Download PDF by Dr. Hiroshi Ishikawa (auth.): Object-Oriented Database System: Design and Implementation


By Dr. Hiroshi Ishikawa (auth.)

ISBN-10: 4431683089

ISBN-13: 9784431683087

ISBN-10: 4431683100

ISBN-13: 9784431683100

Computer technological know-how Workbench is a monograph sequence that allows you to offer you an in­ intensity operating wisdom of present advancements in desktop know-how. each quantity during this sequence will take care of a subject of value in machine technology and problematic on the way you your self can construct structures regarding the most subject matter. it is possible for you to to enhance various platforms, together with software program instruments, special effects, laptop animation, database administration platforms, and computer-aided layout and production platforms. desktop technology Workbench represents an incredible new contribution within the box of sensible desktop know-how. Tosiyasu L. Kunii Preface The aim of this booklet is to provide concrete solutions to questions corresponding to what item­ orientated databases are, why they're wanted, how they're applied, and the way they're utilized, by means of describing a study prototype object-oriented database approach known as Jasmine. that's, this ebook is aimed toward making a constant view to object-oriented databases. The contents of this publication are without delay in response to the result of the Jasmine venture performed at Fujitsu Laboratories, Ltd. The ebook is a refined model of my doctoral dissertation, including study papers which i've got authored and published.

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Extra resources for Object-Oriented Database System: Design and Implementation for Advanced Applications

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Based on equalities. union (1) union: {T}, {U} -> {V} where V =LUB(T, U) (2) union(S 1, S 2) = {vi v belongs to S 1 or v belongs to S 2} This operator returns union of two input sets. difference (1) difference: {T}, {U} -> {T} (2) difference(S 1, S2) = {511 51 belongs to S 1 and 51 does not belong to S2} This operator returns the difference of two input sets. intersection (1) intersection: {T}, {U} -> {V} where V =GLB(T, U) (2) intersection(S 1, S2) = {vlv belongs to S 1 and v belongs to S2} This operator returns the intersection of two input sets.

16 CHAPTER 2. DATA MODEL (2) A method m is a pair (n, s) where n is a method name and s is a signature (S 1, S2, ... , Sn -> S). m is defined on S1. DEFlN1TlON 6. We define the notion of interpretations I associated with types. (1) I(Di) = Di. (2) ICc) = a function from c to a set of object identifiers. (3)/(lv i belongs to I(Ti) for i=I,2, ... , n }. (4) I«(T}) = {{vI, v2, ... , vn}lvi belongsto/(Dfori=l, 2, ... , n}. DEFINITlON 7. We define the notion of partial order <= T between two types.

The absolute data is translated from the relative data and is used for actual display. The procedural attributes for GRAPHICS also include input, output, display, move, and change-size. TEXT objects have attributes such as string data for storage and graphics text data for display. The TEXT procedural attributes also include input, output, display, move, and change-size. TEXT objects can contain other arbitrary objects as subtexts. IMAGE, GRAPHICS, and TEXT have the same interface for the same manipulation such as move although each implementation differs from one to another.

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Object-Oriented Database System: Design and Implementation for Advanced Applications by Dr. Hiroshi Ishikawa (auth.)

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