------------------------------------------------- Course Objectives tested in this Exam are: * ------------------------------------------------- Understand normalization concepts and data structures * ------------------------------------------------- Complete physical database design * ------------------------------------------------- Perform database query processing using SQL * ------------------------------------------------- Understand multi-user and administration issues
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3 Steps in Database Creation 7 Entity Relationship Diagram 5/30/2011 8 Logical Model & Normalization 6/06/2011 9 Microsoft Access Database 6/13/2011 10 Microsoft Access Database
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Entity-Relationship Diagrams (ERD) Data models are tools used in analysis to describe the data requirements and assumptions in the system from a top-down perspective. They also set the stage for the design of databases later on in the SDLC. There are three basic elements in ER models: Entities are the "things" about which we seek information. Attributes are the data we collect about the entities. Relationships provide the structure needed to draw information from multiple entities. Generally
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MODULE: DATABASE DESIGN & DEVELOPMENT ASSIGNMENT TITLE: VETERINARY SURGERY DATABASE DEVELOPMENT Table of Content Task 1 Page 2 Task 2 Page 5 Task 3 Page 14 Task 4 Page 28 Task 5 Page 30 Reference Page 32 Bibliography Page 33 Task 1 Question: AIM: Draw an Entity Relationship Data Model that describes the content and structure of the data held by Petcare. Specify the cardinality ratio and participation constraint of each relationship type. Answer: I have prepared this assignment
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entire BIRDEM hospital in which data maintenance and retrieval are in perfect harmony and speedy. Sample SQL-based queries executed on the designed system are also demonstrated. Keywords- Database system‚ entity relationship relational model‚ normalization‚ SQL-based queries. Introduction diagram‚ Mohammad Saber Department of Computer Science and Engineering Ahsanullah University of Science and Technology (AUST)
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1. Front-end and back-end selection 2 3.2.2. Front-end selection 2 3.3. Economical feasibility 2 3.4. Operational Feasibility 2 3.5. Schedule feasibility 2 4. General Information 2 4.1. Entities 2 4.2. ERD Diagram 2 4.3. Data Dictionary and Normalization 2 5. Testing 2 6. Conclusion 2 List of Tables Table 1: Entity course 2 Table 2: Entity Lecturer 2 Table 3: Entity Room 2 Table 4: Entity subject 2 Table 5: Entity subject_timetable 2 1. Introduction
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The Evolution of Data Models The quest for better data management has led to different models that attempt to resolve the file system’s critical shortcomings. Because each data model evolved from its predecessors‚ it is essential to examine the major data models in roughly chronological order. 1.1 The Hierarchical Model A Hierarchical Database Model is a data model in which the data is organized into a tree-like structure. The structure allows representing information using parent/child relationships:
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System 2-1 2.4 Graphical User Interface 2-1 2.5 Normalization 2-2 2.6 Programming Language Theories 2-3 2.7 Database Theory 2-4 2.8 Picture Manipulation Theory 3 Theoretical Framework 2-4 Computerized Reservation System for KTV Bar with Point of Sale 3-1 3.1 Introduction 3-1 3.2 System Design Specification 3-1 3.2.1 Data Flow Diagram (DFD) 3-1 3.2.2 Entity Relationship Diagram (ERD) 3-2 3-3 3.3 Summary 3-3 Symbols for Flow Diagram
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The Physical Data Model (PDM) describes how the information represented in the Logical Data Model is actually implemented‚ how the information-exchange requirements are implemented‚ and how the data entities and their relationships are maintained. There should be a mapping from a given Logical Data Model to the Physical Data Model if both models are used. The form of the Physical Data Model can vary greatly‚ as shown in Figure 31. For some purposes‚ an additional entity-relationship style diagram
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FACULTY OF MEDIA‚ INFORMATION & COMMUNICATION TECHNOLOGY DATABASE SYSTEMS 201 Due Date: Chapters Covered: 06 MAY 2013 Database System Data Analysis Entity Relationship Modeling Enhanced E-R Models Normalization Structured Query Language Joins and Views Sub queries and Schema 100 DIP –DBS 201 Maximum Marks: Unique Assignment Number: Background This assignment is based on the content to be covered in the first semester. Naturally all material provided or prescribed will be used. Purpose: The purpose
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