relational database data model example

Ngày tải lên: 12/05/2014, 11:55

... the relational data model in the general case. XML data is hierarchical and may have a recursive structure; relational databases provide weak support for hierarchical data (modeled as foreign ... 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 model. This yields five tables for people, open ... platform for the XML data model and serves as the basis for interoperability between relational and XML data. Whereas query processing on XML data shredded into one or more relational tables...

Ngày tải lên: 07/03/2014, 14:20

Ngày tải lên: 05/07/2014, 16:20

... Abstract Data Types and Abstract Indices to CAD Data, " Proc. Engineering Applications Stream of Database Week/83, San Jose, Ca., May 1983. [STON85] Stonebraker, M. et. al., "Interfacing a Relational ... commands which include new data types and operators and ways to allow access methods to be used for new data types. 1. INTRODUCTION The collection of built-in data types in a data base system (e.g. ... 1981 ACM-SIGMOD Conference on Management of Data, Ann Arbor, Mich., May 1981. [SELI79] Selinger, P. et. al., "Access Path Selection in a Relational Database Management System," Proc. 1979...

Ngày tải lên: 22/10/2013, 10:15

... Edition or Oracle Database Personal Edition. What is a Data Warehouse? 1-2 Oracle Database Data Warehousing Guide What is a Data Warehouse? A data warehouse is a relational database that is designed ... Oracle Database Enterprise Edition or Oracle Database Personal Edition, and some of these are optional. For example, to create partitioned tables and indexes, you must have the Oracle Database ... Time Levels: Example 21-56 Creating a Custom Member in a Dimension: Example 21-62 22 SQL for Modeling Overview of SQL Modeling 22-2 How Data is Processed in a SQL Model 22-4 Why Use SQL Modeling?...

Ngày tải lên: 22/10/2013, 15:15

... 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 Design and Implementation The ... implement database solutions using SQL Server. I have filled this book with hard-won knowledge and experience that I’ve accumulated through many years of working with relational databases—including ... learn from a database design textbook. Secondly, I will show practi- cal techniques for applying these concepts to build solid SQL Server database solutions. I start with the concepts of relational...

Ngày tải lên: 29/10/2013, 15:15

... high-performance querying and reporting. ã Relational data structures: This chapter will provide concise descriptions of some of the fun- damental database objects, including the database itself, as well as ... four editions of a book 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 ... 2005 Database Design and Optimization (Apress, 2006), and Database Benchmarking: Practical Methods for Oracle & SQL Server (Rampant, 2007). Kevin contributes to SQL Server Magazine and Database...

Ngày tải lên: 29/10/2013, 15:15

... hold, back up, and subsequently restore data when necessary. It does not limit you to accessing data within only that one database; however, managing data in separate databases becomes a mor e manual ... Metadata M etadata is data stored to describe other data. Knowing how to find information about the data stored in your system is very important. Codd’s fourth rule states the following: T he database ... released by the time you are reading this. Relational Data Structures This section introduces the following core relational database structures and concepts: ã Database and schema ã Tables, rows, and...

Ngày tải lên: 08/11/2013, 21:15

... in your database. One thing of interest here is that what might be considered a natural key in your database is often not actually a natural key in the place where it is defined, for example, ... the driver’s license number of a person. In the example database, this is a number that every person has (or may need before inclusion in our database, perhaps). However, the value of the driver’s ... the actors database they add a uniquifier to the name to make it unique. A uniquifier might be some meaningless value added to a column or set of columns to give you a unique key. For example, ...

Ngày tải lên: 08/11/2013, 21:15

... Activity 4.2: Creating a Logical Data Model In this activity, you will use the skills learned in this module to define the relationships within a logical data model and produce a sample ER diagram ... Activity 4.2: Creating a Logical Data Model 19 Exercise 2: Determining Cardinality and Existence In this exercise, you will ... activity, you will be able to: ! Identify relationships between entities. ! Create a logical data model. Before You Begin This activity will take place in small groups with a class discussion...

Ngày tải lên: 21/12/2013, 06:16

... start developing great databases quickly. Recognizing Relational Data Structures is section introduces the following core relational database structures and concepts: Database and schemaã Tables, ... important data in a database designed by someone who didn’t understand the basics of database design? e first five chapters of this book are devoted to the fundamental tasks of relational database ... higher level than the database, which I will introduce in the following section. Introducing Databases and Schemas A database is simply a structured collection of facts or data. It needn’t be in...

Ngày tải lên: 12/02/2014, 12:20

... learning about relational databases in general, and Datascope in particular. Datascope was originally developed for seismic applications and the demo database has seismic data. It contains data recorded ... text for databases is “An Introduction to Database Systems”, by C.J. Date. Start with it if you would like to learn more about relational databases in particular. dbe: a window on a database dbe ... knottiest problems in database management, whether you are using Datascope or any other relational database management system. Because they have no meaning outside the database context, if they...

Ngày tải lên: 20/02/2014, 05:21

... features in Oracle Database: ■ Oracle Database 11g Release 1 (11.1) New Features in Data Warehousing ■ Oracle Database 10g Release 2 (10.2) New Features in Data Warehousing Oracle Database 11g Release ... are described in the Oracle Database SQL Language Reference. ■ OLAP ■ Data Mining Data Mining Data mining uses large quantities of data to create models. These models can provide insights that ... What is a Data Warehouse? 1-2 Oracle Database Data Warehousing Guide ■ Time Variant Subject Oriented Data warehouses are designed to help you analyze data. For example, to learn more...

Ngày tải lên: 07/03/2014, 23:20

... 2011-04-01 14 Amazon Relational Database Service API Reference Response Elements </ResponseMetadata> </CreateDBParameterGroupResponse> API Version 2011-04-01 25 Amazon Relational Database Service ... Relational Database Service API Reference Examples DescriptionName The meaning of this parameter differs according to the database engine you use. MySQL Contains the name of the initial database ... String DBParameterGroupFamily API Version 2011-04-01 23 Amazon Relational Database Service API Reference CreateDBParameterGroup Amazon Relational Database Service API Reference API Version 2011-04-01 ...

Ngày tải lên: 07/03/2014, 23:20

... String Required:Yes EngineVersion The version number of the database engine to use. MySQL Example: 5.1.42 Type: String Oracle Example: 11.2.0.2.v2 API Version 2013-01-10 16 Amazon Relational Database Service API Reference Request ... </ResponseMetadata> </AuthorizeDBSecurityGroupIngressResponse> API Version 2013-01-10 10 Amazon Relational Database Service API Reference Examples Amazon Relational Database Service: API Reference Copyright â 2013 Amazon Web Services, ... </ResponseMetadata> </AddSourceIdentifierToSubscriptionResponse> API Version 2013-01-10 6 Amazon Relational Database Service API Reference Examples Amazon Relational Database Service API Reference API Version 2013-01-10 ...

Ngày tải lên: 07/03/2014, 23:20

... associative relations representing e.g. coreference. 2 The Data Model We propose a stand-off data model implemented in XML. The basedata is stored in a simple XML file 1 The current release version ... token queries exactly one basedata element (i.e. word) or one markable. 3.1 Query Tokens Basedata elements can be queried by matching reg- ular expressions. Each basedata query token con- sists ... of the relations of their basedata elements. While it has become common practice to use the stand-off mechanism to relate several annota- tion levels to one basedata file, it is also not un- common...

Ngày tải lên: 08/03/2014, 04:22

... Change Data Capture Overview of Change Data Capture 16-2 Capturing Change Data Without Change Data Capture 16-2 Capturing Change Data with Change Data Capture 16-4 Publish and Subscribe Model ... is a Data Warehouse? 1-4 Oracle Database Data Warehousing Guide Data warehouses and OLTP systems have very different requirements. Here are some examples of differences between typical data warehouses ... For example, a typical data warehouse query is to retrieve something such as August sales. A summary in an Oracle database is called a materialized view. WarehouseData Sources Summary Data Raw Data Metadata Operational System Operational System Flat...

Ngày tải lên: 17/03/2014, 00:20

Ngày tải lên: 17/03/2014, 00:20

Ngày tải lên: 17/03/2014, 00:20

Ngày tải lên: 17/03/2014, 00:20