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Conceptual data model

Xem 1-20 trên 63 kết quả Conceptual data model
  • Acquiring information systems specifications from natural language description is presented as a problem class that requires a different treatment of semantics when compared with other applied NL systems such as database and operating system interfaces. Within this problem class, the specific task of obtaining explicit conceptual data models from natural language text or dialogue is being investigated. The knowledge brought to bear on this task is classified into syntactic, semantic and systems analysis knowledge.

    pdf8p buncha_1 08-05-2013 48 2   Download

  • In chapter 3, we follow the traditional approach of concentrating on the database structures and constraints during conceptual database design. The design of application programs is typically covered in software engineering courses. this chapter also present the modeling concepts of the Entity-Relationship (ER) model, which is a popular high-level conceptual data model.

    pdf38p kiepnaybinhyen_04 15-12-2015 38 1   Download

  • Power Designer là 1 công cụ thiết kế CSDL. Với Power Designer bạn có thể : Thiết kế Conceptual Data model (CDM) bằng sơ đồ thực thể kết hợp Phát sinh Physical Data Model (PDM) tương ứng trên một DBMS được chọn. Phát sinh kích bản tạo CSDL trên một DBMS đích. Phát sinh ràng buột toàn vẹn tham chiếu (referential integrity triggers) nếu chúng được hổ trợ bởi CSDL đích. Cho phép hiệu chỉnh và in các model.

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  • Contents at a Glance Introduction Part 1: Introduction to Analysis Services 1 Introduction to OLAP and Its Role in Business Intelligence 2 Multidimensional Space 3 Client/Server Architecture and Multidimensional Databases: An Overview Part 2: Creating Multidimensional Models 4 Conceptual Data Model 5 Dimensions in the Conceptual Model 6 Cubes and Multidimensional Analysis

    pdf889p trasua_123 29-12-2012 66 16   Download

  • (bq) part 2 book "essentials of systems analysis and design" has contents: designing the human interface, designing databases, systems implementation and operation, structuring system requirements - conceptual data modeling.

    pdf230p bautroibinhyen27 11-05-2017 27 1   Download

  • The objective of W3C is to transform the current Web into a Semantic Web to reuse the previous system. Many previous systems were built based on the ER model, so the upgradation and transformation of the ER model into ontology in order to reduce cost is really necessary. There are various studies aiming at transforming from ER and EER model into ontology; however, the studies have not still mentioned the transforming from the temporal databases into OWL ontology. Therefore, this paper proposes the rules for transforming the temporal components in TimeER model into OWL.

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  • The objective of W3C is to transform the current Web into a Semantic Web to reuse the previous system. Many previous systems were built based on the ER model, so the upgradation and transformation of the ER model into ontology in order to reduce cost is really necessary.

    pdf20p viconandoyle2711 29-08-2019 11 0   Download

  • .Advance Praise for Pricing, Risk, and Performance Measurement in Practice “The book represents a fresh and innovative departure from ‘traditional’ approaches to modelling of securities data. Subsequently, it also presents much more flexible ways to analyze and process the data. Even if you are not involved with re-architecting an organization’s master data handling, there are numerous ideas, principles, and nuggets that make it a worthwhile read.” –Dr.

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  • CHAPTER 3 ■ THE ENTITY DATA MODEL INSIDE AND OUT The Designer is the tool that allows you to work with the EDM and provides the functionality developers need to create, modify, and update the EDM. The Designer consists of several components to assist you in designing and editing your conceptual model. Figure 3-2 shows the different components, including the following: • • • • Designer surface: A visual surface for creating and modifying the conceptual model. Mapping Details window: The location where mappings are created or modified. The window is discussed later in the chapter.

    pdf26p tengteng17 03-01-2012 50 2   Download

  • (bq) part 1 book "fundamentals of database systems" has contents: introduction to databases, database system concepts and architecture, the relational data model and relational database constraints, conceptual modeling and database design, database programming techniques,...and other contents.

    pdf527p bautroibinhyen20 06-03-2017 26 2   Download

  • Temporal Databases presents about What is temporal DB? Applications of temporal db; valid time temporal data model; time normalization; temporal query language; conceptual design and logical design and somethings else.

    ppt90p cocacola_10 08-12-2015 34 1   Download

  • In chapter 3, we follow the traditional approach of concentrating on the database structures and constraints during conceptual database design. The design of application programs is typically covered in software engineering courses. this chapter also present the modeling concepts of the Entity-Relationship (ER) model, which is a popular high-level conceptual data model.

    pdf8p kiepnaybinhyen_02 29-12-2015 25 1   Download

  • After completing this chapter, students will be able to: Remaining activities/steps in building conceptual data model, logical database design, purpose of normalization, data redundancy and update anomalies, functional dependencies.

    ppt33p thuongdanguyetan03 18-04-2020 8 0   Download

  • This research was conducted to test the model of strategic human resource management as a competitive advantage in the construction industry specially to identify factors related to achieving competitive advantage in this industry. The empirical data were drawn from 174 construction companies in Indonesia using questionnaire method. Structural Equation Modeling techniques was used to analyze the conceptualized relationship model.

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  • This chapter presents the following content: More of an interactive demonstration than an animation, demonstrate conceptual execution model of Type II nested queries, type II nested queries are important for solving problems involving difference operator, problems with difference are not common,...

    ppt29p nanhankhuoctai9 23-06-2020 3 0   Download

  • Mô hình ER được dùng để xây dựng mô hình dữ liệu ý niệm (Conceptual data modeling) nhằm biểu diễn cấu trúc và các ràng buộc của CSDL. Mô hình ER như một công cụ để trao đổi ý tưởng giữa nhà thiết kế và người dùng cuối trong giai đoạn phân tích. Nó độc lập với DBMS và quá trình thi công database.

    ppt75p thienthanoze 31-10-2010 570 165   Download

  • In July 2008 Microsoft released the first version of the ADO.NET Entity Framework as part of the Visual Studio 2008 Service Pack 1 as well as the .NET Framework 3.5 Service Pack 1. At the time, Microsoft LINQ (Language Integrated Query) and LINQ to SQL had been out for a while and were gaining a lot of attention.

    pdf281p tengteng6 26-11-2011 155 58   Download

  • Mô hình quan hệ – thực thể ER (Entity Relationship Model – ER Model) được dùng để thiết kế CSDL ở mức khái niệm (Conceptual data modeling) Biểu diễn trừu tượng cấu trúc của CSDL Mô hình ER như 1 công cụ để trao đổi ý tưởng giữa nhà thiết kế và người dùng cuối trong giai đoạn phân tích. Nó độc lập với DBMS và quá trình hiện thực database. 4 .Sơ đồ quan hệ – thực thể Sơ đồ quan hệ thực thể (entity relationship diagram - ERD) là biểu diễn hình ảnh của quan hệ thực thể Ba phần tử...

    pdf44p muathu_102 28-01-2013 202 41   Download

  • Microsoft’s ADO.NET Entity Framework, known widely as EF, introduced out-of-thebox Object Relational Mapping to .NET and Visual Studio. Central to Entity Framework was the Entity Data Model, a conceptual model of your application domain that maps back to the schema of your database. This conceptual model describes the core classes in your application. Entity Framework uses this conceptual model while querying from the database, creating objects from that data and then persisting changes back to the database....

    pdf192p kenichi_kudo 11-11-2012 158 40   Download

  • Power Designer là 1 công cụ thiết kế CSD. Với Power Designer bạn có thể: Thiết kế Conceptual Data model bằng so đồ thực thể kết hợp

    doc37p hnguyenaa 23-01-2012 264 29   Download

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