Relational data model

This paper is structured as follows. The following section presents related work. Section 3 summarizes the characteristics of the two datasets utilized in the model and the system’s overall architecture for image-based disease diagnosis. Section 4 provides our experimental results that compare the performance metrics with other studies.

6p viengfa 28-10-2024 1 1   Download

This paper attempt to analyze the link between TBT and SPS measures on Vietnam’s seafood export to major destinations namely the US, the EU, Korea, Japan and China. To tackle this problem, the author first offers a thorough review of the literature related to evaluation of trade barriers and specifically non-tariff barriers on trade to obtain a comprehensive view of estimation methods and data used.

10p toduongg 24-08-2024 0 0   Download

Bài giảng "Lưu trữ và xử lý dữ liệu lớn: Chương 4 - Cơ sở dữ liệu phi quan hệ NoSQL (Phần 1)" trình bày các nội dung chính sau đây: Kỷ nguyên của cơ sở dữ liệu, trường hợp sử dụng NoSQL, mô hình dữ liệu quan hệ, kho lưu trữ cơ sở dữ liệu đồ thị;... Mời các bạn cùng tham khảo!

43p gaupanda025 09-04-2024 6 3   Download

This research develops a rich theoretical and empirical understanding of embeddedness by way of three dimensions (structural, relational and cultural), and investigates its implications for actors’ value co-creation behaviours and value-in-context outcomes. In addition, the research refines co-creation perspectives by examining a central boundary condition of co-creation processes. The data was collected in an online service environment and was analysed using structural equation modelling techniques.

183p runthenight04 02-02-2023 6 2   Download

The increasingly important role played by family firms in China’s fledging capital market calls for a better understanding of how it works and is governed. This study aims to explore how corporate governance issues in family firms are tackled from the perspective of investor protection. The thesis addresses the question by first presenting theoretical models showing the relations among investor protection, family governance, and agency costs in family firms.

229p runthenight04 02-02-2023 9 4   Download

Bài giảng Cơ sở dữ liệu (Database): Chương 3 - TS. Đặng Thị Thu Hiền cung cấp cho học viên các kiến thức về Mô hình quan hệ (Relational Data Model); khái niệm trong mô hình quan hệ; ràng buộc toàn vẹn; các phép toán cập nhật; các phép toán đại số quan hệ; cách chuyển từ mô hình ER sang mô hình quan hệ;... Mời các bạn cùng tham khảo chi tiết nội dung bài giảng!

86p hanthienngao 13-12-2021 43 6   Download

As more Koreans invested in Vietnam, the number of foreign students in Korea increased due to the perception that studying in Korea would be beneficial for employment within Vietnam. Also, the ratio of international students entering graduate school is increasing. In this study, the researches related to Vietnam were investigated, focusing on the articles and papers of journals searched through the Vietnam keyword of the National Assembly Library. We also have examined research trends through Big Data Analysis.

8p sotritu 18-09-2021 6 1   Download

The thesis is devoted to constructing and evaluating versions of the SM extended with an A4 symmetry to explain some of the problems of neutrino physics. Within these extended models, the results on neutrino masses and mixing, derived by the perturbation method, are very closed to the global fit. In two models, a relation between the Dirac CPV phase and the mixing angles is established. In particular, the models predict Dirac CPV phase δCP and effective mass of neutrinoless double beta decay jhmeeij in good agreement with the current experimental data.

26p capheviahe27 23-02-2021 18 3   Download

This study used the exploratory factor analysis (EFA), confirmative factor analysis (CFA), structural equation modeling (SEM) and set of five determinants affecting to the city’s AC related to finance, society, infrastructure, human resources, nature. A socio-economic data was conducted in the survey of 1,168 households in Da Nang city.

11p larachdumlanat129 14-01-2021 15 1   Download

This study has presented the results of applying STEAM education model in teaching Geography at Phan Van Tri High School, Can Tho City. The study relied on a mixed method in collecting, assessing and analyzing collected data. Specifically, literature review, fact finding and pedagogical experiment are three main methods which were used in this study. The research result has shown three main issues related to how to teaching Geography through STEAM education model.

18p koxih_kothogmih5 04-09-2020 21 1   Download

The main contents of the chapter consist of the following: The relational algebra, unary relational operations, relational algebra operations from set theory, binary relational operations, ER-to-Relational mapping algorithm, mapping EER model constructs to relations.

40p nanhankhuoctai10 23-07-2020 17 2   Download

The main contents of the chapter consist of the following: Function M-files, syntax of function M-Files, comments, multiple input and output functions, relational model concepts, relational model constraints and relational database schemas, update operations and dealing with constraint violations.

34p nanhankhuoctai10 23-07-2020 21 1   Download

Furthermore, experiments on the task of RE proved that data representation is one of the most influential factors to the model’s performance but still has many limitations. We propose a compositional embedding that combines several dominant linguistic as well as architectural features and dependency tree normalization techniques for generating rich representations for both words and dependency relations in the SDP

82p tamynhan1 13-06-2020 17 3   Download

Research records data related to small-scale aquaponic systems were applied using two pilot models, Floating bed systems (FBS) and Media Filled Systems (MFS), for effective testing as well as assessment. Aquaponic is a sort of bioreactor that combines the process of fish farming and use of plants to recycle wastewater, which is the combination of aquaculture and hydroponics.

10p queencongchua2 29-08-2019 27 3   Download

Bài giảng Chương 2: Mô hình dữ liệu quan hệ, trình bày các nội dung sau:Các định nghĩa của mô hình dữ liệu quan hệ, quan hệ, lược đồ quan hệ, các loại khóa, ràng buộc bảo toàn, bảo toàn thực thể, bảo toàn tham chiếu, bảo toàn miền.

43p saobien_09 06-02-2018 99 3   Download

We extend the relational model of data to consider classes as attribute values, thereby to allow eary and convernient the representation of quantified queries. Facts regarding object classes can be stored and manipulated in the same way as facts regarding object instances. Our model is upwards compatible with the standard relational model

8p binhminhmuatrenngondoithonggio 09-06-2017 35 2   Download

Bài giảng "Thương mại điện tử - Lecture 8: Thiết kế Data Model - WEB TMDT" trình bày các nội dung: Thiết kế dự án web - Project Design; mô hình dữ liệu Data Model, Entity-Relation Diagram, mô hình qui trình - Process Model, Functional Decomposition Diagram. Mời các bạn cùng tham khảo.

17p bautroibinhyen13 10-01-2017 63 6   Download

Learning objectives of this chapter include: Learn how to transform E-R data models into relational designs; practice the normalization process from chapter 2; understand the need for denormalization, learn how to represent weak entities with the relational model; know how to represent 1:1, 1:N, and N:M binary relationships.

40p tangtuy17 11-07-2016 44 2   Download

The thesis includes four chapters together a conclusion in the last. Chapter 1 mentions about introduction that leads to motivation of this study. Chapter 2 presents the methodology related to multi scale analysis along with the code theories at different scale for RELAP5, CTF and Ansys CFX with focus on phase change models. The verification and assessment of modeling used in these codes versus experiment data are presented in chapter 3.

116p change05 08-06-2016 34 5   Download

In this chapter, The contents concentrate on describing the basic principles of the relational model of data, begin by defining the modeling concepts and notation of the relational model, discussion of relational constraints that are considered an important part of the relational model and are automatically enforced in most relational DBMSs, defines the update operations of the relational model,...

29p kiepnaybinhyen_04 15-12-2015 60 2   Download