterstart/end array (which generally is small enough to be cacheable)

id BAT

scan over id−BAT and value−BAT

123

0220

2

0 3

1 4

3 2

5 5

4 13 2

2 0

01 4

3

borders BAT

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B? = 0I: 7 7 E - - � = ?�(*<B&/%' �+ = @ (�( 8 %')�?�(}> )�(�(�+$ �9 7N�A:Rq�BA 7 8 ( 9/9 ��� , ( 8 E ��� 8 ����� = &�C% & = <*) = �/)�� &/@ < @ <*)�( +�@ �5) = 9 . = ?�(*<B&/%I� = &/%�� (�� � ��� ,�- �����������D��B? = +$�/)�� &/@ < @ <*)�( +�@ �5) = 9 . = ?�(*<B&/%I� = &/%�� (�� � ��� , ������������ c2������/)�� &/@ < @ <*)�( +�@ �5) = 9 . = ?�(*<B&/%I� = &/%�� (�� � ��� , (:���������> @ (*)�(�2B%S65) = )�(�2*% ( � @ ( + � @ ( +�)�(/) = ( . 2B(B@ ��2*)�Cm@ +$ B@ (1& = <B) = � = &/%�� (�� � : ���2B?/( +�@ +.� )�(�2*% ( � @ ( + � @ ( +�)�(/) = ( . = ?�(*<B&/%I� = &/%�� (�� � E ���)�K�+�)�(B<*)�<�� = @ ;�) <�6B> <*)�;�@ %'?�> . ( - = ?�(*<B&/%I� = &/%�� 7 ������� ����� � 7�7�7�7�7�7 � E ���<B@ c;�&/2B( + )�(�2*% ( � <�6*> � <*)�;�@ %'?�> ( . = ?�(*<B&/%I� = &/%�� ��� ����� � ��� (����+�?DK )�(�2*% ( � <�6*> � <*)�;�@ %'?�> ( . = ?�(*<B&/%I� = &/%�� ��� ����� � ��� � . �= )�+�2 = (�Tp?�( ;! = ;! B? = 0 ( 7 ( . O - O 8 O � O5& = O UVO> @ (*)� �+�?�+�2� ;! = ;! B? = 0 ( 7 ( . O PSO5& = O � O & B@ �p<B?�+�) )�(�2*% � <B?�+�) � <*?6+A) . = ?�(*<B&/%I� = &/%�� �+A? = + < (�� � )�(B< � 8 �D�;�&�%'%'@ +�<*?6+�) <*?6+�) <*?6+A) . = ?�(*<B&/%I� = &/%�� �+A? = + < 8 ��� � )�(B< � - (��= )�;�)�@ �r+�<*?6+�) )�(�2*% � <B?�+�) � <*?6+A) . = ?�(*<B&/%I� = &/%�� �+A? = + < (�� � )�(B< �.7 (�� & B@ �B@ (� �+ = 2*;�+ )�(�2*% ( � �+ = � ;! B? = 0 E 7 ( . = ?�(*<B&/%I� = &/%§9L,t(� �+ = 2*;�+�@ &�(� & B@ �B%'&�<*) )�(�2*% ( � �+ = � ;! B? = 0 (:� 7 ( . = ?�(*<B&/%I� = &/%n:LG1&�<*)� ;�&�%'%')�( + �+ = � ? = ;! B? = 039/9 7 8 8 - = ?�(*<B&/%' �+ = @ (�( 8 %')�?�(}> )�(�(�+$ :=@?@WK�9? ����� -/- ( -�9 ��� ,�- 8 ����� 8 ����� = &�C% (B?�+�@ &�(���)�� &/@ < @ <*)�( +�@ �5) = 9 . 2B(B@ ��2*)�� = &/%�� �9� � 9 �(B?/%') �+ = ;! B? = 0 E 7 ( ( 2B(B@ ��2*)X �+ = @ (�( 8 %')�?/(�> )�(�(6+$ 1:= )�(�@ &/(��/)�� &/@ < @ <*)�( +�@ �5) = 9 . = ?�(*<B&/%I� = &/%�� ��� � 9 �;�&�%'%')�( + �+ = � ? = ;! B? = 0 ( E 7 (���� (�� 9 = ?�(*<B&/%' �+ = @ (�( 8 %')�?�(}> )�(�(�+$ 7 EW4Jr�:?YNZW ( �� ( 8 E = &�C% = )�(�@ &/(��/)�� &/@ < @ <*)�( +�@ �5) = 9 . 2B(B@ ��2*)�� = &/%�� �9� � 9 �(B?/%') �+ = ;! B? = 0 E 7 ( ( - 2B(B@ ��2*)X �+ = @ (�( 8 %')�?/(�> )�(�(6+$ 1-;�&�%'%')�( + �+ = � ? = ;! B? = 0 ( E 7 (���� (�� 9 = ?�(*<B&/%' �+ = @ (�( 8 %')�?�(}> )�(�(�+$ 7 EA��B[\?YNZW ( ( - ( . E = &�C%

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Page 146: onet A Next-Generation DBMS Kernel For Query-Intensive

�5� �M� �S�^U�� ������ � ������l������ �O��¤�M�� �������� �m� ���"%� © h B

update ORDERS set TOTALPRICE = 15,000.00 where ORDERKEY = 1000003

delete from ORDERS where ORDERKEY = 1000001

insert into ORDERS (ORDERKEY,TOTALPRICE) values (1000006,965.25)

insert into ORDERS (ORDERKEY,TOTALPRICE) values (1000007,100.00)

(automatic synchronize of inverted list on ORDERS.TOTALPRICE)

basic relational table storage inverted list index storage (per column)

100101102103104105

void dbl17,500.00

850.7525,300.00

0.00825.00

12,371.62

oid103104101105

102100

25,300.0017,500.0012,371.62

850.75825.00

0.00dbl

oid103104101105

102100

25,300.0017,500.0012,371.62

850.75825.00

0.00dbl

oid dbl103104101105

102100

25,300.0017,500.0012,371.62

850.75825.00

0.00

101oid dbl

850.75

101oid dbl

850.75103 0.00103 0.00

101oid dbl

850.75103 0.00

oid dbl103 15,000.00

965.25101

103 15,000.00oid dbl

101oid dbl

850.75103 0.00

oid dbl103 15,000.00

965.25101106 100.00

oid dbl

oid dbl oid dbl

oid dbl oid dbl106104101105

100103

17,500.0015,000.0012,371.62

965.25825.00100.00

oid dbl

102 25,300.00

I_ORDERS_TOTALPRICE D_ORDERS_TOTALPRICES_ORDERS_TOTALPRICE

100101102103104

void oid

105

100101102103104105

void dbl17,500.00

25,300.000.00

825.0012,371.62

10000041000005

10000031000002

nil nil1000000

100101102103104

void oid

105

100101102103104105

void dbl17,500.00

25,300.00

825.0012,371.62

10000041000005

1000002nil nil

1000000

1000003 15,000.00

100101102103104

void oid

105

100101102103104105

void dbl17,500.00

25,300.00

825.0012,371.62

10000041000005

10000021000006 965.251000000

1000003 15,000.00

C_ORDERS_ORDERKEY C_ORDERS_TOTALPRICE

voidoid

C_ORDERS_ORDERKEY C_ORDERS_TOTALPRICE

oid101

voidnil

H_ORDERS

C_ORDERS_TOTALPRICEC_ORDERS_ORDERKEY

C_ORDERS_ORDERKEY C_ORDERS_TOTALPRICE

oid103104101105

102100

25,300.0017,500.0012,371.62

850.75825.00

0.00dbl

100101102103104

void oid

105

100101102103104105

void dbl17,500.00

25,300.00

825.0012,371.62

10000041000005

10000021000006 965.251000000

1000003 15,000.00

106 1061000007 100.00

C_ORDERS_ORDERKEY

oid void

H_ORDERS

100101102103104

void oid

105

100000010000011000002100000310000041000005

C_ORDERS_TOTALPRICE

100101102103104

void oid

105

100101102103104105

void dbl17,500.00

25,300.00

825.0012,371.62

10000041000005

10000021000006 965.251000000

1000003 15,000.00

106 1061000007 100.00

C_ORDERS_ORDERKEY C_ORDERS_TOTALPRICE

oid103104101105

102100

25,300.0017,500.0012,371.62

850.75825.00

0.00dbl

H_ORDERS

oid101

voidnil

H_ORDERS

oid void

H_ORDERS

oid void

H_ORDERS

I_ORDERS_TOTALPRICE

I_ORDERS_TOTALPRICE

I_ORDERS_TOTALPRICE

I_ORDERS_TOTALPRICE

I_ORDERS_TOTALPRICE D_ORDERS_TOTALPRICES_ORDERS_TOTALPRICE

S_ORDERS_TOTALPRICE D_ORDERS_TOTALPRICE

D_ORDERS_TOTALPRICES_ORDERS_TOTALPRICE

S_ORDERS_TOTALPRICE D_ORDERS_TOTALPRICE

D_ORDERS_TOTALPRICES_ORDERS_TOTALPRICE

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Page 147: onet A Next-Generation DBMS Kernel For Query-Intensive

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table( PART )R0

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Page 169: onet A Next-Generation DBMS Kernel For Query-Intensive

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12

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021453

012345

135024

012345

021453

01

33

012345

abbbaa

012345

abbaba

012345

.

.

.

.

.

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.

.

.

.

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012345

order

qsort

012345

1212

baabab

PIVOT.join(COL)GROUPINGPIVOT

renumbers tailfor each uniquecombination.

[4,b]

[2,b][1,b]

[5,a][0,a]

12

91011

[3,a]

0x

1x

join(*)reverse.

mark.reverse

reversemark.

radix−

radix−cluster(P=1,H=1,I=1)

borders

radix_count(H=1,I=1)

decluster

reversemark.reverse.

reversemark.

order(*)

405312

012344

GLOBALORDERING

BAT

GLOBALORDERINGBAT order(*)

.... ....

MIL−procorder(b,a)

MIL−procjoin(pivot,col)

see order implementation (chapter 5)

see radix−accelerator (chapter 6)

CTorder(p,g,c)

91011121212

405231

405231

012345

012345

91011

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Page 177: onet A Next-Generation DBMS Kernel For Query-Intensive

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database read−table

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Page 194: onet A Next-Generation DBMS Kernel For Query-Intensive

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Page 195: onet A Next-Generation DBMS Kernel For Query-Intensive

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