Xyleme Query Architecture.
Vincent Aguiléra, Sophie Cluet, Fanny Wattez · 2001
# $ % & (') * $ + -, * . / $ ! 01 . (/3254 6 6 798!: = 4$: 0 ? * $ + A@3%A B ! (' * ! + C ?, * D + E + C GFH/I +0J K ') % LFNMPO Q +* +R Keywords F-MPOS0+, * /# I%. T U90V 1W AX + >0V T *1%A * W W9 I%.* . I 1. INTRODUCTION YZ [%. + ? U \FNMPO 3 /D W9 % ! ( (/]% 1 ! U # N ^ %. # R> _ T + U (/#K$ . ( BV 1 `FNMPO Q ( ( I U+ T BV . (/[ * %A' %A Wa cbNY MPOd + N G . & WL * K9 % + L & + 3 R3ef ./g h ! * L GFNMPOi c ( j !K ( ( )/k l * $ P 9 U k .BV . T * %A * W ,I* .R YZ 5 +K9mT %A BV H ! n FH/I !mT % o #K$ W9/ Q ? F-MPO] BV *9 f %. +R I* XGyZzZ .R 5K$ o !K S H%. + * W#W9 T K * , * /D .X9 %.* j ! 1 .R 3. QUERIES IN XYLEME YZ L .B+ * ! + k ! G T *1%A * Wg, * 3 BV 3 V . (/E T * %A' * W?W ! s *1% F-MPO] 1 + \K$ .XI 1 T BV . (/ T *1WI W?W * ' Ua D + T _/ ! P |.RxbQ BV 0S, * / B ! *1 l F5/I . D U * W WJK /x , * . I s 1 3 c ! ? + j W9 ( + ! W K + H T/ T . 3 .R` _ 5 5%. 1 T W . UG K ( (' ( + D ! [W I%.* P{+U! a %. . I (/l 1W AX Wd + j DK ( ( ( JbNY MPOEW I%A* }s Wg{^ + $ A h* ( (/n } ? ( ( + ! , * N $ . #W / R YZ 9 & N $ V ? + ? .BV 3%. 1 T ! .0 !K (/J 3 ! ! U h Q ? $ V T K ] W W9 ( + 1 5W ! T * %A * $ s, * . /_{h BV 5 h N T %. G G* H + 9')K + W] U+ + ( D}5 ! 1Wj . * U? T H 1 Q h + T R 3.1 Xyleme Query Language F5/I . P, * /x ! U+* U r 3 d .XI 1 T + p [es-O !s ! 1W BI W9 S N ? (XG >W K + H 1W[ 9 h 3 ! + 3 . B ! n% 1 ! ' %A T % .Rt j j%A + 1 T T Q k a ,I*9 D * K9' ( WpK /x D EVzF-MPOi-* . /_ _ f Ux+* >RgI 1%A +% ? 3 ! I %SW + 3 $ . I (/G%. I 1 =+41: R Q ( s P d ] .XI %A + a Q $ ! #% aK$ [ .@3%A (/r B ! *1 Wa* T' Uj h*9 .XI H W .XnR#1⁄4` U+* j| Q G T ! U+ & + Q ! W U+ K ! %? 1 T _ 5, * /a9R(|+R q K$ BV ? BV . /r + $ + Q r P c h + 1⁄2 ! s ( 3 A * WJ * .RE B+ * ! UL 9 ] 5 * % Q * WP ! K$ # U+ IWj W 9R 3⁄4! K (/ 09 ( Q +*9 Wn7 ± 7 = 6 μ&3n:p $ ' + a WI &%. ! +RN G Q QAQ % aW DK$ . H*1 T U , * /P Q ( UD % , * .Rs1⁄4` U+* D Q 5 G ! U+ K ! % 9 G%. + * WsK /s S + ? o > h + =+4$:P $ ! S f ./G + $ + FH/I U+ K 9RLt) [ ( P & + T HFNMPOEW I%A* # +% %A + W9 U c + G 1 a 1Wr . * 1 D . # ! S * .0 + $ .