relational model database management pdf

... Chapter Relational Model Relational Model Concept Relational database: a set of relations  Each relation resembles a table of values ... tuple Relational Data Model  The relational model is a combination of three components: ◦ Structural Part: the database as a collection of relations ◦ Integrity Part: maintained in the relational ... each column  TheUser terms commonly Model usedProgrammer Row Column Table Tuple Attribute Relation Record Field File Relational Data Model The relational model uses a collection of tables to

Ngày tải lên: 15/05/2017, 10:33

... choice 5. Database management systems - 4. Textual, relational and xml databases – page 5 Relational databases With a relational database these problems are solved. A relational database is a database ... editor • A relational database is a database which uses the relational data model for storing structured data • Relational databases... types of database can meet your needs? A relational ... between the two tables. 5. Database management systems - 4. Textual, relational and xml databases – page 8 Relational databases One of the benefits of the relational data model is that it allows

Ngày tải lên: 31/03/2014, 20:20

... 5 Database management systems - 5 Relational databases and SQL basics – page 18 ... modelling for a relational database Good luck! 5 Database management systems - 5 Relational ... 5. Database management systems - 5. Relational databases and SQL basics – page 1 Information Management Resource Kit Module on Management of Electronic Documents UNIT 5. DATABASE MANAGEMENT ... the database can be created and manipulated using the Structured Query Language (SQL), which allows interaction with relational databases. 5. Database management systems - 5. Relational databases

Ngày tải lên: 31/03/2014, 20:20

... set of tools for relational database management A textual database A set of tools for textual database management Click on your answer Database management systems - Textual databases and cds/isis ... Set of Information Systems), is a textual database management system designed to build and manage textual databases Database management systems - Textual databases and cds/isis basics – page What ... Information Management Resource Kit Module on Management of Electronic Documents UNIT DATABASE MANAGEMENT SYSTEMS LESSON TEXTUAL DATABASES AND CDS/ISIS BASICS NOTE Please note that this PDF version

Ngày tải lên: 31/03/2014, 20:20

... the database development life cycle Relational Database Design 1A.2 INTRODUCTION TO DATABASE MANAGEMENT SYSTEM Introduction to Relational Database Management System Introduction to Database Management ... Internal level Relational Database Design 1A.14 FUNCTIONAL COMPONENTS OF A DATABASE MANAGEMENT SYSTEM Introduction to Relational Database Management System Functional Components of a Database Management ... end-users, and database administrators (DBA) ©NIIT 1A.25 Introduction to Relational Database Management System Relational Database Design Lesson / Slide of 12 Introduction to Relational Database Management

Ngày tải lên: 01/08/2014, 09:22

... database, the task becomes more complicated, and other features of a DBMS come into play We discuss the impact of concurrency on database design in Section 16. 10 We discuss distributed databases ... alternative DBMS products 16. 1 INTRODUCTION TO PHYSICAL DATABASE DESIGN Like all other aspects of database design, physical design must... of a database design for good performance This chapter ... case than with an index on age, sal 16. 7 OVERVIEW OF DATABASE TUNING After the initial phase of database design, actual use of the database. .. example, an index on employee ids could speed

Ngày tải lên: 08/08/2014, 18:22

... Database Management Systems [150] H.-T Chou and D DeWitt An evaluation of buffer management strategies for relational database systems In Proc Intl Conf on Very Large Databases, 1985 ... 852 Database Management Systems [106 ] P Buneman, S Davidson, G Hillebrand, and D Suciu A query language and... multidatabase transaction management In Proc Intl Conf on Very Large Databases, ... multidatabase system In Proc Intl Conf on Very Large Databases, 1992 [98]... 856 Database Management Systems [201] A El Abbadi Adaptive protocols for managing replicated distributed databases

Ngày tải lên: 08/08/2014, 18:22

... Merge logical data models into global Model (optional... step) To merge logical data models into a single global logical data model that represents all user views of a database © Pearson ... data models into global model To merge local logical data model into a single global logical data model This activities in this step include: – Step 2.6.1 Merge local logical data models ... Logical Database Design for the Relational Model Transparencies © Pearson Education Limited 1995, 2005 2 Chapter 16 - Objectives  How to derive a set of relations from a conceptual data model.

Ngày tải lên: 21/10/2014, 23:21

... (EER) Model EER Model  The basic concepts of ER modeling are not powerful enough for some complex applications  The Enhanced ER model is the extension of the original ER model with new modeling ... EER Model  Include all modeling concepts of basic ER  Additional concepts: ◦ Subclasses/superclasses ◦ Specialization/generalization, ◦ Categories, attribute inheritance  Iƒt is used to model ... that are meaningful and need to be represented explicitly because of their significance to the database application  Ex: EMPLOYEE may be further grouped into: ◦ SECRETARY, ENGINEER, TECHNICIAN,

Ngày tải lên: 15/05/2017, 10:33

... Chapter Relational Database Design by ER- and EER-to -Relational Mapping Chapter Outline  ER-to -Relational Mapping Algorithm ◦ ◦ ◦ ◦ ◦ ◦ ◦  Step 1: ... and Relational Models ER Model Entity type 1:1 or 1:N relationship type M:N relationship type n-ary relationship type Simple attribute Composite attribute Multivalued attribute Value set Relational ... the COMPANY ER schema into a relational schema Step 1: Mapping of Regular Entity Types  Example: We create the relations EMPLOYEE, DEPARTMENT, and PROJECT in the relational schema corresponding

Ngày tải lên: 15/05/2017, 10:33

... Normalization for Relational Databases Informal Design Guidelines for Relational Databases Relational database design: The grouping of attributes to form "good" ... with base relations  Criteria for "good" base relations:  ◦ Discuss informal guidelines for good relational design ◦ Discuss formal concepts of functional dependencies and normal forms 1NF 2NF

Ngày tải lên: 15/05/2017, 10:33

... Chapter Entity Relationship Model Introduction Modeling databases using a graphical technique is proposed so that humans can relate to easily  ER Model is based on a perception of a ... relationships among these objects  Overview of Database Design  Conceptual design: (ER Model is used at this stage.)  A database “schema” in the ER Model can be represented pictorially (ER diagrams) ... the database, using a commercial DBMS  By using the DBMS, conceptual design from high-level data model will be transformed into the implementation data model COMPANY example  The COMPANY database

Ngày tải lên: 15/05/2017, 11:13

... with non -relational databases, NoSQL and XML database models, is proposed Non -relational databases have been put forward as a flexible alternative to the traditional relational data models since ... COVID-19 Database Management: A Non -relational Approach … 489 Conventional relational database systems expand their capacity by acquiring more expensive and potent servers, whereas NoSQL database ... a challenge to the database management system currently being used One of the most commonly adopted systems worldwide for clinical data storage is the Relational Database Management System (RDBMS)

Ngày tải lên: 29/03/2021, 16:41

... ERD model: Picture01 ERD model 0 15 Relational model: Picture Relational model 0 16 Create database, table and insert datas: 0 Picture Create database and tables (1) 0 17 0 Picture Create database ... DIAGRAMS, CHARTS AND TABLES Picture ERD model 14 Picture Relational model 15 Picture Create database and tables (1) .16 Picture Create database and tables (2) .17 ... CHAPTER 2: Supermarket database system with ERD model and Relational model, simple queries 10 CHAPTER 3: Using Java to behaving some queries related to SQL and database with maven project

Ngày tải lên: 28/12/2022, 11:00

... Draw ERD model: Picture ERD model 15 Relational model: Picture Relational model 16 Create database, table and insert datas: Picture Create database and tables (1) 17 Picture Create database and ... CHARTS AND TABLES Picture ERD model 14 Picture Relational model 15 Picture Create database and tables (1) 16 Picture Create database and tables (2) ... CHAPTER 2: Supermarket database system with ERD model and Relational model, simple queries 10 CHAPTER 3: Using Java to behaving some queries related to SQL and database with maven project

Ngày tải lên: 29/12/2022, 04:01

... Draw ERD model: Picture01 ERD model Tieu luan 0 Tieu luan 15 Relational model: Picture Relational model 0 Tieu luan 16 Create database, table and insert datas: 0 Tieu luan Picture Create database ... DIAGRAMS, CHARTS AND TABLES Picture ERD model 14 Picture Relational model 15 Picture Create database and tables (1) .16 Picture Create database and tables (2) .17 ... CHAPTER 2: Supermarket database system with ERD model and Relational model, simple queries 10 CHAPTER 3: Using Java to behaving some queries related to SQL and database with maven project

Ngày tải lên: 06/02/2023, 09:20

... Language) là một ngôn ngữ lập trình dùng để quản lý và tương tác với cơ sở dữ liệu quan hệ (Relational Database Management System) SQL được sử dụng để thực hiện các thao tác như truy vấn dữ liệu, cập ... mysql>Select * from students where match(first_name, last_name) AGAINST ('A');Trang 11TỐI ƯU DATABASE SCHEMA- Tối ưu hóa kiểu dữ liệu:- Tránh null value:Ví dụ: khi thiết kế bảng user chỉ chứa

Ngày tải lên: 06/04/2024, 14:38

... Câu truy vấn: ALTER DATABASE AdventureWorks2019 ADD FILEGROUP B1 ALTER DATABASE AdventureWorks2019 ADD FILEGROUP B2 ALTER DATABASE AdventureWorks2019 ADD FILEGROUP B3 ALTER DATABASE AdventureWorks2019 ... Giới thiệu về chủ đề Order management - Quản lý đơn hàng (order management) là việc quản lý các quy trình kinh doanh liên quan đến đơn hàng cho hàng hóa hoặc dịch vụ Order management bắt đầu khi ... vấn: ALTER DATABASE AdventureWorks2019 ADD FILE(NAME=N'A1', FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL15.SQLEXPRESS\MSSQL\DATA\ PartDB_A1.ndf') TO FILEGROUP B1 ALTER DATABASE AdventureWorks2019

Ngày tải lên: 29/05/2024, 18:30

... UNIVERSITY. Project Management GRADUATE SCHOOL OF MANAGEMENT Session 2: Project Scope Management LA TROBE UNIVERSITY – HANOI UNIVERSITY GRADUATE SCHOOL OF MANAGEMENT MBA CLASS 4: Project Management Version ... Project Management GRADUATE SCHOOL OF MANAGEMENT Session 2: Project Scope Management 1. Identifying project LA TROBE UNIVERSITY – HANOI UNIVERSITY GRADUATE SCHOOL OF MANAGEMENT MBA CLASS: Project Management ... IVERSITY. Project Management GRADUATE SCHOOL OF MANAGEMENT Session 2: Project Scope Management LA TROBE UNIVERSITY – HANOI UNIVERSITY GRADUATE SCHOOL OF MANAGEMENT MBA CLASS: Project Management -

Ngày tải lên: 24/12/2013, 12:16

... SCHOOL OF MANAGEMENT MBA CLASS 4: Project Management File: /dohuan/HU/material/risk management. doc 20 Version 2.0 Version 2.0 12 ... SCHOOL OF MANAGEMENT MBA CLASS 4: Project Management ... /dohuan/HU/material/risk management. doc Version 2.0 1 LA TROBE UN IVERSITY – HAN OI UN IVERSITY. Project Management GRADUATE SCHOOL OF MANAGEMENT Session 9: Project Communication Management Project ... – HANOI UNIVERSITY GRADUATE SCHOOL OF MANAGEMENT MBA CLASS 4: Project Management Version 2.0 2 Project communication management • Project communication management includes the processes required

Ngày tải lên: 24/12/2013, 12:16