'Physical data models' diaporamas de présentation

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Maps as Numbers

Maps as Numbers

Maps as Numbers. Getting Started with GIS Chapter 3. Chapter 3: Maps as Numbers. 3.1 Representing Maps as Numbers 3.2 Structuring Attributes 3.3 Structuring Maps 3.4 Why Topology Matters 3.5 Formats for GIS Data 3.6 Exchanging Data . Maps as Numbers.

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612 views • 51 slides
An Introduction to Systems Modeling

An Introduction to Systems Modeling

An Introduction to Systems Modeling. Systems Modeling One way to structure unstructured problems is to draw models. A model is a representation of reality. Just as a picture is worth a thousand words, most system models are pictorial representations of reality.

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288 views • 28 slides
Chapter 2

Chapter 2

Chapter 2. Database Environment. Chapter 2 - Objectives. Purpose of three-level database architecture. Contents of external, conceptual, and internal levels. Purpose of external/conceptual and conceptual/internal mappings. Meaning of logical and physical data independence.

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271 views • 27 slides
Database System Concepts and Architecture

Database System Concepts and Architecture

Database System Concepts and Architecture. Dr. Ali Obaidi. Data Models. A collection of concepts that can be used to describe the structure of a database (data types, relationships, and constraints) basic operations (retrieval and updates)

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436 views • 24 slides
LECTURE 2 DATABASE SYSTEM CONCEPTS AND ARCHITECTURE

LECTURE 2 DATABASE SYSTEM CONCEPTS AND ARCHITECTURE

LECTURE 2 DATABASE SYSTEM CONCEPTS AND ARCHITECTURE. What is a Data Model?. A collection of concepts that can be used to describe the structure of a database Structure of a database - data types, relationships, and constraints that apply to the data .

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423 views • 22 slides
Chapter 2 Database System Concepts and Architecture

Chapter 2 Database System Concepts and Architecture

Chapter 2 Database System Concepts and Architecture. Presented & Modified by Mahmoud Rafeek Alfarra Lecturer in CST Kan younis. Chapter 2 Outline. Database System Architecture Three-Schema Architecture and Data Independence Data Models, Schemas, and Instances Database Languages.

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424 views • 18 slides
UFCE8V-20-3 Information Systems Development 3 (SHAPE HK)

UFCE8V-20-3 Information Systems Development 3 (SHAPE HK)

UFCE8V-20-3 Information Systems Development 3 (SHAPE HK). Lecture 5 Database Theory & Practice (1) : Data Modelling. What is data modelling?. Data modelling is concerned with the design of the data content and structure of the database.

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256 views • 13 slides

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