relational database design in dbms ppt

... Trang 1Relational Database Design by ER- and EERR-to-Relational Mapping Trang 2Chapter OutlineStep 1: Mapping of Regular Entity Types Step 2: Mapping of Weak Entity Types Step 3: Mapping of Binary ... for the COMPANY database. Trang 5FIGURE 7.2Result of mapping the COMPANY ER schema into a relational schema. Trang 6ER-to-Relational Mapping Algorithm (cont)  Step 2: Mapping of Weak Entity ... Relation Types Step 4: Mapping of Binary 1:N Relationship Types. Step 5: Mapping of Binary M:N Relationship Types. Step 6: Mapping of Multivalued attributes. Step 7: Mapping of N-ary Relationship

Ngày tải lên: 12/05/2014, 11:55

... 1Chapter Relational Database Design Algorithms and Further Dependencies Trang 2Chapter Outline0 Designing a Set of Relations 1 Properties of Relational Decompositions 2 Algorithms for Relational Database ... Y in F {for all rows in S which have the same symbols in the columns corresponding to attributes in X {make the symbols in each column that correspond to an attribute in Y be the same in ... Algorithm 11.2 is in 3NF Trang 17Algorithms for Relational Database Schema Design (2) Algorithm 11.3: Relational Decomposition into BCNF with Lossless (non-additive) join property Input: A universal

Ngày tải lên: 12/05/2014, 11:55

... Working with Tables Trang 13Tables – Glucose Measurement Database We wish to construct a database to track waking glucose measurements for an indefinite amount of time on 100 patients receiving ... directly into a table, you can enhance data quality by forcing data entry through forms. Depending upon your users, you may wish to set things up so they never even see the database window In other ... Microsoft Access?Microsoft Access is a relational database management system (DBMS or RDBMS) At the very core, it is a software “engine” that provides an interface between physical data and user

Ngày tải lên: 24/10/2014, 15:10

... Types of Business Direction Information In this practice, you gain experience in identifying the types of business direction information Read through each of the following notes and mark in the table ... frames in individual cases Oracle Data Modeling Relational Design prohibited and is in Development Program (WDP) eKit materials are provided and for WDP in-class use Database only Copying eKit ... Your Relational Model 49 Oracle Data Modeling Relational Design prohibited and is in Development Program (WDP) eKit materials are provided and for WDP in-class use Database only Copying

Ngày tải lên: 25/11/2016, 19:12

... IsNull(generic)). Maintaining integrity In a spreadsheet or a flat file database, deleting a record is a simple matter of removing a single row In a relational database, removing records and changing the links ... in the database Implementation of a database from an information model involves converting that conceptual design into a physical design, into a plan for actually implementing the database in ... Design (Conceptual database design, leading to information model, physical database design [including system architecture], user interface design) 3 Implement (Database implementation, user interface

Ngày tải lên: 23/03/2014, 16:20

... Modeling Trang 13Using Import 20-4 Importing an Existing Database 20-6 Importing Domains 20-11 Quiz 20-12 Creating a Logical Data Model from Your Relational Model 20-13 Reviewing and Making Changes ... 20-14 Checking Design Rules 20-15 Forward Engineering to a New Relational Model 20-16 Comparing Your Relational Model Changes with What Is in the Database 20-18 Mapping to an Existing Column ... 18-3 Creating a Physical Model 18-4 RDBMS Administration 18-5 RDBMS Administration: Changing the Default RDBMS Sites 18-6 Creating Physical Model Objects 18-7 Adding a User 18-9 Adding Segment

Ngày tải lên: 25/11/2016, 19:12

... resetting their chosen partitioning attributes in the current best design The partitioning option for a relaxed table is undefined in the design, and thus the design is incomplete We discuss how to ... new database design, even if certain design choices that mitigate skew cause some transactions to be no longer singled-partitioned Existing tech-niques have focused on static skew in the database ... generating either the initial design in Step 1 or subsequent Trang 5Figure 5: An overview of Horticulture’s LNS design algorithm.The algorithm generates a relaxed design from the initial design

Ngày tải lên: 07/03/2014, 14:20

... for indexing XML data in the upcoming version of Microsoft® SQL Server™, and how it ties into the relational framework for query processing 1 Introduction Introducing XML [3] support in relational ... adds a JOIN in case of wildcard and //-axis queries 6 Conclusions This paper introduces techniques for indexing XML instances stored in a relational database in an undecomposed form It introduces ... of XMark Instead of storing the entire data as a single, large XML instance, it is more natural in a relational database to store the data in tables representing the different entities in the data

Ngày tải lên: 07/03/2014, 14:20

... (ARC/INFO, ESRI ShapeFile) • Overview of GIS Database Design Trang 5• Continuous, non-tiled, spatial database for adding spatial data to a relational database management system (RDBMS) • Database ... Trang 1Relational Database Management Systems, Database Design, and GIS Trang 2Overview of GIS Database Designcomprised of several elements, including • Select hardware and software • Train their ... RequirementsConceptual Data Modeling Database Build Database Design Entity-Relationship Data Model Entity Definitions Table Definitions Index, View, Cluster, and Space Definitions Strategy Analysis Design Build

Ngày tải lên: 17/03/2014, 00:20

... to investigate further the concept of uncertainty in engineering design analysis Trang 3a) The Concept of Uncertainty in Engineering Design AnalysisIntroducing the concept of uncertainty in reliability ... qualitatively modelling uncertainty in engineering design 3.3.2.4 Overview of Fuziness in Engineering Design Analysis In the real world there exists knowledge that is vague, uncertain, ambiguous or ... sources during the design process: • Archived experience • Engineering analysis (such as FMEA and FMECA) • Modelling and simulation. Interpolating or extrapolating from information on similar design

Ngày tải lên: 02/07/2014, 10:20

... undergoingconfiguration change dur- ing the engineering design process, new information continually becomes available at various stages of the process. Design changes may include adding, replacing ... replacing or eliminating processes and/or components in the light of new engineering judgment. 3.3 Analytic Development of Reliability and Performance in Engineering Design 235 Incorporating these changes ... computer modelling in engineering design veri- fication; • determination of the feasibility of a practical application of intelligent computer automated methodology in engineering design reviews

Ngày tải lên: 02/07/2014, 10:20

... availability and main-tainability evaluation in determining the integrity of engineering design during the detail design phase are: i The application of systems engineering in engineering design, particularly ... as: • Design problems are highly inter-disciplinary: systems engineering in engineer-ing design typically involves a spectrum of conventional engineerengineer-ing and science disciplines • Design ... engineering are found within the other engineer-ing disciplines However, systems engineerengineer-ing is qualitatively different Systems engineering differs from the basic engineering disciplines

Ngày tải lên: 02/07/2014, 10:20

... basics of database design? e first five chapters of this book are devoted to the fundamental tasks of relational database design and preparing your mind for the task at hand: designing databases. ... a single instance of NULL may exist. In Chapter 7, we will discuss implementation patterns for implementing uniqueness conditions of several types in more detail during design, and again in ... logic, including joins. is paper was pretty much the database declaration of storage independence. Moving six years in the future, after companies began to implement supposed relational database...

Ngày tải lên: 12/02/2014, 12:20

... Server 2008 for Developers Beginning SQL Queries Beginning Database Design Pro SQL Server 2008 Relational Database Design and Implementation www.apress.com SOURCE CODE ONLINE Companion eBook See ... Database Design and Optimization Pro SQL Server 2000 Database Design US $59.99 Shelve in Databases/SQL Server User level: Intermediate–Advanced Davidson Pro SQL Server 2008 Relational Database ... working with relational databases—including nearly every version of SQL Server. My first goal in writing this book is to explain many of the important concepts you need to learn from a database...

Ngày tải lên: 29/10/2013, 15:15

... challenging things about doing database design r ight: it takes more time than not doing it (this is a battle that can occur frequently in project planning meetings). Because there’s nothing visual ... thing in the first place.” When I was first getting started designing databases, I learned from a few gr eat mentors , but as I wanted to progress, I started looking for material on database design, ... Implementing the Base Table Structures: This is the first point in the database design pr ocess in which w e fir e up SQL Server and start building scripts to build database objects. In this chapter ,...

Ngày tải lên: 29/10/2013, 15:15

... being used (in our case, an RDBMS, namely, SQL Server). This involves choosing datatypes, building tables, applying constr aints , writing triggers, and so on, to implement the logical model in ... occurring (such as a row number or the exact location in the physical storage medium). However, this sort of physical thinking has no place in relational database design. In summary, a key defines ... address ã 30CharacterString: A string of characters that can be no longer than 30 characters Keep in mind that if you actually define the domain of a string to any positive integer, the maxi- mum is theoretically infinity....

Ngày tải lên: 08/11/2013, 21:15