relational database design in dbms pdf

... 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 Database Design ... New York, Inc., 233 Spring Street, 6th Floor, New York, NY 10013 Phone 1-800-SPRINGER, fax 201-348-4505, e-mail orders-ny@springer-sbm.com, or visit http://www.springeronline.com For information ... Broccoli Information Management Artist: Kinetic Publishing Services, LLC Cover Designer: Kurt Krames Manufacturing Director: Tom Debolski Distributed to the book trade worldwide by Springer-Verlag...

Ngày tải lên: 29/10/2013, 15:15

... challenging things about doing database design right: 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 great mentors, but as I wanted to progress, I started looking for material on database design, ... Chapter 12: Database Interoperability: Finally, in this chapter written by Kevin Kline, the challenges of building databases that have to run on not only SQL Server but also other database server...

Ngày tải lên: 29/10/2013, 15:15

... 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 ... values in tables This rule is known as the Information Principle (or Information Rule) It means that there is only one way to access data in a relational database, and that is by comparing values in ... 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 maximum is theoretically infinity...

Ngày tải lên: 08/11/2013, 21:15

... following: NULL values (distinct from empty character string or a string of blank characters or zero) are supported in the RDBMS for representing missing information in a systematic way, independent ... happening soon!) s Tip We tend to think of names in most systems as a kind of semiunique natural key This isn’t good enough for identifying a single row, but it’s great for a human to find a ... essential thing for us during the logical design phase is to find all the bits of information that make up the smart keys because each of these values is likely going to need to be stored in its own...

Ngày tải lên: 08/11/2013, 21:15

... before designing a database Chapters is an exercise in learning how a database is put together using scripts, and the rest of the book is taking topics of design and implementation and providing instruction ... Study In this chapter, we will walk through the entire process of taking a normalized model and translating it into a working database This is the first point in the database design process in which ... (distinct from empty character string or a string of blank characters and distinct from zero or any other number) are supported in the fully relational RDBMS for representing missing information in...

Ngày tải lên: 12/02/2014, 12:20

... 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 ... 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 of the problems that exist in legacy ... redundant information Atomization means placing only one instance of a single concept in a single field in the database Reduction of redundant information means organizing a database so that a single...

Ngày tải lên: 23/03/2014, 16:20

... Outline  ER-to -Relational Mapping Algorithm Step 1: Mapping of Regular Entity Types Step 2: Mapping of Weak Entity Types Step 3: Mapping of Binary 1:1 Relation Types Step 4: Mapping of Binary ... 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 of Weak Entity Types ... the partial key of DEPENDENT ER-to -Relational Mapping Algorithm (cont)  Step 3: Mapping of Binary 1:1 Relation Types For each binary 1:1 relationship type R in the ER schema, identify the relations...

Ngày tải lên: 12/05/2014, 11:55

... 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 to form "good" relation ...  Design is concerned mainly with base relations  What are the criteria for "good" base relations? Informal Design Guidelines for Relational Databases (2)  We first discuss informal guidelines ... Tuples  Bad designs for a relational database may result in erroneous results for certain JOIN operations  The "lossless join" property is used to guarantee meaningful results for join operations...

Ngày tải lên: 12/05/2014, 11:55

... X 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 all ... Algorithm 11.2 is in 3NF Algorithms for Relational Database Schema Design (2) Algorithm 11.3: Relational Decomposition into BCNF with Lossless (non-additive) join property Input: A universal ... the join attributes Algorithms for Relational Database Schema Design (3) Algorithm 11.4 Relational Synthesis into 3NF with Dependency Preservation and Lossless (Non-Additive) Join Property Input:...

Ngày tải lên: 12/05/2014, 11:55

... Module Creating / Working with Tables PA Harris, Vanderbilt University Tables – Glucose Measurement Database We wish to construct a database to track waking glucose measurements for an indefinite amount ... Language) is a very widely used database language designed specifically for communicating with databases ♦ SQL is not proprietary – almost every DBMS supports SQL (including MS-Access) ♦ SQL is relatively ... 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 words, you can design your application...

Ngày tải lên: 24/10/2014, 15:10

... X 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 all ... Algorithm 11.2 is in 3NF Algorithms for Relational Database Schema Design (2) Algorithm 11.3: Relational Decomposition into BCNF with Lossless (non-additive) join property Input: A universal ... null-value joins (a) Some EMPLOYEE tuples have null for the join attribute DNUM Algorithms for Relational Database Schema Design (5) Issues with null-value joins (b) Result of applying NATURAL JOIN to...

Ngày tải lên: 04/12/2015, 00:22

... described in [ONG84] Our initial experience with the system is that dynamic linking is not preferable to static linking One problem is that initial loading of routines is slow Also, the ADT routines ... an installation wants at the time the DBMS is installed In this case, all routines could be linked into the run time system at system installation time by the linker provided by the operating ... number of index keys in an index number of pages in the index the constant appearing in: rel-name.field-name OPR value the maximum value in the key range if known the minimum value in the key...

Ngày tải lên: 22/10/2013, 10:15

... 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 ... 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 specifications for a relational ... indicating “must be.” Crow’s foot Degree element indicating “one or more.” Single line Degree element indicating “one and only one.” Overview of Data Modeling and Database Design 8Ć17 8Ć18 Introduction...

Ngày tải lên: 21/12/2013, 06:17

Ngày tải lên: 15/02/2014, 07:20

... tables in Tdesignmight also change In addition, the designer may require certain index choices for tables in Tdesign For example, the clustered index for some table may already have been chosen Indices ... over j Zero-domination is identical to domination ((DEFl)), so index elimination is the same as index elimination with E = c-domination might be defined in other ways (e.g., by comparing total advantages ... solutions that contain one or more indices that are never taken as access paths In the index-elimination phase, we ensure that no index is dominated by any other single index; in solution generation...

Ngày tải lên: 20/02/2014, 05:21

... adds a JOIN in case of wildcard and //-axis queries Conclusions This paper introduces techniques for indexing XML instances stored in a relational database in an undecomposed form It introduces ... or the “Infoset” table We generate a subset of the fields in the Infoset items of the XML nodes by shredding an XML instance This is stored in a B+tree in the system The Infoset contains information ... 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

... Endpoint Specifies the connection endpoint Type: Endpoint (p 201) Engine Provides the name of the database engine to be used for this DB Instance Type: String EngineVersion Indicates the database ... connection endpoint Type: Endpoint (p 201) Engine Provides the name of the database engine to be used for this DB Instance Type: String EngineVersion Indicates the database engine version API ... state of this database Type: String DBName The meaning of this parameter differs according to the database engine you use MySQL Contains the name of the initial database of this instance that...

Ngày tải lên: 07/03/2014, 23:20

... (ARC/INFO, ESRI ShapeFile) • Overview of GIS Database Design • Continuous, non-tiled, spatial database for adding spatial data to a relational database management system (RDBMS) • Database interface ... 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 the ... data Design Business Information Requirements Strategy Analysis Conceptual Data Modeling Entity-Relationship Data Model Entity Definitions Database Design Build Design Database Build Table Definitions...

Ngày tải lên: 17/03/2014, 00:20

... 167 11 Creating Links 169 Simple Hypertext Links Linking Within a Document Targeting Windows Alternative Protocols Linking Documents with link 169 171 ... (Macintosh) 2000 Macintosh Tasman Netscape Navigator 2002 Windows, Macintosh, Linux, Unix Gecko Netscape Navigator 1997 Windows, Linux, Macintosh, Unix N/A Firefox 1.0 Windows, Linux, Macintosh, ... Microsoft in the Browser War Entwined in the operating system of every PC running the Windows operating system, Internet Explorer was a formidable foe Netscape lost important ground by releasing bloated...

Ngày tải lên: 22/03/2014, 17:20

... Eliminating Redundant Data 185 Entity Relationship Modeling 209 10 Modeling Business Processes 235 PART III Designing the Database 11 Designing Tables 259 12 Integrating Business Rules and Data Integrity ... Overview of Database Design IN THIS PART Chapter 1, “Understanding Database Fundamentals,” begins by defining a database and explaining database- related concepts Terminology is briefly covered in this ... Sample Physical Database Implementation 447 B Popular Database Design Tools C Database Design Checklists 465 Planning Database Design 466 Gathering Information to Design the Database ...

Ngày tải lên: 30/03/2014, 22:20