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Conceptual data model

Xem 1-20 trên 49 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 36 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 24 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.

    doc37p hoangvietmk07071990 02-10-2010 307 89   Download

  • 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 53 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 19 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.

    pdf20p thuyliebe 05-10-2018 7 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.

    pdf398p camchuong_1 04-12-2012 62 15   Download

  • 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 42 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 17 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 25 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 14 1   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 544 165   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 128 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 .

    pdf44p muathu_102 28-01-2013 173 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 148 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 198 29   Download

  • Modeling Hydrologic Change: Statistical Methods is about modeling systems where change has affected data that will be used to calibrate and test models of the systems and where models will be used to forecast system responses after change occurs. The focus is not on the hydrology. Instead, hydrology serves as the discipline from which the applications are drawn to illustrate the principles of modeling and the detection of change. All four elements of the modeling process are discussed: conceptualization, formulation, calibration, and verification.

    pdf434p crazy_sms 10-05-2012 66 18   Download

  • Hiểu các khái niệm trong việc mô hình hóa dữ liệu ở mức quan niệm: mô hình quan niệm dữ liệu (conceptual data model), mô hình thực thể - mối kết hợp (entity-relationship diagram), loại thực thể (entity type),

    pdf143p doremon_12 24-12-2013 79 11   Download

  • This module provides an in-depth discussion of logical data design. Students examine the relationship of logical data design to conceptual design. Logical entities, their attributes, and the relationships among them are extensively examined. Finally, students learn how to create a logical data model from entities, attributes, and relationships.

    pdf4p maiphuong 11-08-2009 66 10   Download

  • Trọn bộ bài giảng Phát triển hệ thống thông tin kinh tế gồm có 10 chương với những nội dung cụ thể như: Môi trường phát triển hệ thống, lựa chọn và lập kế hoạch phát triển hệ thống, xác định yêu cầu hệ thống, mô hình nghiệp vụ (process modeling), mô hình dữ liệu quan niệm (conceptual data modeling), thiết kế cơ sở dữ liệu, thiết kế giao diện, kiểm thử hệ thống, bảo trì hệ thống.

    pdf11p nhanmotchut_1 04-10-2016 27 5   Download

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