Inclusion of new types in relational database systems
Inclusion of new types in relational database systems
... data types 2) the definition of new operators for these data types 3) the implementation of new access methods for data types 4) optimized query processing for commands containing new data types ... which include new data types and operators and ways to allow access methods to be used for new data types. 1. INTRODUCTION The collection of built -in data types in a data base system (e.g. integer, ... described in [ONG84]. Our initial experience with the system is that dynamic linking is not preferable to static linking. One problem is that initial loading of routines is slow. Also, the ADT routines...
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LINH DAM NEW TOWN - SOLUTION FOR THE HIGH-DENSITY DEVELOPMENT OF NEW SETTLEMENTS IN THE SOUTH-WEST OF HANOI
... components: Bac Linh Dam (North of Linh Dam), Linh Dam peninsula in the middle and Linh Dam expansion (South of Linh Dam). The success of the project has set the stage for a series of New Towns that ... typically found in the existing community. In addition, compact development of a New Town is a good option in preserving the green belt, and allowing full utilization of existing infrastructures. ... climate. Among these, the outstanding point is the area of high- storey apartments and office buildings in the center of Linh Dam peninsula, surrounding by low-storey buildings, parks, open spaces and...
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LINH DAM NEW TOWN - SOLUTION FOR THE HIGH-DENSITY DEVELOPMENT OF NEW SETTLEMENTS IN THE SOUTH-WEST OF HANOI
... factors (living and working environments in cities, home-town customs, working conditions and relating policies) were identified as the determinants affecting to jobs and daily life of female rural ... 100% labors selling goods in the streets and in- waiting labor market have to work in unsafe environments; their daily life are rather poor. 22.86% female freelane labors live in boarding houses characterized ... of Rural Women Working Part-time in Hanoi ABSTRACT At the present, about 53% female rural labors work partime in Hanoi. With a low literacy level, they often choose jobs as family care, selling...
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Tài liệu Báo cáo khoa học: "The Utility of a Graphical Representation of Discourse Structure in Spoken Dialogue Systems" ppt
... perception of the system in terms of their ability to concen-trate on the instruction (Q3), in terms of their incli-nation to reuse the system (Q6) and in terms of the system’s matching of their ... steps in approaching this problem. Correct answers are also highlighted. We would like to reiterate that the goal of this study is to investigate if making certain types of discourse information ... hypothesized that by having access to this information, users will have a better idea of where instruction is heading, thus facilitating their understanding of the relevance of the current topic...
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Báo cáo khoa học: "EVALUATION OF NATURAL LANGUAGE INTERFACES TO DATABASE SYSTEMS: A PANEL DISCUSSION " ppt
... need further work. This panel brings together a good sampling of the people involved in these tests including Indlv iduals intimately involved with the above systems. The position papers that ... even informal evaluations of systems conducted. Recently, this has begun to change. In the last several years, many of the current generation of natural language access to database systems ... important linguistic phenomena to allow for? What other kinds of interactions, beside retrievals, do users request? How good are systems at satisfying users? How good are users at finding ways...
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Query Optimization In Compressed Database Systems pdf
... discuss related work in Section 5 and conclude in Sec-tion 6.2. DATABASE COMPRESSIONThe nature of query processing in databases imposes sev-eral constraints in choosing a suitable database compressionmethod. ... con-tains 61 attributes, out of which 26 are string-valued, consti-tuting 60% of the total database size. Surprisingly, there hasnot been much work in the database literature on compress-ing ... on string fieldsMultiplicative FactorOPTMin-2Min-1Two-StepBaseline41101000123Number of join conditions on string fieldsMultiplicative FactorOPTMin-2Min-1Two-StepBaseline411010010000123Number...
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Báo cáo khoa học: "The role of positive feedback in Intelligent Tutoring Systems" ppt
... in one-on-one tutoring, its computational model-ing, and its application to the design of moreeffective Intelligent Tutoring Systems. A datacollection of tutoring sessions in the domain of basic Computer ... 1990), such speedindicates a quick skimming of the text, whereasreading for learning typically has a lower speed, in the order of 200 words/minute.5 Future workThe main goal of this research ... feed-back in ITSs in the literature. However, there isan increasing amount of evidence that suggests thatpositive feedback may be very important in enhanc-ing students’ learning. In a detailed...
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ON CONSISTENCY CHECKING OF SPATIAL RELATIONSHIPS IN CONTENT-BASED IMAGE DATABASE SYSTEMS potx
... is behind B in thepicture p, iff the z-coordinate of each point in p(A) is greater than the z-coordinate of each point in p(B).• p satisfies the relationship A inside B, stating that A is inside ... the relationship A left -of B, stating that A is to the left of B in the picture p, iff the x-coordinate of each point in p (A) is less than thex-coordinate of each point in p(B).• p satisfies the ... stating that A is above B in the picturep, iff the y-coo rdinate of each point in p(A) is greater than the y-coordinate of each point in p(B).• p satisfies the relationship A behind B, stating...
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An Analysis of Geometric Modeling in Database Systems docx
... orientation in database systems, which is applied to characterize the engineering database systems investigated in the remainder of this section. 3.1 The (Pure) Relational Database Systems In the introduction ... Phrases: Engineering database systems, geometric modeling, object-oriented database systems INTRODUCTION Motivation The last few years have shown a rapid increase in the use of robots in mechanical ... means, in terms of the world model database, changing the location of object 3~. In our particular case this is achieved (not regarding the problem of collision handling) by the following (standard)...
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Từ khóa: state of the art in distributed file systems increasing performancedictionary of new words in englishcauses of new imperialism in the late 19th centurylist of new words in english dictionarylist of new words in the oxford english dictionarygovernment of new england in the 1700sletter of credit types in indiauniversity of new york in pragueadvantages and disadvantages of new technology in educationexamples of data types in computerinitialization of tropical cyclones in numerical prediction systems§ 10 non recognition and the european community declaration on the guidelines on the recognition of new states in eastern europe and in the soviet union9 2 new features in oracle9i database reference9 0 1 new features in oracle9i database referenceobtaining a list of all views in a databaseNghiên cứu sự biến đổi một số cytokin ở bệnh nhân xơ cứng bì hệ thốngNghiên cứu tổ chức pha chế, đánh giá chất lượng thuốc tiêm truyền trong điều kiện dã ngoạiMột số giải pháp nâng cao chất lượng streaming thích ứng video trên nền giao thức HTTPNghiên cứu tổ chức chạy tàu hàng cố định theo thời gian trên đường sắt việt namGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWANĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWANQuản lý hoạt động học tập của học sinh theo hướng phát triển kỹ năng học tập hợp tác tại các trường phổ thông dân tộc bán trú huyện ba chẽ, tỉnh quảng ninhNghiên cứu, xây dựng phần mềm smartscan và ứng dụng trong bảo vệ mạng máy tính chuyên dùngNghiên cứu về mô hình thống kê học sâu và ứng dụng trong nhận dạng chữ viết tay hạn chếTìm hiểu công cụ đánh giá hệ thống đảm bảo an toàn hệ thống thông tinSở hữu ruộng đất và kinh tế nông nghiệp châu ôn (lạng sơn) nửa đầu thế kỷ XIXChuong 2 nhận dạng rui roBT Tieng anh 6 UNIT 2chuong 1 tong quan quan tri rui roGiáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtĐổi mới quản lý tài chính trong hoạt động khoa học xã hội trường hợp viện hàn lâm khoa học xã hội việt namHIỆU QUẢ CỦA MÔ HÌNH XỬ LÝ BÙN HOẠT TÍNH BẰNG KIỀMMÔN TRUYỀN THÔNG MARKETING TÍCH HỢPQUẢN LÝ VÀ TÁI CHẾ NHỰA Ở HOA KỲ