'Entity relationship' diaporamas de présentation

Chapter 2

Chapter 2. Data Model Database Systems: Design, Implementation, and Management, Sixth Edition, Rob and Coronel. In this chapter, you will learn:. Why data models are important About the basic data-modeling building blocks What business rules are and how they affect database design

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Week 7 October 10

Week 7 October 10. Database Planning and Design. Embedded SQL and Host Variable. Host variable. Value assigned to the host variable. Output. All sales revenue for store number 101. Host Variable, Lower Function, Wildcards, Calculation. Calculation.

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Chapter 7

Chapter 7. Conceptual Data Modeling. Representation of organizational data Purpose is to show rules about the meaning and interrelationships among data Entity-Relationship (E-R) diagrams are commonly used to show how data are organized

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Database Systems: Design, Implementation, and Management Ninth Edition

Database Systems: Design, Implementation, and Management Ninth Edition. Chapter 4 Entity Relationship (ER) Modeling. Objectives. In this chapter, students will learn: The main characteristics of entity relationship components

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Chapter 2

Chapter 2. Data Models Database Systems: Design, Implementation, and Management, Seventh Edition, Rob and Coronel. The Importance of Data Models. Data models Relatively simple representations, usually graphical, of complex real-world data structures

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Data Resource Management

3. Data Resource Management. Learning Objectives. 3. Explain the importance of implementing data resource management processes and technologies in an organization. Understand the advantages of a database management approach to managing the data resources of a business.

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Systems Development Steps, Tools, and Techniques

Systems Development Steps, Tools, and Techniques. Chapter 5. MAIN MAP. KW = Knowledge Workers SDLC = Systems Development Life Cycle. Plan Analyze Design Develop Test Implement Maintain. INTRODUCTION. Why do businesses build information systems ?

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5 . ?? - ??? ?? (Entity-Relationship Model)

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DATABASE & INFORMATION MODELS

DATABASE & INFORMATION MODELS. Data vs Information. Data : Collection of letters, numbers or facts Information : Processed data that provides value. What is Database ?. A database is a repository of data, designed to support efficient data storage, retrieval and maintenance

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Entity Relationship Modeling

Entity Relationship Modeling. CSCI 4800/6800 March 30, 2005. Introduction. Entity Relationship Modeling (ERM) a technique used to analyze & model the data in organizations using an Entity Relationship (E-R) diagram. Definitions. Entity an aggregation of a number of data elements

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Summary

Summary. Fundamentals of Object Oriented Modeling. Abstraction. Abstraction is a fundamental principle of modeling

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What is an Entity R elationship Diagram?

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DATA MODELING AND DATABASE DESIGN Part 1

DATA MODELING AND DATABASE DESIGN Part 1. Objectives. Learn the stages of system development. Define basic types of data relationships. Recognize the optionality and degree of a relationship Read an entity relationship diagram.

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Entity Relationship Modeling and ERDs

Entity Relationship Modeling and ERDs. What Will I Learn?. In this lesson, you will learn to: Define the meaning of implementation-free as it relates to data models and database design implementation List the four goals of entity relationship modeling

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Database and DBMS

Database and DBMS. Why?. Databases can be considered as electronic filing systems. Computing power and amount of data is increasing . How do you convert all that data to useful information , tailored to your needs. Data vs information. Data + Structure = Information. Miniworld.

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Exercises

Exercises. 1. In a course registration system, for the event student registers for classes , create an event table entry listing the event, trigger, source, activity, response(s), and destination(s). For the event time to produce grade reports , create another event table entry.

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ENTITY RELATIONSHIP DIAGRAMS

ENTITY RELATIONSHIP DIAGRAMS. Moya messam. What is an entity relationship diagram?. Definition: An entity-relationship (ER) diagram is a specialized graphic that illustrates the interrelationships between entities in a database. What are the symbols used in a entity relationship diagram? .

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Answering Questions through Understanding and Analysis (AQUA) BBN Technologies

Answering Questions through Understanding and Analysis (AQUA) BBN Technologies. Objectives. Develop Comprehensive system Use statistical language models, knowledge sources, and formal reasoning Develop proposition recognition algorithm Interpretation by Entity relationship

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Agenda for Week (1/28 & 1/30)

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