Relational database design algorithms and further dependencies

... Outline Designing a Set of Relations Properties of Relational Decompositions Algorithms for Relational Database Schema Multivalued Dependencies and Fourth Normal Form Join Dependencies and Fifth ... } Algorithms for Relational Database Schema Design (5) Issues with null-value joins (a) Some EMPLOYEE tuples have null for the join attribute DNUM Algorithms for Relational Database Schema Design ... values) Algorithms for Relational Database Schema Design (7) Discussion of Normalization Algorithms: Problems:    The database designer must first specify all the relevant functional dependencies...

Relational Database Design Algorithms and Further Dependecies

... of F, such that all their left- and right-hand-side attributes are in Ri 1 Informal Design Guidelines for Relational Databases (1)  What is relational database design? The grouping of attributes ... Outline Designing a Set of Relations Properties of Relational Decompositions Algorithms for Relational Database Schema Multivalued Dependencies and Fourth Normal Form Join Dependencies and Fifth ... applies algorithms that construct a target set of 3NF or BCNF relations  Additional criteria may be needed to ensure the the set of relations in a relational database are satisfactory DESIGNING...

Chapter Relational Database Design Algorithms and Further Dependecies

... } Algorithms for Relational Database Schema Design (5) Issues with null-value joins (a) Some EMPLOYEE tuples have null for the join attribute DNUM Algorithms for Relational Database Schema Design ... Chapter Outline Designing a Set of Relations Properties of Relational Decompositions Algorithms for Relational Database Schema Multivalued Dependencies and Fourth Normal Form ... tuples for which DNUM has null values) Algorithms for Relational Database Schema Design (7) Discussion of Normalization Algorithms: Problems:    The database designer must first specify all the...

Apress - Pro SQL Server 2008 Relational Database Design and Implementation (2008)01

... Page i Pro SQL Server 2008 Relational Database Design and Implementation Louis Davidson With Kevin Kline, Scott Klein, and Kurt Windisch 8662FM.qxp 7/28/08 6:19 PM Page ii Pro SQL Server 2008 Relational ... prior written permission of the copyright owner and the publisher ISBN-13 (pbk): 97 8-1 -4 30 2-0 86 6-2 ISBN-13 (electronic): 97 8-1 -4 30 2-0 86 7-9 Printed and bound in the United States of America Trademarked ... 94705 Phone 51 0-5 4 9-5 930, fax 51 0-5 4 9-5 939, e-mail info @apress. com, or visit http://www .apress. com Apress and friends of ED books may be purchased in bulk for academic, corporate, or promotional...

Apress - Pro SQL Server 2008 Relational Database Design and Implementation (2008)02

... on database design Louis’s primary areas of interest are database architecture and coding in T -SQL, and he has experience designing many databases and writing thousands of stored procedures and ... books including SQL in a Nutshell (O’Reilly, 2004), Pro SQL Server 2005 Database Design and Optimization (Apress, 2006), and Database Benchmarking: Practical Methods for Oracle & SQL Server (Rampant, ... (Rampant, 2007) Kevin contributes to SQL Server Magazine and Database Trends and Applications and blogs at SQLBlog.com and SQLMag.com Kevin is also a top-rated speaker at conferences worldwide,...

Apress - Pro SQL Server 2008 Relational Database Design and Implementation (2008)03

... make up the table In SQL Server and most databases—it is common to consider the catalog as a collective description of the tables and other structures in the database SQL Server exposes the heading ... would probably require some sort of workflow process to route the request to a manager for approval T -SQL code is not interactive, and this rule would most certainly be enforced outside the database, ... constraints, writing triggers, and so on, to implement the logical model in the most efficient manner This is where platform-specific knowledge of SQL Server, T -SQL, and other technologies becomes...

Apress - Pro SQL Server 2008 Relational Database Design and Implementation (2008)04

... of product (LCD television) • JV: Subtype of product (32-inch console) 19 8662Ch01.qxp 20 7/28/08 3:37 PM Page 20 CHAPTER s INTRODUCTION TO DATABASE CONCEPTS • 1023: Lot that the product was produced ... well, or it is not a proper table Consider the earlier example of a product identifier consisting of seven parts: • X: Type of product (LCD television) • JV: Subtype of product (32-inch console) • ... product was produced in (the 1023rd batch produced) • 293: Day of year • 9: Last digit of year • 2: Color • 000123: Order of production The simple-to-use smart key values serve an important purpose...

Relational Database Design and Implementation for Biodiversity Informatics docx

... the conceptual and logical design of a database, physical design, implementation of the database design, implementation of the user interface for the database, and some issues for the migration ... involved, errors and inconsistencies will begin to creep into a poorly designed database Thinking about database design is useful for both building better database systems and for understanding some ... simpler design that focuses on the most important information This is not to say that database design is not important Good database design is vitally important for stewardship of biodiversity information...

66
1,355
0

microsoft access a primer for relational database design and use

... Summary MS -Access is a powerful relational database program It has many integrated features and can be greatly customized to fit most personal/departmental needs for data collection and storage ... Microsoft Access – Module An Overview of MS -Access PA Harris, Vanderbilt University What is Microsoft Access? Microsoft Access is a relational database management system (DBMS or RDBMS) At ... II type grants) PA Harris, Vanderbilt University What is in an MS -Access file - 1? Although the term database typically refers to a collection of related data tables, an Access database includes...

Relational Database Design

... The ER conceptual schema diagram for the COMPANY database FIGURE 7.2 Result of mapping the COMPANY ER schema into a relational schema ER-to -Relational Mapping Algorithm (cont)  Step 2: Mapping ... relationship type WORKS_ON from the ER diagram is mapped by creating a relation WORKS_ON in the relational database schema The primary keys of the PROJECT and EMPLOYEE relations are included as foreign ... Figure 7.7 shows an ER schema for a database that may be used to keep track of transport ships and their locations for maritime authorities Map this schema into a relational schema, and specify all...

Relational Database Management Systems, Database Design, and GIS pptx

... used to manipulate relational databases The Relational Database Concept • Proposed by Dr Codd in 1970 • The basis for the relational database management system (RDBMS) • The relational model contains ... defined and established in an ad-hoc manner ~ Croswell, 1991 Relational Database Management System - a database system made up of files with data elements in two-dimensional array (rows and columns) ... metadata on the GIS database • Metadata is descriptive information about the data • What is the data source? How accurate is it? • Manipulate, update and expand the database • Administer the database...

Database Design and Implementation with SQL Server 2000

...

Tài liệu overview of data modeling and database design pptx

... meeting each of these challenges through good database design, you improve the performance of your database Overview of Data Modeling and Database Design 8Ć5 8Ć6 Introduction to Oracle: SQL and PL/SQL ... refine the system Overview of Data Modeling and Database Design 8Ć7 8Ć8 Introduction to Oracle: SQL and PL/SQL Using Procedure Builder Database Design Designing a relational database system involves ... constraints For more information, see Develop Complex Data Models and Design Databases course description Overview of Data Modeling and Database Design 8Ć29 Map entities to tables Map attributes...

Tài liệu overview of data modeling and database design pdf

... S_ORD Table Overview of Data Modeling and Database Design 8Ć27 8Ć28 Introduction to Oracle: SQL and PL/SQL Using Procedure Builder Designing the Database The database design stage produces design ... refine the system Overview of Data Modeling and Database Design 8Ć7 8Ć8 Introduction to Oracle: SQL and PL/SQL Using Procedure Builder Database Design Designing a relational database system involves ... challenges through good database design, you improve the performance of your database Overview of Data Modeling and Database Design 8Ć5 8Ć6 Introduction to Oracle: SQL and PL/SQL Using Procedure...

Xem thêm