ࡱ> <9:;`!e鐊lH<)I( UxڽZAoG~3;DD@5y )RN%ԤZP%Y)"P_Z'sfD`ln=T\ziҙݝ ^ϼyߛvƟ#pċ_>-ߟ+Wpe$~xv*F}Nտt%^O^Biynz}aI}WBտv/=[ehDtvv_[Z^:Z^ ߟ>?V*h"C $T9ϟѰ{nosəή9X Zq-\gq0-FX.܌f:o}0yo98 [|rP+O'pnY{ S{\jK_E8cH Ra+onb8~Q>r|%>(u$JI9̤n"- ͽk-@.R΀m`!hgoP1N\m~ u.[EkINė1m < c+;nѬjKOr }bMل;4Ҙ{ke[o9>}ǘg70%Zs/Љc#W̊9>3W7fݺ& m-Y>vUdV'QV[##6zr[ymd`m{VY#36,V |d_]\rMZZl ?ZsU *UBʎnnmf/Qpʎ*$n)Um#3cU2]{5MvqMx5N3kzʅ hʊxMKѰWA5=YuJ-wTL%2[ RH~iwż3 ST(5RGc֡_1xG1e50 pH٠V癖"Ll lk,~m+~O#LOm 'FNJbef'|?moiv 0>d+}(X[~j?iLEѢzhN~BZt{F~ ϰ8GܨZG+SpXtv=gmLsdzLsR9ur8=r\OǬ~/l&,-;kGq0wl̒mykGcsÙ1})KŔIB|W!WÇ'y N:siex>fazZ$OnNLI^N:5w%»'fS_탟7ypu367mz U j2p76O\4\Msљƍe`Q`.\`&2yTLz Sn1+Oк`z?=v91k?kc/_gvv>;fFh3kvJ%z5v3f;ТJ!)EߢuЏEQK~C߄N c󐐔ߢ67kG&c󡐔Z:SL焽4L!)1]m>vyDNuey&:zc1ĔO?DmU-;keYXolsT )$%|!jj"/tbدif0ltT )$%|&"j#vd|5`u>X 4O|`!>J-.0 |F)I( UxڽZAoG~3;vD >1țrM*A jhJP%Y)Jӊҋ/EVP9pUJT?X.˭s[)3–7{3f`u7K0E-`SDpr '.[q.97+x];8R?#/)u^pq^[\X«APx*j o A qvpjg2t|z_~*!MA (wSfy,§}^Erp^3, zG`+ % Ss/{0-?=}X*^7ٯf].ݖ3+_}BxbVŷ"U)P#iE{w0J^tZwA* k 8D'aoux* @I%gu!KxGRBإ{hm9; Dv4;ڎ+X|%CtwQb&FIlBcgc`&k3+Ř*9%x2`U2fUc'mV1Ut 0IL+1?Vt~h6Ĥ}hpl3ͅ6Bqͻ|GN.$G5>tVCX&t31mwϓYrFcϚQT3-E,ql&GKQ٘qx6&CT;ZWzl#KDyd64yl䑣KDb7d#Ff#ϐ9|Sd/[fl>nOO_EaAu[2\bb7Z?qk"EeHܶ='|rT,%MDo{;|msW(<Ì٘M0:ql8uedjGGwjAI,s-3&CT;"; PRaruL&%galncNjGNMmٙK&&xS1QRay#;1I㪶<Ǜ\L0bTO#uFv<@T;k; 5]5M0bT(u}x+r>E(5༘'zb jnb`!nB`]fcە)I( UxڽZAoG~3;q@@](jRhjݨ!-TIVJ\)Bp/EV-'sfDeW9Hzmk_vg޼{{;Yyp ċ_a58;ߟkWp⚽nY/9޾@s1~u#PZ\/_Cp~ Jh}O6}(݁w|E?,.,m>W.B' )/$~/Sva>+{8\ f {4?Q&[?oh.m[PnպŢ}ei>C| \u ?6>Wpǐ Fe/s_/U$Js\IIݢ'@!=*|o6Z&\)ǝ`!hgbG*!ۄ.ػEkINmgp1vԕ7iVL}Ƨa I9>OX̦lmlki̽wЉ㶲c魷cLγTM8’m-Y^qDّ+f +L^{Fɶ,p; V٪Fgܓ(n`b=F{m=nr޷NL.&-Zx-𩪄lz*GFE6Rao]Q?u8E~bfLjU+y;FA3({XW0UYW~O {ZxdYӓ%SjYQ1+&lQK3K!4LQHY~11Oǔy,]R# 4f3gZn0en50 <_#e4fm۴|a|jk`>6:Vl+4{ix?o`!$z&#k6QBI( UxڽYoE3ޘ8l>DT&)xXE>V@!¥[%Yd/"_ȅq=f )HE*`OHfvgvױNU[띝y~oo6@nr5l~.) ݼ76Sd#"e3Xˤ+N.:⣄Kk-͞`&Ŵo1 ?mh >?>øSv#{{cz=i?ƫ6@ Mk*0|K12> z3?G;(0׷ΑXq_wY<@!ey_j 0@`lkMdC#~sb!y\]_WI" bL7cf$I]9? Iuvhu2bӅX ^T@0by.c6Lك1y]h}]U>B;zՓS#٫frO9z2j${TwOF6b imߴ7wNc.vTvԵ횽k؅;*4|rϽ%t&&a:oYW=9YM<b> 7G12ʾȧdA$3Md|_#22Vs$)4/HGCUyVL[1me9tix ֩[[vm?Y4z?m `Q?#㬅tIi I+UVJjO%y̢<&ʧ0I'sǢ`t(;Ҳ/0vthz-Xled'K9,WcKӈgNUZҷMr1溾;̖kӋyʼI4yS /V>_%Documento Word.Document.806Documento di Microsoft WordC'Documento Word.Document.806Documento di Microsoft Word_.Documento Word.Document.806Documento di Microsoft Worda0Documento Word.Document.806Documento di Microsoft WordD/ 0|DTimes New Roman(0(:A 0 DTimesNew Roman(0(:A 0   DWingdingsRoman(0(:A 0 0DNew YorkRoman(0(:A 0 @DCourier Newman(0(:A 0 1@ .  @n?" dd@  @@``_>*whoosh.wav.WAV 10103RIFFWAVEfmt ++data~~~~~~~~~~~~~~~~~~~~~~~~~~~|||~~~~~zvtvxz|~zvrnlrv||vtrpptz~|xvtv|~~zxvvvz|~xrlhntzzvrrpprrx~|j[QU_|bICCYn[ICY~zlnh]_r|]SUSSjz|x__l~v_]drnUb|nfd_]d]5=rrnj]jz~lMldrx[[_f|YQfWK_xh[zx[CIjzxxdSQz|_fI9WӹM;QnvK;OUx~xj]]YS~ɵlM?plM;CGpٵ[)Kh|% %;xtKQS]ɖbGr|lSnvz~nfS[nëx;Az=+AYݻ|=/1r_ ?|潄W5/Czãf)/pvbMQr|O=OtjdhjlG?G_ɊK3לdQCMppW;1SŷAMz/#?bx͖SAM[hvhYp~~zrvt[]ptWOUtxxd]v~vvxzd_xzh_nrSQltbdp~_lrQ_l][tf]W]~hWfp|fWhnhbU[hzlSCWbYbnxpdhjvjM9Ot]GQ[dpp~hhhdpx~xh]Yntnrp]dlvjQMb|vdjpzxzztljr||_[r~~jb_j|z|xpp~~v]Wh||zx|x|zzndhpxr]Yfntzjl|z||~vppnrzphrxz|~|xtrjjtv~~vz|z||xrrv~xrprtz|||vzxvx|xtx~~~~~~~zxxxx|zxz~~~rrz~|xz~~|vtx|zxz|~~~||zx|||~~zz|zz~~~~|~~||~~||zz|~||z~~~~zxzz|~~~~|~~~|~||~~~~~~~~~~~~~|||~~~~~~~~~~~~~||~~||~||~~~~|||~~~~||||~~~~~~||||~~~~~~~~~~~|~~~~|zz~~~~~~~||||~~||~~~~~|||~~~~~|||~|~|~~~~|z|~~~~~~~|||~~~~~~~~||~~~~~~~~ ,$   )      j      O2$e鐊lH<2$>J-.0 |2$nB`]fcە 2$z&#k6QB, 0AA@g4KdKd@:A 0ppp@  <4BdBdl # 0N xʚ;2Nʚ;<4!d!dlT# 0X<4ddddlT# 0Xr0___PPT10 pp2___PPT9/ 0? %DExtending Temporal Databases to Deal with Telic/Atelic Medical Data 0EC,-,) Introduction 0 ,-The problem: an example 0,-!The problem: an example 0,-"The problem: an example 0,-$The problem: an example 0,-&#The problem: a general perspective 0$",- 9The problem: a general perspective Telic vs atelic facts,:$,#(Need for a general (not ad-hoc) solution))QNeed for a general (not ad-hoc) solution A further problem: aktionsart coercions&R(*$<  -4Our solution: Point-based + Interval-based Semantics&54//Our solution: Data model: telic + atelic tables&0/,1"Our solution: Three-sorted algebra&#"2Our solution: Query language &3Our solution: Query language & ` ̙33` ` ff3333f` 333MMM` f` f` 3>?" dd@,|?" dd@   " @ ` n?" dd@   @@``PR    @ ` ` p>> $(    6pX P X T Click to edit Master title style! !  0X  X RClick to edit Master text styles Second level Third level Fourth level Fifth level!     S  0X `` X X*  0\X `  X Z*  0X `  X Z*H  0޽h ? ̙33 *Struttura predefinita      Y (  l  C p\Pp0  \   0 s\0  jPaolo Terenziani1, Richard T. Snodgrass2, Alessio Bottrighi1, Mauro Torchio3, Gianpaolo Molino3 1 DI, Univ. Piemonte Orientale  A. Avogadro , Alessandria, Italy 2 Department of Computer Science, University of Arizona, Tucson, AZ, USA 3 Lab. Informatica Clinica, Az. Ospedaliera S. G. Battista, Torino, Italy(6#+#+#+#+#+#+?#+#+H#+I#$!  =D  0Ԉ\0z,$D 0 U- The problem: an example  2  0ԍ\Pq ,$D 0 W%- The problem: a general perspective& 2&  0\ Ph ,$D 0 ]+- Need for a general (not ad-hoc) solution, 2,  0ĕ\x P_ ,$D 0 j8- The solution (sketch) (see AIME and IEEE TKDE papers)9 29   0(\p PW ,$D 0 @- Conclusions 2H  0޽h ? ̙33   ^V P(  Px P c $Pp0    P 0P,$D 0 k9- Temporal information plays a basic role in Medical data: 2: P 0l% ,$D 0 f4- Need for suitable data models and query languages5 25 P 0p) ,$D 0 zH- Many approaches (mostly extensions/modifications of relational model)I 2IY  P 0l\J,$D 0 [- Lack of specific supports makes the task of managing medical temporal data quite complex &\ 2Z# Z   P 0.  ,$D 0 "- All approaches share the same limitation: the underlying semantics is point-based, so that telic (medical) data connot be properly dealt withB 2I  .,^H P 0޽h ? ̙33___PPT10+kDO' = @B D ' = @BA?%,( < +O%,( < +DA' =%(D' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<* P%(+8+0+ P +.  iTj(  Tx T c $@6  @    T 07`,$D 0 0HJohn had two i.v. infusions of the drug Y, one starting at 10:00 and ending at 10:50, and the other from 10:51 to 11:30 (all extremes included) ; John had an i.v. of drug Z from 17:05 to 17:34, Mary had two i.v. infusions of Z, one from 10:40 to 10:55 and the other from 10:56 to 11:34, Ann had an i.v. from 10:53 to 11:32. I 2(""f"""6""c"  4 hT <A 7??  8 7$D 0: iT 0E ,$D 0 zPoint-based semantics 10:00 <John, Y> 10:01 <John, Y> & &  2(""""#""""#"=H T 0޽h ? ̙33  ___PPT10 +dDH ' = @B D ' = @BA?%,( < +O%,( < +DA' =%(D' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*T%(Dn' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*hT%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*hTD' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*hTD{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*iT%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*iTD' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*iT+p+0+T ++0+iT +b   \(  \x \ c $`  @    \ 0,b`0 ,$D 0 xNOTICE (1): All approaches in the literature adopt point- based semantics, even if they adopt different representations2y 2^" "h \ <A ;??^V 8 ;$D 0 \ 0m Q HPoint-based semantics 10:00 <John, Y> 10:01 <John, Y> & & 10:50 <John, Y>,<Mary,Z> 10:51 <John, Y>,<Mary,Z>( 2^""""#""""#"##s \ 0{pPW,$D 0 r e.g., TSQL2 $ 2 " H \ 0޽h ? ̙33  |t` (  `x ` c $T  @    ` 0P0@  JPoint-based semantics 10:00 <John, Y> 10:01 <John, Y> & & 10:50 <John, Y>,<Mary,Z> 10:51 <John, Y>,<Mary,Z>* 2^""""#""""#"##sI ` 0@ H ,$D 0 OAnswers must be based on the semantics of data (and not on the representation!),P 2 *OQ ` s *` ,$D 0 ]Some pieces of information cannot be captured in any approach based on point based semantics!,^ 21]H ` 0޽h ? ̙33  ___PPT10 +guD ' = @B D ' = @BA?%,( < +O%,( < +D{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*`%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*`D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*`D{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*`%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*`D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*`+p+0+` ++0+` +  dL(  dx d c $  @   B d 0Lpp ,$D 0 UPWARD INHERITANCE (Q1) Who had one i.v. of Y lasting more than 1 hour? Answer: {<John {10:00, & ., 11:30}>} x 26(2' 2"0"#%"45 %  d 0 p@,$D 0 :COUNTABILITY (Q3) How many i.v. did John have? Answer: 2 x 2#(2 2 ""# "4 "    d <A =??`8 =$D 0H d 0޽h ? ̙33  ___PPT10 +' D ' = @B D ' = @BA?%,( < +O%,( < +D{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*d%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*dD' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*dD{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*d%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*dD' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*d+p+0+d ++0+d +?  h(  hx h c $̹P @    h <A >??`6 8 >$D 0$ h 0`0V vNot only a problem in case of  consecutive time intervals!< 2<; h 0ҹ   ,PROJECTION e.g., Select Drug, VT from PHLEBO@-  , h 0عP V +GRANULARITY CHANGES e.g., Scale up to hours,+H h 0޽h ? ̙33o!  & <( A`1 <l < C  `  X  < 0tP ,$D 0 vAristotle: Telic facts (countable, no upward inheritance, & & ) (e.g., i.v. infusion) Atelic facts (not-countable, upward inheritance, & ..) (e.g.,  patient X having a temperature > 38 ) &0#, E_ < 0 PP ,$D 0 ^,Cognitive Science (e.g., [Bloom et al., 80])- 2-  < 0u Po ,$D 0 f6& and, more recently, in AI:  < 0 z P ,$D 0 *Linguistics (e.g., [Bennet & Partee, 78]) + 2):D  < 0PZ,$D 0 ^NOTICE: Classical TDB approaches (and point-based semantics) perfectly cope with atelic facts!__QH < 0޽h ? ̙33___PPT10+i~QD' = @B DP' = @BA?%,( < +O%,( < +D{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*<%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*<D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*<D{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<* <%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<* <D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<* <D{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*<%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*<D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*<D{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<* <%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<* <D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<* <D{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<* <%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<* <D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<* <++0+< ++0+< ++0+ < ++0+ < ++0+ < +     @  ( s @l @ C  `    @ 0I ,$D 0 .Analogous to the question:  why not just adding an additional attribute to relational tables to deal with validity times? { 2z%l ` 0 @` 0,$D 0  @ 0t`  ,$D 0 & about 15 years of DBT reasearch responding to the second question! Basically:,P 2<  /<  @ 0  ,$D 0 T- time is a special status, and deeply impacts the semantics of the other attributesU 2T h  @ 0 p ,$D 0 ^- thus, it needs a specialised treatment (e.g, definition of the temporal algebraic operators)_ 2^ A I  @ 0850,$D 0 Y- ad-hoc solutions are: difficult, likely to be erroneous, not economical, not compatible&Z 2W  @ 0@,$D 0 He.g.,  Why not just adding an additional (surrogate) attribute to keep all occurrences of telic tables separate? r 2r(YH @ 0޽h ? ̙33___PPT10+,_D|' = @B D7' = @BA?%,( < +O%,( < +Dn' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*@%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*@D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*@+j     D (  Dl D C Hp    D 0,J``,$D 0 4dE.g., progressive forms coerce telic statements into atelic ones  John had an i.v. infusions starting at 10:00 and ending at 10:50  John was having an i.v. infusions at 10:30 C""8" "   "  " ,x D 0V` ,$D 0 t8What is the impact on TDB s?  2H D s *[p``v,$D 0 ZIn short: general problems need to be solved once-and-forall in a general (not ad-hoc) way[ 2[(6l `A@9  DA`@9,$D 0N D 0a`  ,$D 0 xEx.1  Who was having an i.v. while John was having an i.v.? = 2<D D 0Xf`? @9,$D 0 nEx.2  Who had a (complete) i.v. while having an i.v. ?8 27  D <A C??`A 8 C$D 0H D 0޽h ? ̙33  ___PPT10 +fDH ' = @B D ' = @BA?%,( < +O%,( < +DA' =%(D' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*D%(Dn' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<* D%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<* DD' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<* DD{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*D%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*DD' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*D+p+0+D ++0+D +  vnpl(  lx l c $up   0 l 0w,$D 0 >Interval-based semantics for telic facts (e.g., i.v. infusion) ?) l s *|P  OCoercion functions to switch from a interval to point semantics, and viceversa$B 2 PF   l 0h@. [10:00  10:50] <John, Y> [10:40  10:55] <Mary, Z> [10:51  11:30] <John, Y> & &  2 """" #""""#"#1  l 0pj ,$D 0 ?Point-based semantics for atelic facts (e.g., temperature > 38) @'  l 0   Fp10:00 <John> 10:01 <John> 10:02 <John>, <Mary> & &  2*""#"""#"#H l 0޽h ? ̙33E  ` p(  px p c $,p   fl    p ,$D 06 p 0,$D 0 2Telic tables for telic facts (e.g., i.v. infusion) 3$  p <A _??@> 8 _$D 0kl    p ,$D 0; p 0  ,$D 0 7Atelic tables for atelic facts (e.g., temperature > 38) 8$    p <A a??p 8 a$D 0  p 00*,$D 0 _#Also non-temporal (snapshot) tables $#H p 0޽h ? ̙33___PPT10+͝{Du' = @B D0' = @BA?%,( < +O%,( < +Dn' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<* p%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<* pD' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<* pDn' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<* p%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<* pD' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<* pD{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<* p%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<* pD' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<* p+8+0+ p +n  P t(  tx t c $Ůp    t 0HǮ,$D 0 oTelic algebraic operators  t 0̮,$D 0 pAtelic algebraic operators  t 00Ѯ0*,$D 0 ]!Non-temporal (snapshot) operators "! t 0֮ ,$D 0 NCoercion functions   t 0xۮ@  ,$D 0 hn[Terenziani & Snodgrass, 04] IEEE Transactions on Knowledge and Data Engineering, 16(4), 540-551, April 2004. @o3##     H t 0޽h ? ̙33    @ x(  xx x c $p    x 0 ,$D 0 DExtension to TSQL2: AIME 05 paper  #" x s *$P  ,$D 0 Limited extensions to the language are sufficient ( substantial extensions in the semantics) $_^ x 6@ ,$D 0 jTELIC SELECT P2.P_CODE FROM T_PHLEBO (ATELIC PERIOD) AS P, T_PHLEBO (PERIOD) AS P2 WHERE P.P_CODE='John' AND P.Drug='Y' AND P CONTAINS P2 2'# #### " #'#####"###### #  #  #  # $"$(#(,#,0#00#00#0 0#00#044d # # $   [5  x 6,$D 0 CEx. Who had one (complete) i.v., while John was having an Y i.v.? <D:"""H x 0޽h ? ̙33{s___PPT10S+!D' = @B DJ' = @BA?%,( < +O%,( < +D{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<* x%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<* xD' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<* xD{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*x%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*xD' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*xD{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*x%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*xD' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*x++0+x ++0+x ++0+ x +Y7  0|w(  | | c $\<$D 0  X G | s *\Z,$D 0 Principled and general solution, and increased expressiveness without much user effort (only limited extensions to the query language)! | 6 \p{,$D 0 jTELIC SELECT P2.P_CODE FROM T_PHLEBO (ATELIC PERIOD) AS P, T_PHLEBO (PERIOD) AS P2 WHERE P.P_CODE='John' AND P.Drug='Y' AND P CONTAINS P2 2'# #### " #'#####"###### #  #  #  # $"$(#(,#,0#00#00#0 0#00#044d # # $   [ | 04\p ,$D 0 XT_PHLEBO 2 l `  |` ,$D 0 | 0,\` ,$D 0 `ATELIC(T_PHLEBO) 2  | 0`\,$D 0 QP 2B |B s *D ,$D 0l  P  | P ,$D 0  | 0\ P ,$D 0 t$P.P_CODE= John , &  2  | 0 \  ,$D 0 TP  2B | s *D   ,$D 0l  @  | @ ,$D 0  | 0 \ @ ,$D  0 XCONTAINS 2  | 08\ ,$D  0 RR1 2t  @  | @ ,$D  0TB | c $DP ` TB | c $D` @ ZB | s *D` ` l p  | p ,$D 0 | 0$L\p ,$D 0 UTELIC 2B | s *D` ` ,$D  0l  `M  | `M ,$D 0  | 0P\@` `M ,$D  0 RP2 2B | s *D ` ,$D 0H | 0޽h ? ̙33!!___PPT10 .+DZ ' = @B D ' = @BA?%,( < +O%,( < +D{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*|%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*|D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*|Dn' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*|%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*|D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*|Dn' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*|%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*|D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*|Dn' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*|%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*|D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*|Dn' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*|%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*|D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*|Dn' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*|%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*|D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*|D{' =%(D#' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*|%(D' =+4 8?dCB0-#ppt_w/2BCB#ppt_xB*Y3>B ppt_x<*|D' =+4 8?\CB#ppt_yBCB#ppt_yB*Y3>B ppt_y<*|+p+0+|\ ++0+|\ +F!x= xwfg7E `xĈ$!IcKX~/jQ[ UQ(hVA64oyݙd۹0ssǝ;w?vI'~i16ba8 h#𓽽rv~TT"y `U H0 `0s 0\HdRph1cHHH0`@L pۄL0`@.@l9?( P PP pDrRJ8.X`@@53N8X^sSqßEic YKYyplݜ~y-QB_<Ixvc&\*^} I/_s4MI3C5KB?$N薑ĉaOAo_nčlI=r$-OIv0iMy7 cukV5:<~[pnz=kkwVTDn=WܶsAeֽ_:7 =%Lj7RK?yrJ|97wV5i DH.& "|~a&wn 'E/WAf!%&r)|NϏ1?NhiX˺ b%X 3,*d"Yk!F V(98~HT a~L1Cs~1kR)x)\H-W5ܔ HP"beX2p Q(LwRJ'rF(%Ȕ-^jpeZ 5= r 9DͶN挲, Z}L%*D o^J`ƉPB)|(Y%J#ؘou 3r>v{]nΜ@kkźu*'9gpC,9TjmZIy|u Zr9t@k9hc(i+JC 69Kxn,P[TN8ͦuKȩ֍D6%PU".&ueCMt>YgU6J̠Ԇ2ަ ZZ qxM0oRƮnq!9h7kR 9ʵ{-\)PZ@F7 ,*  _@UW# P..!Cݪ]t9[T|LZ] ?Gg\l||'8_> ᮈ#۸B]_Ŵl#OHgQi(`v0K~eЉY2kh{՞!{m`ܞ] }Kb36#i+"iH cC=!3%$޻a=x,N";f[n p'N~pWo}1#& g:N`'!$_-n{RʣwD\Adʀ.L,=K]Aa#>ù|KϬ=VM=3zTI$mG\: #-\*'Q=ijC^CϰIM#UlLU< 1BTFƉ#)-$Hho H@S/ѹM"z{+w!OJ* D -Ut0^6$kh` \M%#su%AXDRY Zj:!qT\VAT!(Ҩ5$ IY$A!Y94SoVTBSxLy{%LaP&TjHXK|4tُGҳIRĝX?NYS+7vdeAo|ȫuBc-ZYd@=vrje WD6 תh{(<ީbdvXPy/isVje Js½YF OjVT-~YUdk|p%7ѺT+k4r׿1gV hunTOYT}[&˂eZ:~}5G(UP+{X([7T+p?fLsz/ѧ}/<V>>V[lj̍yf}?7ngpf\ZA Ӗ 6L[ʾ*}m Q|A&DAӄe뚝i6gۇ&ه&ۇ&C\I2<$> |+޳-kYh 4o?͟ p5J|<'ݜ1,qaLg3h>NomdDCNEON?n҇Ɗ뙃S 9[[j98e=k"?ҜuNS(1Ckn,뜰_SyOѷ eS$ /CE?0DsUVA$Oθ 7oAnz0*NÛ< ,_%F |lMlȘ/kah8~_N,8ne=X,ΰ8n=V-,[8n [,ۃ8nC?m*VT,[a8n [,[ݰ8n ",58n6*,[߸q ǭX^aqܶq$Xbqܮq-Xaq q 0-fXbq‹qK!yXaq6ͧsǭcXbqq++-Xbqܶq0m| q-ǭXmbqܒq:X)bq܎q[/ǭXQcq/e=-5zmx#ΔlV1]e<{;zsVjZ\O)vfdd5f:Z-NcrFFr:Jˉz|9ȗ"#+j),qڌIs TZV0;C,$ ޒj-#`9 ƫbr^ 0ҿm2˰/#qf98Au &Mt&rZx 9.IC,o13o~8 ]#3j;`R~RF?WE?ȗtxb6s<a&+'kM5I((c>&.B.p+Guc Erz}E0x gaVQpn!'FK|)J.hk"pŗJ#eie۝g5NzlDv6鈹rε|w c&\3%b4bV $ ]oAAove|>)͓rkZ0r&ꐾ̋Ma%%0@(PGQ%H_ŭ= [r)S"藳,Dw_#[K-J7dcH?E 4 бՒ\цUW$":]FHN 6ү̭_+Sl呾VFK"OmPO .+کjvz/ Q⁁SqQ xGYbF8~3~G'JU(/,F}׶zt3"7pW3<5֊xEJ+~*C*\pZ\(s7V5\sq5'G)ϖ(HEzSP_7tj-[3oo=fߒ\^G& "m/{T6ҥ5Zg9 ̟zQ z(?~D PkmYLwE; .h6 i4fdewt923'f؍#8?wK|4+Ռђ#ϋym5$u`'}g#\وhٷ~`y>O;:u|J̏yy~O;yV%,h6}; [[LJn+zu[q|z+ԫCnE8z[x 3`0/fprWG 3E9l,˼(;#k<!F88j4F|Ek"Oedj~+5+ Z,Yyz- K;9WN>|S`Mgڐ^9C~XXS2OcmSMu(S~g*.) =&6I!Up;k<=y48#Mrx9[ܤۛlR}yns.CgjzB|!&~]XnfL1;O`~-Z|8_WOM#.]RO,#"pcE9"bF~|-`nop.`6|p'G 8:?z?-YmV28zRRHȥrAm%GQ+"*zr#V2s-?VҁCK:)ۡ.}HA]|ܔb~!s 8tob WPŀTHDn@Ga:ǂEt36e$|/4[3I$#b\~0ǁ_v8`a/:gN:b!\T}e*9&Qe"^Nn*WH n\9}|1@60|~uI}E~q^$0`GU/}{A-L,y޶Nhk ԇЄvFg&xyoFLwp=n gOAS"{uU$h.&tϿ-Y6+wQ[8q1L`K ~+K_DEIĽIH 79y'>S_qZJ8w==//)#u8YU갫l$x"b;Ύ)i0P9H{V'|~P+&I<#7B#HF2d$#HF2BM思df_ҟT3^}랴qq}Z g=,k1[~0D“DnCa"?";%3g8J_V\VZ7"QRVGv-E>؈rcdW*\w[a`$#HF2d$#HF2ҏ(?lWx] |չ?3;EbBxB@e j $$B!rmQq5 ZiXiA**Z[*"lcl6Y"Y?|y#Ï??0HJL9N"%pȧzEgdc|f ((((((TT 4((h X@C ]d4(ZDF4( h P2Xq@&MJ4( h P:TxPLY@2B  <|)"JJnүPLkgE!n"w7^C41*69ܗc׿~Rӫ<@xrQR<ZY2@ Dl|kh,'+>,"zDmv5.]]- :lȞ>XX~–|y}?;ԙW&l#dhh!@}w>ӾxΖ_lmٛi_pM8YIN#_Oŭlw |=/yKs^93~?~7zw?l%ٱ}x]`{1|RS\;s+dEIr s3'-gC3cM/xpszs}ri޵u}}Ã'^/ύ{"V?|5_ŷ߽d틇>7lBB zkilֲ&rf/=W ^yOWg~Ãn޽=d(͜EoP~#6 zhG7lG څYIPMFUI$>e; @ 9>;aB3P ,@刈aVz; A{!jH0\D@PŌDRLU@R-wBOSd -x}SGC4෌ Ҿ @D)3FL4kDC!5@¹dC(*(DAYAB EٹQDAʃV&Q$ )RF69r"Z b I i;#T%s:ђYg8fā-1ډ4F4Oi E Y$ju\mu +-33N;8ƞAZWG5@k3]BKSF2 PpU3H`*4ïeYUՍ qxQ@% F):(K W*vh"GqFH@ FR0p%oRJ֧JlG9"H9 giy] 6%p=ynpd< I,HǓUpTE1sa P<5Iцx6 ;DV3 |rjgjh gU\ LVJ3Ր*zFyAE۽&B)BN[X6,(Vڌ/@U O#R@ QlPiA(7.Gp7jQQ[ ?;m% mozq%`¬#۹\Jr\ %/$}u3^i0MQG|eb2pEe.uT{m'UG-ڈN:cC=!gQ9/|\agYՃP9u@@wmz!G1 "N}1!=qyO8g}p<%mt'e9P#F /5qjif $GEYLbo^(ܩv6Z~_8D,䉋jv\MmTK2 Rg֎L]+cEjZEn)Ǔ Ge59X4p3g_T̉sV~ KjEn2\-6+xIjuSۙj _|:喑jie'쾣eA~Q-zuDEji/ڗ0Q:&ˆpb R:bL 3[8i 4ZwWK{v*{bG+acje%_?BTK@[ݫp?;3S5(rnmjr#\V5//GaVe05 l[Q-m̖ U'T-G{lK3jrݶlx롂 Z9O-x:aQ_ ?ZFŏש Ze-߲R-&WR/]Cqctlf)kTe&''աuGeJ\-i@MW6kVr]֞ ݢږ9zV[+U۬񿞷Z, +kѠ'[\+sC(^{Ҳcަ_PjXM'^_zZ:gjudǭ;{_ Ci0 m_ʅoLK9+#`̥ dޞrqĕ-E#[@ oe!;Y܀^;?,.gSč7J& +3L?0V4!y &LP k/NwzvTR.k sMPX]bZ%xLux CS}Lu|Rd8>\ÕLU@T!VXXaQL 3%1Y`v)#`v)+*@PP=T1UO(.nWb"nWқ C< ۢȶhlVLU'VMX7kp@oMqt@M^T Xm ¶n@֭t[9l˽۷,}xem4!zg0Mه&\C?Є>|+YD햵ZytY4_Q5 .jJ&gzwq~ w;hrA{S=K{72c3mrHiM^4VDm3b_gQ>4G]~~ 8V5.׸~^UTSJSaIǦJ/(/z'w"{UNkθ 7mAnFO9Tit-Xt-y=+`  }, ]80< \ʛ+>aF*-`y#/hYIKe,BƻFdt[Ut: ȚseԻf d2#J+3|w IIt-nl#ɷ}3ݽ0zm502LFcpv$w݀O=ve$E}Yҙ|j8,'c8U(~"Ba 鬥 c6N7U(ob٥f h**lZmLI&(a˖!6 ņJ Pu9[XT[v0xw}͟n^ޕ'/`?k$O<%HE-tڧ | fZ.Wט3V.1+5sK7G2.%=%e MMHB.u۸qR*n6eT8?9}Ċfs~UbBJDQcv]5X"IuGvM`b TfL/gB3gvƥG?Tҁ@q>.|Vߘm>]t @bɽh ޿nBڑ\|;qa$s1l&Y # R^Ds-%ٙ"cG1`!`WvH8ԉ&H9:7B] eod^r:Ȱ2}/#gq;f">>!]5cmOb~_1]טF]c Pi"{ad!b.kkrgxO{gtn|8QHܹW9J:KW w^a|lCiwVޘuAG pfRO!hW'8I>Om1]a W%II Ik- >DD r>[)ɡyd2 S }6po3/ :ޤq]C"~p*GH 8sȉw8)Jx; Cy~"Λq}8ByW:G*-,Ι5V?Ƃ䢜‚,[aqN'\Z/BD@+X8®%WJZ v%=AzЃ=AzЃOh F!x= xwfg7E `xĈ$!IcKX~/jQ[ UQ(hVA64oyݙd۹0ssǝ;w?vI'~i16ba8 h#𓽽rv~TT"y `U H0 `0s 0\HdRph1cHHH0`@L pۄL0`@.@l9?( P PP pDrRJ8.X`@@53N8X^sSqßEic YKYypl?M_?/9&ơ^!mQxrztHg07XZ~G6~ao9l;G1Eos5Miqv>G>|lR5y'v_7WxCW~ѣ5QQ͓K,o^皗FNNjMm 3 Msr/S|Cgu;kgM{]]^x—?_|/wyߨeϒ=\}W>7S __z/ [;|usE=k`o-_vaj#БC[?tr-_8uWPמ5;E+*"r+n[y|۠^/}5|ߛ?}z0b~;7ąF𓢗ī B`i>']И'xfU4e]]@ m1jRSɒtUERb2,yJ#MF}+QXE*q0HyF`&\a􁘎95 @c~.xjB PnJhIRɇTUd1TJ,RU8(`fջ )%B9̋dJy/BHPΞC9Ef[HLk'sFYÁP|h>NYkt"D/y0DJT(Ml>j}l̷:ڄUV9G;=g.x gNLuIb:qm38!jBk_6礼t>X]-9: hZ4±I PF_ءLˏ%cR<7(ECW-iD yIfӺPRy}FC_ x*c LP:!&:*JSw ZDFAfPjH@oGDrp-8&v7)cWEA]78iU\5Y TZTZK (R - ZElVڌ/y@۪đ\PBQCRunU.-q>OZMߟ#J3.y>| /sڅpWđm\./Gb}Lx6Hʑ'$}3ߨ4FSQ hv0;?܋%SDGw,h5j=yܶs0nO.%y}HH[4݄1ǡL0Kwx'w^3@ l`'+~CG_D'0?Nȓίp=X)ѻh" We@z&S %^ \Z^NF݌%|FgH@¦ @Mm=q*$#@B.  \!W!gX`&wA*6*!vU*A#Nhpih$7Q@FX ѩ&y\'%*:qN/T540a[摹к̀ n Z]Mz@c5a*.F*viu$,I J\\ ̀7+t*)MIcv:#su$)RNom;7?>rպD!NszpCzWn MB;jd`ʅ+"kN=WVwC1Z|;}LN<9[ԎyzS%9ޏƬq '5{*h*25 >Лh]GST:dCcZ%yAuZ=i;dYv3yBv݀'չjeޟ2ngգNߏ'6ZSOײIQ>ֿ?l߶Xߧe鷻~u18齇sh>1rj~uTMt.mU:.mSo?^tZ/3R+gN&KEݘrsלce}9N^V\M{YS_融;-ykQ {_WݳTj~ӊc7'άe>krz}}SeAɲF-~osGྚVVΪmo=,OF`p4QզL^nuj}οfç֫o=\j41 φ+-' βeˋ\@ T9O#$'qM AS@o0o;~4LDg|S,5OS"HϜd262S2 3YX8IRQ B*>y ߱;Jnm5/EkKIA2>bFw| %kֈe dCBBUTݰ$jfjUTYd W3CE1T̨h^4)F!>a 8C85!)pjC8S pZaj8oFy{t )?S~-#dֶ-}wö : ᆆf c#-cZg8ڋ{;E=; .gT̑~>޼G%k`!| M50 ' Ҥ J(W2UEDU!lVT$xFUv J4%c!BXԕ@XTI v&(3LP:9ɘ D ٞ6I?8O&)$ dM&@z  % :H[)%e@-},+( -'–Je==SCRo a8y}39]EWI;Gy+EyDyy+k65f̼_37|83.ϠJJu%Ħ^7~#Gꆽ8iKKJi}ZM[K-}\e_F >OMiB2u4CDCLCThI.t$}hc>YD햵Zy h47͟@Sk%}>nΌGwǸ0&r3h4A}FL62!'lCcEj)-}H5T5 iκ|gi)Z!5^U7uNN)[E{~2)BX φ"ܟtA"g๪  'g\ 7=gKB|SoyM^/gys6ͦ?6od΂504]p 'mX2bqܞqk,mgXbqq-X`qq-AX6q+*ǭXbqzq-ǭnXaq~q{XWaqzq-|oW Q,[8n[mvA,p8nWvJ,[8n3,d8n⸥<,8nS߹k1,[8n⸕Q, 8n[E6k>?O,68nIMvM,8n⸭VB,ۨ8n?2~eNܚfx 6A<gJ6+N.2m½\x9]5U.;32WSk@KEUΖB19##Qlq9[F=qo{5Z K8]@GmƤ\9l_*-+ם^NCWGoAWiđI0uJcULKF/Q6eؗN_8PG3F:DH&tegb-s QQ$ފ!̂7 ?[G.ӑH5}0)p?):<19z{ڎЦMQ{E1ir !#:1Ȇ"Ky9J>LϢDlja% k8~nxl%R2YyX2γx'I6F";\t\9Zˋ;1Rqw1e1+hۄ. W^2d>I9^#h+3o*g>d&Y_" 23:Q{婣XK:[{@DRD/gYOGZJnߟƐL7hc% |MIDt88z9rm_[KVV|#}L;oE۠˟A\VS!1^Ē@q~g 'N/;P_=AYp''m8g$End gyꙃkD)VJU|?2UֵعQnj"{?k#N"%R-Q %iP U4(ofI9h%1Zfzr̾%4MD 8b_D m0ZKkܵr?GK.P˧ Q/ @:0۲jy@y5qL@Àx'!Fj_$W=0*pe(e f ,ȴռOg0-#IPdDS. v g~u?Tx%/l `gۥ+G"G*Otu>O)3dx]ṝ vr4q"x탏<3#R㭗vv2ZF ic"9&T_i=:O?$>?oOr*ު [Mޫۊ*[ͅn"OWj.tV5ޫ\jNzr7w7@{ES6r,ws{f rxv.p2rsCC%xmv7591+2\}+v&q̡].mF152332 iLsdffOKGpaϽ5+hV%?8gGڪXSAw}Tsf#^eyF}{)wX…]m&b,̔ 簱,쌬;|⤫I~ <Wԫ(֔'dk@dC· yN?/3,9䐦^9:V^O5eɂ^fXrkCzH{}caMg|(#{RNzwEL(tGDwFn~TG.ݖXNxѨKw4RQ8Kv1*G#o^wѨKw4RQ8,]byaF.ѨKF}y}{u1+hԭۦ^4֭݊.d /u֫nEn2u_nzdMzc͌ &/ÊELZh)X$Wh54m _DWʀ(M߻m2Gbi)ZP0fɼ}p^K#7oSXr!Mrt[w&ȑ̛),9޵!Mr$ >3HOt&ŦJpV>O)-ҐsԻ4QoMsnoI[/O)F- K8W9YyOĚ2Omoޢ8jCz޳M&kSo'ķiHH|Kj`/Eg$}3d#_ Wze%ݗ97>_'|{{cI| y2$<v'oͶh-| 8b^ED>5epZ刈MHf8z3GGNdm̷Y[,뵳 SHI!!IGвɍZ˷$_XI .l!uUٿDpS)(b=b+>p@Lӽ)\AN,Rb"meRr6G1b  GfJ۔ slrwh^'[:鈅pR;8:PVopTG)΋xe8rUl'N_ #&q8^oT96r%} xC"OUE9701~b{+:=6,RB(;":}9w3ݱ%#wZ#λu9|̺ln5gi]zҒ +鍭Wsfzt.O͊U-ꆓfλƚб>dE܎۬dFmm",0-q+TD\?-&z& )8޼;IL9AZĉ{kUH<+r"|*48Q xodV܎ î&Pփgv;P;;@ }[ȃs9zFB%$xtH d$#HF2d$#HF 5v>~dF VK/S~Zz{҆mJƍQ\Kk5X390l%DK O "g" T̜(ɛ~YqAZiAܒJu*` ReU;`9 JzNe y -d-OJ$f-6gu;O~9-QB_<Ixvc&\*^} I/_s4MI3C5KB?$N薑ĉaOAo_nMoI9r4-O I~(iMy7 cukV5:{mή)-O d/rٿ7^|wW:Q}~/^>U&{^;|ǒ/=ߥt/ [;|yіȝs#F=ok7/@o-_tAjѣБY;|j-;uUPמ-ێE+*"R+6<\mPu/Ǘ΍?zCEO ӾXpҏcs$_~H{͝ooK9< "z19_ 1?B#IKUvYCHI\ 4.h̏Z<3*GDV..nA)dIb:sj*"J1HZV'SɬʵF:H[c6@m*+z枳@[<3'PoZ:$q|rqd~v)qUZbVsR^n:E]`.cv4PZ-$w(#J RBfǒ1@) hE?US<$siR(yrju?σMkqp&<$㒾oT )m4;Œ_Yt"@Eglħ8P7c ߳*7'2zF|[O<"ЃK'|kC$xpebV"p9i{]PG!F]JЈ8q54\AcM?Ht%:%:)Rw RpB@4RE'eJ& bkTB<2ZWэAKt)@h7L%eH.2/ZC$%I24BA KK=fN%;)(yHGWeriI4GcĘx$={$EJ1qGWGR(?©uNOnH I[cZ-LVVpEdP|Zɶc#jz8FKoI5_BV;gk1^V6xʠ?'ژU_=.af5~OKUEfGW{zȳj4Jl}h -~ +sZ#gxٌ=1_&g}hrgRk$/Q+;?n}{,KNm?Oծ:WR&ޥV ztݩ^>!fWkw[Z20*Ⲵ$,6׷Zٯ.&'P'#FN-ۯɒΥMJcT%mm'nQ+t%}:Oje_^|icj{qVS#8.IzB\8| hmC-r[`'773ЏޗpJssiң{J"_$"iLƦBf Jfd& 26?2iB*TH'O^r䶙;}Km3meh riC2V7>HgQ,x?ֈd@ p l}HHRS lcSQM2?j;TTDjfhp2~?* sqOX3!|Nqo!^NC83!)F.}5|Qt^`F5]Gq#ǶD٪mKݰ-ö pCϰ1_ٿ1?g񢞝'z3Ss:H?XssWo^Rh[#֒U0 *Sixq% +|B¢J٪hfb^<#ŪF!bفCv%1T!ueBX ueb_r@rؕv%(DُdLDd{"lOTLUşl?'hD}"I&} = Á2Of>BfAA`)S@a)%2ݞ) [Ocφ0<Ӝ˫$;Gy+Ey@yy+k65f̼_37|83.ϠJJu%Ħ^7~#Gꆽ8iKKJi}FM[K-}\e_F >?MiB2u4CDCLCThI.t$}hc>YD햵Zy h47͟OCӸk%}>nΌGwǸ0&r3h4A}FL62!'lCcEj)-}H5T5 iκ|gig)Z!5^U7uN)[E{~2)BX φ"ܟtA"sUVA$Oθ 7oAnz0*Û< ,%F|lMlȘ/kah8~_N,8ne=X,ΰ8n=V-,[8n [,ۃ8nC?m*VT,[a8n [,[ݰ8n ",58n6*,[߸q ǭX^aqܶq$Xbqܮq-Xaq q 0-fXbq‹qK!yXaq6ͧsǭcXbqq++-Xbqܶq0m|䩿?q-ǭXmbqܒq:X)bq܎q[/ǭXQcq/e=-5zmx#ΔlV1]e<{zsVjZ\O)vfdd5f:Z-NcrFFr:Jˉz|79ė"#3j),qڌIs TZV0;C,$ ޒCj-#`9 Ǧbr^ 0ҿm2˰/#qf98Au &Mt&rZx 9.IC,o13o~8 ]#3j;`R~RF?WE?ȗtxb6s<a&+'kM5I((c>&.B.p+Guc Erz}E0x gaVQpn!'FK|)J.hk"pŗJ#eieۓg=zlMDv6鈹rε|w c&\3%f4bV $ ]oAAove|>)͓rkFWf3TBU} 4LD&efzuģ@wSG }unɥO_β}l/}H+ݤ?!!|6oЀ+@VKrGV)_қppt/!9%38sH2~NGZv-??A͗?ŃhkBc0DbOE%e%#hO(^+!v  zOO._q5H2^ӇֈZ+R9,)}~dp5­ksXD=whAGDJD?[ʣ"KNA+Bi~Q̒rJcTo̼CԾH=za$U(ʴQ@$Yiy/`[Fj'; ˉ 3 ]$D_*Km\ _=1vHW\E6>T^}0XSgg?oo r)ު [Mާۊ)[ͅn"OOj.tV5ާ\jNzr7w@{ES6r,ws{f rGyv.p2rsCC%xmv7591+2\}+v&q̡].mF152332 iLsdffOKGpaϽ5n+hV%?8gGڪXSAw}Tsf#^eyF}{)w<ͳ)g0?)1w<[5gO`S0xnݶVle֭nEoSLJC꽞nz㵯,L>X…]m&b,̔ 簱,쌬;|⤫I~ <Wԫ(֔'dk@dC· yN?/3,9^9:V^O5eɂ^fXrcCzH{}caMg|(#{RNzwEL(t{DFn~tG.ݖXNxѨKw4RQ8Kv1*G#o^wѨKw4RQ8,]byaF.ѨKF}y}{u1+hԭۦ^4֭݊.d /u֫nEn2u_nzdͦzc͌ f/ÊEMZh)X$Wh50m _DWʀ(M߻m6GbiiZP0fɼ}p^K#7osXr!Mrt[w&ȑ̛9,9ޱ!Mr$ >3HOufŦJpV>O)-Ґwiãޚfd9)^XS)[9W9YyOĚ2Omoޢ8fCz޳ͺfkSo~sZj YjqrJH_zO>,~wF!|Fғr_xb%mD*td 4 \PBGҧm4fsW9 2tֈ?K'oU~Alt &7ۢŷ#%y4ޕ-5X2"i>V#"f4!w':H&V8f(X Pp+F;<(.-ō𱧏ѳ]iژoYkgBB. l+9ruZeW ԓ!!o ?H 0\ԁOuC*&SQĴ{V}zS:X,*D ʤplb>:9,X& 敶)#;Agي)0`HO"y$3B9Ҵӑt#D C}aG}>;8ܷtQ "M KӷWqt0R,;ptTnOFMpqJ%_߶s@mK#L/;"yE؟&pf7p^g>a]tǮ㗌eH8maV2벹yd{-ΦusKK+p667k\͙dij]ؐ<-:rE:rSO EP☺&Yl`s9L+v4V5LMPh8-s陔yr7-t79eNR\wSq59g[f״:[ҩ@MMGa\lu-NMżV7h>1q:\M.dSuU5HUjXM.&w353{cBDGc80ba͊V';C]lrjRY->Ӭѓp4<5+WWNV9kB;웒q;7Zɸ v DXa[>Vۈ~["BE". "e.M">@Rpy͉wΓ8r'֪xV7D |Uyi~Iq8*r7T]UM.e#$9E#`wۡŗ e?Hu\7EqD!]A()/9Q77₴҂%y<2k)qt8FKGص${(:T #HF2d$#HF2~D W~x] |չ?3;EbBxB@e j $$B!rmQq5 ZiXiA**Z[*"lcl6Y"Y?|y#Ï??0HJL9N"%pȧzEgdc|f ((((((TT 4((h X@C ]d4(ZDF4( h P2Xq@&MJ4( h P:TxPLY@2B  <|)"JJnүPLkgE!n"w7^C41*69ܗc׿~Rӫ<@xrQR<ZY2@ Dl|kh,'+>,"zDmv5.]]- :lȞ>XX~–|y}?;ԙW&l#dhh!@}w>ӾxΖ_lmٛi_pM8YIN#_Oŭlw |=/yKs^93~?~7zw?l%ٱ}x]`{1|RS\;s+dEIr s3'-gC3cM/xpszs}ri޵u}}Ã'^/ύ{"V?|5_ŷ߽d틇>7lBB zkilֲ&rf/=W ^yOWg~Ãn޽=d(͜EoP~#6 zhG7lG څYIPMFUI$>e; @ 9>;aB3P ,@刈aVz; A{!jH0\D@PŌDRLU@R-wBOSd -x}SGC4෌ Ҿ @D)3FL4kDC!5@¹dC(*(DAYAB EٹQDAʃV&Q$ )RF69r"Z b I i;#T%s:ђYg8fā-1ډ4F4Oi E Y$ju\mu +-33N;8ƞAZWG5@k3]BKSF2 PpU3H`*4ïeYUՍ qxQ@% F):(K W*vh"GqFH@ FR0p%oRJ֧JlG9"H9 giy] 6%p=ynpd< I,HǓUpTE1sa P<5Iцx6 ;DV3 |rjgjh gU\ LVJ3Ր*zFyAE۽&B)BN[X6,(Vڌ/@U O#R@ QlPiA(7.Gp7jQQ[ ?;m% mozq%`¬#۹\Jr\ %/$}u3^i0MQG|eb2pEe.uT{m'UG-ڈN:cC=!gQ9/|\agYՃP9u@@wmz!G1 "N}1!=qyO8g}p<%mt'e9P#F /5qjif $GEYLbo^(ܩv6Z~_8D,䉋jv\MmTK2 Rg֎L]+cEjZEn)Ǔ Ge59X4p3g_T̉sV~ KjEn2\-6+xIjuSۙj _|:喑jie'쾣eA~Q-zuDEji/ڗ0Q:&ˆpb R:bL 3[8i 4ZwWK{v*{bG+acje%_?BTK@[ݫp?;3S5(rnmjr#\V5//GaVe05 l[Q-m̖ U'T-G{lK3jrݶlx롂 Z9O-x:aQ_ ?ZFŏש Ze-߲R-&WR/]Cqctlf)kTe&''աuGeJ\-i@MW6kVr]֞ ݢږ9zV[+U۬񿞷Z, +kѠ'[\+sC(^{Ҳcަ_PjXM'^_zZ:gjudǭ;{_ Ci0 m_ʅoLK9+#`̥ dޞrqĕ-E#[@ oe!;Y܀^;?,.gSč7J& +3L?0V4!y &LP k/NwzvTR.k sMPX]bZ%xLux CS}Lu|Rd8>\ÕLU@T!VXXaQL 3%1Y`v)#`v)+*@PP=T1UO(.nWb"nWқ C< ۢȶhlVLU'VMX7kp@oMqt@M^T Xm ¶n@֭t[9l˽۷,}xem4!zg0Mه&\C?Є>|+YD햵ZytY4_Q5 .jJ&gzwq~ w;hrA{S=K{72c3mrHiM^4VDm3b_gQ>4G]~~ 8V5.׸~^UTSJSaIǦJ/(/z'w"{UNkθ 7mAnFO9Tit-Xt-y=+`  }, ]80< \ʛ+>aF*-`y#/hYIKe,BƻFdt[Ut: ȚseԻf d2#J+3|w IIt-nl#ɷ}3ݽ0zm502LFcpv$w݀O=ve$E}Yҙ|j8,'c8U(~"Ba 鬥 c6N7U(ob٥f h**lZmLI&(a˖!6 ņJ Pu9[XT[v0xw}͟n^ޕ'/`?k$O<%HE-tڧ | fZ.Wט3V.1+5sK7G2.%=%e MMHB.u۸qR*n6eT8?9}Ċfs~UbBJDQcv]5X"IuGvM`b TfL/gB3gvƥG?Tҁ@q>.|Vߘm>]t @bɽh ޿nBڑ\|;qa$s1l&Y # R^Ds-%ٙ"cG1`!`WvH8ԉ&H9:7B] eod^r:Ȱ2}/#gq;f">>!]5cmOb~_1]טF]c Pi"{ad!b.kkrgxO{gtn|8QHܹW9J:KW w^a|lCiwVޘuAG pfRO!hW'8I>Om1]a W%II Ik- >DD r>[)ɡyd2 S }6po3/ :ޤq]C"~p*GH 8sȉw8)Jx; Cy~"Λq}8ByW:G*-,Ι5V?Ƃ䢜‚,[aqN'\Z/BD@+X8®%WJZ v%=AzЃ=AzЃOh x] xս?3;J6/#c $^0 I di`mM[5VPTQrkEVWچFo?nkԶ $?gfLvvs3s^9g3gfϜ<[n!62<&.MDBD9><22$X n!;\@nX PPV&!J 䒑j 薶@?=0\Mp[˜1H7_U__sf( 0eu:ᯉ,ʪcj UtJk#hc̿ZmĖvm:-33d: % 3)zP[w $MXFVAHi ,{4l~bWDQH`ELZvZ\mxcWOvAY4N!v Po(d;tR )T{B $Ph j[V"hH3*lBu@j1) "PK=ơTW  jbSPm?W+$"&.8y`]@Zv9dHi'@AK-Y^,+] dTbiԮ- ~ I {ʸ`ܾ?v# ]ۘGs"nqvDݰrwxǫ}&i*wxgX^=@_ c'rogqV>r.3=Z:?KOWf:ЁuZ쬞pGV,sMտiozߪ5%ϖ}A+ow뗖T+- vqkh՛kK?M߾흩Y)A0wEE=vuW -)PSZ_*ӕR1tIvͮܿO2a+sZ\V^wJѫ[jz7Z24+RRO}^+o~+=ԣćWwc,>tsՑP=?]6t^JڞߠܧkKxHӖ6eNf޲%ڲMߛW=% ܪWmU~wP~ൟ?WŅ'}DnMGq !F̦ϥxؤ X3) .g6) l6}`Hj+,rUխz.%Q]NDuaĠ0^5aEMN1L({bN9$!].C!])46!äy{oh,QLÑM ӌZ_M-ݲt"薙TK- c 71_ٿ5?ّ$&ggGHf*G.Uꕥ迃ׂ7@U!|U P9j +J-P/J*CbK.UU"K GU9QI -*FS *ԧS BIpPɪNɪ7цAƇ@=)ٓ>#61T՛< ϦdtXg M]4&\f@K<`5`ϰg NOin۽gK}e<.fLwr\ԧ/< e}$غnUkfn#޺y_&̸n? y(x`ukzqބjKJj[='QrjEGrlRF&B:V5Ս.Dd ~BEp.9Ѕ5>e,LV9]/AVV%To1V29zq31A[Ϡ%|== 3 _;5]ɈAŨMYv" -R1Enj9<tg]1~ e:Sm\UukIm M1="jSDeSD$^/CO:,'b9\U51=r-- R!DbxÄ5}yXZ\-.֯*џVҬ5_ MH8~"Xp '>qʈL| 8nq>[q҃7|=mbcoǭ8nq>[nqꆏ9|㸽8nq%>ۨq(mo ǭ8nq">&q.6\|+8nq+4>[qb6Y|㸥y8nq۴M߾1|ǭ8nq!>q"6k|m8nIq:>5qܦv\|㸕m8n/3py/pymS"^Ďpęۅq c7 ~z\0hp{ˆzRєS@vwnZIq˛]ZNu }丸|c\0N dst͋ QBUu<3ZH$U`u Lj*%F/ /K0vAT[ѳIVv~ZdT~JO+s\F5AtfMwBr.Yj䝨;!;XM?XO?Η8"Qp:Du= N@w&dnD 6Y3Ap<ʠ(5+[ aamE(?VYlYjt:~A5Bo]|#2!%6פT_@sӼn|6T%eB׌arH{/#qmx~(kWvRW [$>|WGq.hO6#C 藳1ej I7d1)0{kY#YJ?԰MʗѐJAl5T#6keꗭ䯕L2Ү|B xBN3zQy:֩)z}wh<LrQa̪klZXr+D+煼@>л. >IrgD rd(cV2P8C0Pr2IiXY`yk&)ؘzN}[]C]8!@CdQ1`lt*ڋ,]20^zx,2IG)Cpuӎ8c1vt)Q%~E͓QTbp}/ i,o~,)L'o<<L)8툉{i7bmG{|<]QiW,6OIN;bOC;`GUk DoI>jX DQI>JmԲ5z׳Aп'%7(mj/\>lA֨3!pu3;|dG!$=&&I{'$~&q'̤9Q_\999l3aGʂ5rN#u(/Ʌn;7E9v܂9TP6̘B9I l~ՓK,Xɥ/D|3! ϳqqy*vg<*4}yzv&~m~m!4<$=I?QnS?OŞL|x OՕb<\Oar;S^nO2Seh 5z=})_`+󏹢9+;\16J"/xq rH'xrNin,;o]XY⺐د 1TqW_g1?ӯ}bpZv<* vݨ 4)8-T;q#vI16jð3)jx_kXrU0)װ|窲<`BOrЀ bckzs 4;v%`e+<(I>iФO I9rI>)[ΩpL ʓn7 oErA!lPl pf΃ `3mh k `=؀h=QK3YŃMzl@`Ycm pϜ4SN=`3 *yAr56slT6# !ωOwrSߦm/7Q v-t0on{v"T:B뜓Gk¯ߡ*`IE^7ѼM`}7jSo~SxǍFۑ&Mۨ=Ē l֩~U*%3+'TxvihbmGsIj9dm'Tx*o?֚j4ڎvY+6jUke'o3{/w%yVK4̒KʯE%콧^"D04E }װa̓7$J)=֞U^I{bgx9r-c>?s] |B^.ˇ;hmMGq֜FB='⅊y>B0=`kQڥ~c?%`WptnaJ#h?i[ݏgK"ok6t\/E~W "y +7N|عħ5LLV.Y+*r۝,偢Ӊ ,ׄtVuEX?QgɷřNg\*pi+ V t/G}1'N8?L;7zN>)N9ck%>"!IsQTSɧ?uQwx8jX_9]"[e 9~ ä XдL['VDnE$ǯ|}||~+壻.:|d 8`p漈?DcE ^dro<˙t@}'n0 RaĐt?+7%>EyBimG ǃ4'l%?k.ۿ] ?GǛL93Bv 2T##nj(0J489eUUkyk:wԷ}Zuշpa{읟R=/x9\mr"`+X V`+X ; ,旑FÕ2"Õܗ}ub.2s?' [aؿ';H5ˋK/V^QQ]URT^YQS䭬.)"_KQ{DyD1 _K$V(C5-]V V`+X V`+(?ĽPWx] Xי>3w\AB%A4T  p \6MI6ۺM65mibRiv7>M۔''-i}=p/*sx>|=3g9ZқGoIX蘓ظ0A& e~tllL 3.- 8v ((D$%MJ4h&P:U@2f} t5P&,k 4(h>@@ -*z"@@66R&dP P)JU@ʀTTT)-P5P P--@u@ruhЭ@x \ UNs)]ŸƢtC4bUu^i)O{gc(X`?jH'LLQc4_Vm hOvk$KN1#h?W.ʛH.ܙnj8Mz6 I#W.Xb>ޭ<>ݽ}ksoyem=^B*:u%|;׌딹$AJA69|VPx)(*g'˂Wk\CuWN!46K$E%, 5axmG@ڡjŐ`F,yJ BIf%nr[n+v'J@>R0`eav%bɭ3f%d30Y )t3H1r50 hE%K_Uq0Hˌ{JʸS_fXDWFhHxK@[(" JJ!a3("( 2HU z"T\(ɶnRrF*5p4*&ĮWGKm#fX倠"Z3:ֈcGoi~I^i)Er 9dZm*w8:]ҒkU =@>wR JKpva+"Jw\k6H ݰ~eyzC,ʪ}r L rt-5:bM{.UmaeCRHq]4Zm=ʹk L bކVZqО@Ö&XvC b:MדpL1KJdC J),XOSk &h!9gnu fn>HmᴀzGP3&JH3 QUK@z^Z_`պ`D2fT|V@ YĥĞ*쭀+C­0~ j պ~&Ťe6nJ+QP.ǀ )t@#kJWAo2 wýX&+',z;5s+NgȞo6A Vvcwf3p"7-$L#;Pz }D҉B@'XЖWn]*ѻRv49 UF(mw*Dɿ õ)1Oc@đC#%}vt_MԹf,!OPw' GvT%ωy-M*GЊ;"SwPLBIun(xn. }g{dkzuy Gߺyͦ'${ ZqӗNKe#jY);s)z6i=d$FXcffwÏm-̊w+s{K^\JьEs܋F2Jsj{X8{?z[U2vH+_蘧py=heK9GVV\,ZVk}{sY#iŽ@mj>D.|.@OWT.q/ZYu]nZ^ODo-#:V}~sZuY$.KӷU_֊[pہ?ӊh5+o|GѪa˫[rX+߼>~Ն<߽T*'Z6V O[TVQ?ӕ7~Z,Ioy菚2a)Z2shoNdV\ϴ~Z׌ܦ׆g=wiߦqM6hюOߧU5M]z>Q$|tV\UvUV1nїV\{tsUΥit;=~VyOGho{Z؄Bi;]m xe;N/ |*vD8#& ]~%Y$Xfbψ6%/dr0r3QjvIJ[o aȥmL4y S$L<8`rC*vPP..5i w pGM\\.}A&L2>a`?;:MlR\}V,YD:"JQ].pSNDuaĠ0^ŠFĈB9SC^9Qi*4K (tQQJ8[Jv`c麽Šb|`/-kn[e%ЭhnPM 7%"Kx y\~ߜ`rrd2H-ukgAmoj*jWQU_U-Uk+(igkJy*MbCUU"WC KUc.9Rg@KTT%TU \pST8pSDٟBd``اt}*]MƇ@'AߓBߓd)D%C8SfC0*pxTE8< GIOin}xXFlx\V1͘r^%O7&ԷXoB}f5W|B+7)>gX!_He%¬~3#G]F9j[Jj}QU[OmrjEGJl>YSb!kJlVgYnv 11Ѕ~BEp.dt kD?>e,LV9]CNy6A z{4f9>w8k<94qźbnj׎Gt "NNJ@]'eCQ`@c%۷6|ͤړWLwz;IySvOh;Ab$_]hv&"Q7V.H /Abpv\4M=ZQH$K`t`  Cw$p9crG`Ygꗩ_xNTc8sN֑n~RcP~RO ʇk)bE*YE}čA>I~^3(]!jDn&ՓMlZzM^Jz9٘gSiAQGvhÊBZ)VQҭ ~e`,35z5+SM?.N?eymrz:6z;^Yeq|e#5 ZQll.J}d\ R3guYp-8N 3){OVR W[&?>| ]rǾ:xesjܥ~9 ݲV廯lj_k0 Ld5#YkV~pb/.0co-d+LdXj^6V>ken~ʧjr^taػTtz3%[603>ٶ2('މY[ qHx$lv-E1~oCgcH6WPj(=B=X˅NRػ%$ n۫={uޮnr{NOx~t! ~Tm΂t@"6NOOoWE0z9>WB7&$p(n.(1?Ƭ ٴ/$"ǵ7ki*<&Q 탾mSOks3'[' \:7i/R! zEZIU=s7cosU1S] "]yeخ&#"d;Q11f,t!YDG.U|x"2#'l\DK ;8%Ƞ<FS'FZtBLL`e6ZZ O ;E]dȉFqZmHdr_6"ejI+8D|qҰFTE\{I>iXN"D.AFڷ-~0>. +3W8!Df5fNg]-N=sjO\p`uM/|,r)s/.(3U6᯿e ')H/ҧ76y$1%Io W&!#zk8e*Z⍢Lv yPӒ3fT4E@^2Ueh =5<^u<狑'kѾ};_`/Z={ZZUr'kxh 5JK(_X0/ټ1;=nljd1_ T /GA//1DL8(cclT0RfoeJ'߰\r5m]1Ws(d4ڷjmR3 YznX-[lX_ͥ)>?Se[6/xquYpbl?Wr\͓~C2,C|Fg ۽!E#h  Gi ۽!'بnqõΰaVK4.LL ԩǥ/bOG4Ye5jO4e6Z&TTvaQcȉFqZ kєhR)S җ`{9GDAblb"UVWD p> ?l Ŀ=qÎo'V?2:(sg!5F(/GY~UoT$='{L#N iY9ݣu1_k/:E~t"y?vƱ' v;>nڰqSnhn\ |9nhK'e/-ju.<^;#{89~5E"YUEq wiEsܳ}>gy5 s wFA*2oךO̿otv l!lo2a7a~ )IPuw%{ |jlghXoI̐Qxo6{;O{_{sw;އ n\joOWs'ˇe{i.tT חqWu@?Y;^Lg:әt3Lg:әt:k/'{"z~%KeMvWrùW%~k2_\^ o'l~abr#q#%~a?Eؾ $g%a򊕥UWVn(sUKQx'QP=&{IDV ewt3Lg:әt3Lwrx0  % 0-0;@ OaOVW4{hyѽ-p8m3EOh+'0 hp    , 8DLBIs Point-Based Semantics Always Adequate for Temporal Databases?aPaolo TerenzianimanHuntere48tMicrosoft PowerPointics@ R@i@gÿ@886GJg  f  -- @ !--'@Times New Roman-. E2 8h)Extending Temporal Databases to Deal with   "      ."System-@Times New Roman-. 2 iTelicd .-@Times New Roman-.  2 i]/ .-@Times New Roman-. 2 ihAtelic  .-@Times New Roman-. 2 i Medical Data&   .-@Times-. 2 Paolo Terenziani     .-@Times-.  2 b1 .-@Times-.  2 k, .-@Times-. 2 wRichardo  .-@Times-. 2  T. Snodgrass  .-@Times-.  2 P2 .-@Times-. $2 Y, Alessio Bottrighi    .-@Times-.  2 1 .-@Times-.  2 , .-@Times-. 2 4 Mauro Torchio     .-@Times-.  2 3 .-@Times-. "2 , Gianpaolo Molino    .-@Times-.  2 3 .-@Times-.  2 1 .-@Times-.  2 DI, .-@Times-.  2 Univ  .-@Times-. '2 . Piemonte Orientale       .-@Times-.  2  .-@Times-.  2 A. .-@Times-. 2 Avogadro  .-@Times-.  2 l .-@Times-. 2 w, Alessandria,   .-@Times-. 2 Italyd  .-@Times-.  2 h2 .-@Times-.  2 wD.-@Times-. 2  epartment  .-@Times-. `2 ;of Computer Science, University of Arizona, Tucson, AZ, USA              .-@Times-.  2 3 .-@Times-. f2 #?Lab. Informatica Clinica, Az. Ospedaliera S. G. Battista, Torin               .-@Times-.  2 # o, .-@Times-. 2 #"Italyd  .-@Times New Roman-.  2 mU- .-@Times New Roman-. *2 meThe problem: an example        .-@Times New Roman-.  2 U-.-@Times New Roman-. :2 j"The problem: a general perspective         .-@Times New Roman-.  2 U-.-@Times New Roman-. .2 iNeed for a general (not ad       .-@Times New Roman-.  2 p-.-@Times New Roman-. 2 x hoc) solution    .-@Times New Roman-.  2 U-.-@Times New Roman-. W2 j5The solution (sketch) (see AIME and IEEE TKDE papers)          .-@Times New Roman-.  2 U-.-@Times New Roman-. 2 i Conclusions   .-՜.+,0    ( COn-screen ShowTOSHIBA OEM/UNI.PIEMONTE ORIE -{ Times New RomanTimes Wingdings New York Courier NewStruttura predefinitaDocumento di Microsoft WordEExtending Temporal Databases to Deal with Telic/Atelic Medical Data Introduction The problem: an example The problem: an example The problem: an example The problem: an example $The problem: a general perspective :The problem: a general perspective Telic vs atelic facts)Need for a general (not ad-hoc) solutionRNeed for a general (not ad-hoc) solution A further problem: aktionsart coercions5Our solution: Point-based + Interval-based Semantics0Our solution: Data model: telic + atelic tables#Our solution: Three-sorted algebraOur solution: Query language Our solution: Query language  Fonts UsedDesign TemplateEmbedded OLE Servers Slide Titles_gHunterHunter  !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~      !"#$%&'(*+,-./02345678=Root EntrydO)Pictures Current User1SummaryInformation( PowerPoint Document(DocumentSummaryInformation8)