The optimum execution order of queries in linear storage
نویسندگان
چکیده
منابع مشابه
The Optimum Execution Order of Queries in Linear Storage
Consider a file that resides in a linear storage device with one read head. Suppose that several queries on the file must be answered simultaneously with no prespecified order. To satisfy the ith query the head must be located at point I., of the file and traverse the file up to point R, without interruptions, where 1~ L, < R, 4 N denote positions in the file. We wish to find the execution orde...
متن کاملon the effect of linear & non-linear texts on students comprehension and recalling
چکیده ندارد.
15 صفحه اولEstablishment an international prison in order to Execution of criminal sentences of the International Criminal Court
However, the punishment of imprisonment has become the main response of domestic and international arsenals; But now one of the most important challenges facing the International Criminal Court is how to enforce its sentences, and especially the execution of imprisonment.according to the Statute of the Court, imprisonment is carried out through voluntary agreements with the receiving countries ...
متن کاملLinear vs . Order Constraint Queries Over
We consider relational databases organized over an ordered domain with some additional relations|a typical example is the ordered domain of rational numbers together with the ternary relation + of addition. In the focus of our study are the rst order queries that are invariant under order-preserving \permutations"|such queries are called (order-)generic. We show that for an arbitrary ordered di...
متن کاملthe effect of the record infancy in crimilly acts of guilties (in karaj city)
چکیده یکی از مهمترین دغدغه های بزرگ جوامع بشری، از دیر باز تا کنون که ذهن پژوهشگران و متخصصان بهداشت روانی و اجتماعی و دولتها رابه خود مشغول داشته، مسأله ی بزهکاری می باشد. شناخت کامل پدیده ی بزهکاری و بزهکار، علل وعوامل سقوط یک انسان، چگونگی درمان وی و درنهایت پیشگیری ازبزهکاری ودریک کلام سالم سازی یک جامعه، رسالت عظیم، انسانی ومقدسی می باشد که با بررسی شخصیت مجرم یعنی[ انسانی که تحت شرای...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Information Processing Letters
سال: 1990
ISSN: 0020-0190
DOI: 10.1016/0020-0190(90)90083-a