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	<title>Data Analysts, Crystal Reports and Sql Reporting Services Consultants &#187; Sql Server 2008</title>
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	<link>http://datamart.org</link>
	<description>Feel free to ask tough questions relating to Crystal Reports / SQL Reporting Services / SQL  and get answers from Collective intelligence</description>
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		<item>
		<title>Examples Use string concatenation</title>
		<link>http://datamart.org/2010/09/18/examples-use-string-concatenation/</link>
		<comments>http://datamart.org/2010/09/18/examples-use-string-concatenation/#comments</comments>
		<pubDate>Sun, 19 Sep 2010 00:14:21 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[SQL Server 2000]]></category>
		<category><![CDATA[Sql Server 2005]]></category>
		<category><![CDATA[Sql Server 2008]]></category>

		<guid isPermaLink="false">http://datamart.org/?p=1337</guid>
		<description><![CDATA[Recently I was trying to import datafeeds into the wordpress blog. images on the post and links needs some html tags. I used SQL language string concatenation operator to fill up the missing tags as follows; select  [name], &#8216;&#60;img src=&#8221;&#8216; + &#8221; +IMAGEURL + &#8216;&#8221;&#8216; + &#8216; Detail: &#8216; + [description]+ &#8216;, &#8216;+ &#8216;Price in [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://datamart.org/wp-content/uploads/2010/09/query.SQL_view.jpg"><img class="alignnone size-medium wp-image-1338" title="query.SQL_view" src="http://datamart.org/wp-content/uploads/2010/09/query.SQL_view-300x143.jpg" alt="" width="300" height="143" /></a>Recently I was trying to import datafeeds into the wordpress blog. images on the post and links needs some html tags. I used SQL language string concatenation operator to fill up the missing tags as follows;</p>
<p>select  [name], &#8216;&lt;img src=&#8221;&#8216; + &#8221; +IMAGEURL + &#8216;&#8221;&#8216; + &#8216; Detail: &#8216; + [description]+ &#8216;, &#8216;+ &#8216;Price in USD:&#8217;+ &#8216;, &#8216;+ cast(PRICE as CHAR)+ &#8216;, &#8216;+ &#8216;&lt;a href=&#8221;&#8216; + &#8221; +BUYURL +  &#8216;&#8221;&gt;[Read More and Booking information] &lt;/a&gt;&#8217;</p>
<p>,  KEYWORDS from</p>
<p> dbo.['Hotels_com-International_Hotels$']</p>
<p> where KEYWORDS like &#8216;%doha%&#8217; or</p>
<p> KEYWORDS like &#8216;%Manama%&#8217; or</p>
<p> KEYWORDS like &#8216;%Mumbai%&#8217; or</p>
<p> KEYWORDS like &#8216;%Tokyo%&#8217; or</p>
<p> KEYWORDS like &#8216;%Dubai%&#8217; or</p>
<p> KEYWORDS like &#8216;%Dallas%&#8217; or</p>
<p> KEYWORDS like &#8216;%Houston%&#8217; or</p>
<p> KEYWORDS like &#8216;%Chicago%&#8217; or</p>
<p> KEYWORDS like &#8216;%NYC%&#8217;  or</p>
<p> KEYWORDS like &#8216;%toronto%&#8217;</p>
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		</item>
		<item>
		<title>Modifying table using SQL Server Management Studio in SQL Server 2008</title>
		<link>http://datamart.org/2010/09/18/modifying-table-using-sql-server-management-studio-in-sql-server-2008/</link>
		<comments>http://datamart.org/2010/09/18/modifying-table-using-sql-server-management-studio-in-sql-server-2008/#comments</comments>
		<pubDate>Sat, 18 Sep 2010 22:14:58 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Sql Server 2008]]></category>

		<guid isPermaLink="false">http://datamart.org/?p=1333</guid>
		<description><![CDATA[Modifying table using SQL Server Management Studio 2008. In the Tools &#8211; Options menu, select the Designers node, and under Table options, uncheck &#8220;Prevent saving changes that require the table to be re-created&#8221;.]]></description>
			<content:encoded><![CDATA[<p><a href="http://datamart.org/wp-content/uploads/2010/09/microsoft-sql-server-2008-logo.jpg"><img src="http://datamart.org/wp-content/uploads/2010/09/microsoft-sql-server-2008-logo-300x202.jpg" alt="" title="microsoft-sql-server-2008-logo" width="300" height="202" class="alignnone size-medium wp-image-1334" /></a>Modifying table using SQL Server Management Studio 2008. In the Tools &#8211; Options menu, select the Designers node, and under Table options, uncheck &#8220;Prevent saving changes that require the table to be re-created&#8221;.</p>
]]></content:encoded>
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		</item>
		<item>
		<title>Using Common Table Expressions</title>
		<link>http://datamart.org/2010/06/11/using-common-table-expressions/</link>
		<comments>http://datamart.org/2010/06/11/using-common-table-expressions/#comments</comments>
		<pubDate>Fri, 11 Jun 2010 16:33:55 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Sql Server 2008]]></category>

		<guid isPermaLink="false">http://datamart.org/?p=1315</guid>
		<description><![CDATA[A CTE is similar to a derived table in that it is not stored as an object and lasts only for the duration of the query. Unlike a derived table, a CTE can be self-referencing and can be referenced multiple times in the same query.[1] A CTE can be used to: * Create a recursive [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://datamart.org/wp-content/uploads/2010/06/microsoft-sql-server-2008-logo2.jpg"><img src="http://datamart.org/wp-content/uploads/2010/06/microsoft-sql-server-2008-logo2-300x202.jpg" alt="" title="microsoft-sql-server-2008-logo" width="300" height="202" class="alignnone size-medium wp-image-1316" /></a>A CTE is similar to a derived table in that it is not stored as an object and lasts only for the duration of the query. Unlike a derived table, a CTE can be self-referencing and can be referenced multiple times in the same query.[1]</p>
<p>A CTE can be used to:</p>
<p>*</p>
<p>Create a recursive query. For more information, see Recursive Queries Using Common Table Expressions.<br />
*</p>
<p>Substitute for a view when the general use of a view is not required; that is, you do not have to store the definition in metadata.<br />
*</p>
<p>Enable grouping by a column that is derived from a scalar subselect, or a function that is either not deterministic or has external access.<br />
*</p>
<p>Reference the resulting table multiple times in the same statement.</p>
<p>Using a CTE offers the advantages of improved readability and ease in maintenance of complex queries. The query can be divided into separate, simple, logical building blocks. These simple blocks can then be used to build more complex, interim CTEs until the final result set is generated.</p>
<p>CTEs can be defined in user-defined routines, such as functions, stored procedures, triggers, or views.</p>
<h3>Example</h3>
<div>
<p>The following example shows the components of the CTE structure: expression name, column list, and query. The CTE expression Sales_CTE has three columns (SalesPersonID, SalesOrderID, and OrderDate) and is defined as the total number of sales orders per year for each salesperson.</p>
<div id="snippetGroup">
<div><a name="CodeSpippet0"></a></p>
<div>
<div>
<div>USE AdventureWorks2008R2;<br />
GO<br />
&#8211; Define the CTE expression name and column list.<br />
WITH Sales_CTE (SalesPersonID, SalesOrderID, SalesYear)<br />
AS<br />
&#8211; Define the CTE query.<br />
(<br />
    SELECT SalesPersonID, SalesOrderID, YEAR(OrderDate) AS SalesYear<br />
    FROM Sales.SalesOrderHeader<br />
    WHERE SalesPersonID IS NOT NULL<br />
)<br />
&#8211; Define the outer query referencing the CTE name.<br />
SELECT SalesPersonID, COUNT(SalesOrderID) AS TotalSales, SalesYear<br />
FROM Sales_CTE<br />
GROUP BY SalesYear, SalesPersonID<br />
ORDER BY SalesPersonID, SalesYear;<br />
GO</p>
</div>
</div>
</div>
</div>
</div>
<p>Here is a partial result set:</p>
<p>SalesPersonID TotalSales  SalesYear</p>
<p>&#8212;&#8212;&#8212;&#8212;- &#8212;&#8212;&#8212;&#8211; &#8212;&#8212;&#8212;&#8211;</p>
<p>274           4           2001</p>
<p>274           20          2002</p>
<p>274           14          2003</p>
<p>274           10          2004</p>
<p>275           56          2001</p>
<p>275           139         2002</p>
<p>275           169         2003</p>
<p><a href="http://msdn.microsoft.com/en-us/library/ms190766.aspx">Source: MSDN Microsoft</a></p>
</div>
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		<item>
		<title>OUTPUT Clause (Transact-SQL)</title>
		<link>http://datamart.org/2010/06/10/output-clause-transact-sql/</link>
		<comments>http://datamart.org/2010/06/10/output-clause-transact-sql/#comments</comments>
		<pubDate>Fri, 11 Jun 2010 04:36:34 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Sql Server 2008]]></category>

		<guid isPermaLink="false">http://datamart.org/?p=1311</guid>
		<description><![CDATA[Returns information from, or expressions based on, each row affected by an INSERT, UPDATE, DELETE, or MERGE statement. These results can be returned to the processing application for use in such things as confirmation messages, archiving, and other such application requirements. The results can also be inserted into a table or table variable. Additionally, you [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://datamart.org/wp-content/uploads/2010/06/transactsql.gif"><img src="http://datamart.org/wp-content/uploads/2010/06/transactsql-300x237.gif" alt="" title="transactsql" width="300" height="237" class="alignnone size-medium wp-image-1312" /></a>Returns information from, or expressions based on, each row affected by an INSERT, UPDATE, DELETE, or MERGE statement. These results can be returned to the processing application for use in such things as confirmation messages, archiving, and other such application requirements. The results can also be inserted into a table or table variable. Additionally, you can capture the results of an OUTPUT clause in a nested INSERT, UPDATE, DELETE, or MERGE statement, and insert those results into a target table or view. [1]</p>
<p>Example:</p>
<p>Five rows have to be inserted into the dbo.Products table. After<br />
this, ProductID has to be returned for each of the rows. Following Transact-SQL batch,<br />
can be used;</p>
<p>INSERT into dbo.Products(ProductName)OUTPUT inserted.ProductID,<br />
inserted.ProductName VALUES (&#8216;ProductOne&#8217;),(&#8216;ProductTwo&#8217;),(&#8216;ProductThree&#8217;),(&#8216;ProductFour&#8217;),(&#8216;ProductFive&#8217;);</p>
<p>Source: <a href="http://technet.microsoft.com/en-us/library/ms177564.aspx">Technet.Microsoft.com </a>[1]</p>
]]></content:encoded>
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		<title>FREETEXT (Transact-SQL)</title>
		<link>http://datamart.org/2010/06/08/freetext-transact-sql/</link>
		<comments>http://datamart.org/2010/06/08/freetext-transact-sql/#comments</comments>
		<pubDate>Tue, 08 Jun 2010 18:44:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Sql Server 2008]]></category>

		<guid isPermaLink="false">http://datamart.org/?p=1292</guid>
		<description><![CDATA[Can computer really understand what you want rather than simply give you what you asked it for?This post is to show the functionality of the FREETEXT (Transact-SQL) in Sql Sever; The FreeText predicate attempts to do just that – understand the meaning of a phrase or sentence. It does this by breaking a phrase into [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://datamart.org/wp-content/uploads/2010/06/diagram-sql2008-lg1.gif"><img src="http://datamart.org/wp-content/uploads/2010/06/diagram-sql2008-lg1-300x278.gif" alt="" title="diagram-sql2008-lg" width="300" height="278" class="alignnone size-medium wp-image-1299" /></a>Can computer really understand what you want rather than simply give you what you asked it for?This post is to show the functionality of the FREETEXT (Transact-SQL) in Sql Sever;</p>
<p>The FreeText predicate attempts to do just that – understand the meaning of a phrase or sentence. It does this by breaking a phrase into individual words and then using the full-text indexing thesaurus to match all forms of these words, applying language rules. It may choose to return text that only contains forms of some of these words. As each row is considered for selection, an algorithm the calculates a relative ranking value, used to qualify each record against that matching phrase.[1]</p>
<p>Is a predicate used in a WHERE clause to search columns containing character-based data types for values that match the meaning and not just the exact wording of the words in the search condition. When FREETEXT is used, the full-text query engine internally performs the following actions on the freetext_string, assigns each term a weight, and then finds the matches.[2]</p>
<p>    *      Separates the string into individual words based on word boundaries (word-breaking).<br />
    *      Generates inflectional forms of the words (stemming).<br />
    *      Identifies a list of expansions or replacements for the terms based on matches in the thesaurus. </p>
<p><a href="http://msdn.microsoft.com/en-us/library/ms176078.aspx">Go to the source</a></p>
<p>Reference 1: Beginning Transact SQL with SQL-Server 2000 and 2005 by Paul Turley and Dan Wood<br />
Reference 2 : MSDN Microsoft</p>
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		<title>Hospital Uses Business Intelligence Solution to Save Time and Gain Insight from Data</title>
		<link>http://datamart.org/2010/05/22/hospital-uses-business-intelligence-solution-to-save-time-and-gain-insight-from-data/</link>
		<comments>http://datamart.org/2010/05/22/hospital-uses-business-intelligence-solution-to-save-time-and-gain-insight-from-data/#comments</comments>
		<pubDate>Sat, 22 May 2010 22:46:10 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Analysis Services]]></category>
		<category><![CDATA[Sql Server 2008]]></category>
		<category><![CDATA[SQL, BI, IT news]]></category>

		<guid isPermaLink="false">http://datamart.org/?p=1111</guid>
		<description><![CDATA[This post is about a case study we read on the topic of Business intelligence and Healthcare. This highlight how critical is to improve and enhance business process management in the face of changing work and business situation. Essentially it has explains the use of Microsoft business intelligence tools and their impact on achieving productivity [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://datamart.org/wp-content/uploads/2010/05/heatlcare-info.jpg"><img src="http://datamart.org/wp-content/uploads/2010/05/heatlcare-info.jpg" alt="" title="heatlcare-info" width="280" height="273" class="alignnone size-full wp-image-1112" /></a>This post is about a case study we read on the topic of Business intelligence and Healthcare. This highlight how critical is to improve and enhance <a href="http://datamart.org/2010/03/18/what-is-process-analysis/">business process management </a>in the face of changing work and business situation. </p>
<p>Essentially it has explains the use of Microsoft business intelligence tools and their impact on achieving productivity at CHOP – Children’s Hospital of Philadelphia. The hospital’s department of Pathology and laboratory medicine collects and analyzes the patient samples in specialized laboratories, needed to improve its data analysis and operational management process.</p>
<p>Since 1999 to until early 2008 the number specimen collected and analyzed has doubled and the hospital has an outdated and inefficient system in place according to Dr. Bryan Wolf, Pathologist-in-Chief, Chair, and Professor of Pathology and Laboratory Medicine at CHOP.  Following issues are noted as follows;</p>
<ul>
<em><strong>Problem Areas</strong></em></ul>
<p>1-	For example, technologists and pathologists used a laboratory-processing computer system from Meditech, which the department had installed in the late 1980s and have the following deficiencies.<br />
2-	Although, the old system was good at collecting the data but limited in turning the data in actionable information to make the organization efficient.<br />
3-	The old system was not able to facilitate data analysis to improving the productivity of the organization.<br />
4-	It was difficult to extract the useful data.<br />
5-	There was a Manual specimen collection process  because many specialized laboratory have been consolidated but  not all employees use the same process which resulted in slow method of specimen reporting information.<br />
6-	 In addition to the above there was no way of checking employee performance and accountability.</p>
<ul>
<em><strong>Critical Success factor </strong></em></ul>
<p>In view of the above it was observed that old system was inefficient because of variations in specimen handling in every step resulting in significant avoidable delay. This deficiency was rooted out from the system by using <a href="http://datamart.org/2010/03/18/what-is-process-analysis/">business process management</a> and business intelligence tools.</p>
<ul>
<em><strong>Solution</strong></em></ul>
<p>After consulting with various vendors the hospital used the services of USC consulting group<br />
A Microsoft Certified Partners. In 2007 UCSG Group helped the COHP install a new integrated management solution based on Microsoft BI Technologies. Because of the new integrated system process of organizing and data distribution was streamlined.</p>
<p>The new solution at COHP named a LINCS &#8211; Lean Information Control System includes the user required enhance analysis and specimen data extraction from old system to SQL Server 2005.  From there technologists and pathologists analyze and  process data using MS Excel 2003 spreadsheet software, Microsoft Visio 2003 and third part tool lean view.</p>
<p><a href="http://www.microsoft.com/casestudies/Case_Study_Detail.aspx?CaseStudyID=4000001805">Read the complete Case study</a></p>
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		<title>Microsoft SQL Server 2008 Express with Advanced Services</title>
		<link>http://datamart.org/2010/05/18/microsoft-sql-server-2008-express-with-advanced-services/</link>
		<comments>http://datamart.org/2010/05/18/microsoft-sql-server-2008-express-with-advanced-services/#comments</comments>
		<pubDate>Wed, 19 May 2010 00:48:35 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Sql Server 2008]]></category>
		<category><![CDATA[SQL, BI, IT news]]></category>

		<guid isPermaLink="false">http://datamart.org/?p=1050</guid>
		<description><![CDATA[Microsoft SQL Server 2008 Express with Advanced Services is a free, easy-to-use version of the SQL Server Express data platform that includes an advanced graphical management tool and powerful features for reporting and advanced text-based searches. This edition provides powerful and reliable data management tools and rich features, data protection, and fast performance. It is [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://datamart.org/wp-content/uploads/2010/05/microsoft-sql-server-2008-logo.jpg"><img src="http://datamart.org/wp-content/uploads/2010/05/microsoft-sql-server-2008-logo-300x202.jpg" alt="" title="microsoft-sql-server-2008-logo" width="300" height="202" class="alignnone size-medium wp-image-1051" /></a>Microsoft SQL Server 2008 Express with Advanced Services is a free, easy-to-use version of the SQL Server Express data platform that includes an advanced graphical management tool and powerful features for reporting and advanced text-based searches. This edition provides powerful and reliable data management tools and rich features, data protection, and fast performance. It is ideal for small server applications and local data stores.</p>
<p>Free to download, free to deploy, and free to redistribute as an embedded part of an application, SQL Server 2008 Express with Advanced Services is the fast and easy way to develop and manage data-driven applications with powerful built-in reporting and full-text search functionality.</p>
<p><a href="http://www.microsoft.com/downloads/details.aspx?familyid=b5d1b8c3-fda5-4508-b0d0-1311d670e336&#038;displaylang=en#Overview">Read more</a></p>
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		<item>
		<title>Tutorial: Creating a Simple ETL Package</title>
		<link>http://datamart.org/2010/05/13/tutorial-creating-a-simple-etl-package/</link>
		<comments>http://datamart.org/2010/05/13/tutorial-creating-a-simple-etl-package/#comments</comments>
		<pubDate>Fri, 14 May 2010 04:23:45 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Integeration Services]]></category>
		<category><![CDATA[Sql Server 2008]]></category>

		<guid isPermaLink="false">http://datamart.org/?p=1011</guid>
		<description><![CDATA[We recently did a hands on experience on using sql server 2008 Integration Services by creating a package. We followed the microsoft tutorial  and found it a very good to get started with Integration Services 2008. We would like  to share it with our reader, so lets enjoy; In this tutorial, you will learn how to use SSIS [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://datamart.org/wp-content/uploads/2010/05/1371_SQLServerIntegrationServices_Example.gif"><img src="http://datamart.org/wp-content/uploads/2010/05/1371_SQLServerIntegrationServices_Example-300x242.gif" alt="" title="1371_SQLServerIntegrationServices_Example" width="300" height="242" class="alignnone size-medium wp-image-1012" /></a>We recently did a hands on experience on using sql server 2008 Integration Services by creating a package. We followed the microsoft tutorial  and found it a very good to get started with Integration Services 2008. We would like  to share it with our reader, so lets enjoy;</p>
<p>In this tutorial, you will learn how to use SSIS Designer to create a simple Microsoft SQL Server Integration Services package. The package that you create takes data from a flat file, reformats the data, and then inserts the reformatted data into a fact table. In following lessons, the package will be expanded to demonstrate looping, package configurations, logging and error flow.</p>
<p>When you install the sample data that the tutorial uses, you also install the completed versions of the packages that you will create in each lesson of the tutorial. By using the completed packages, you can skip ahead and begin the tutorial at a later lesson if you like. If this is your first time working with packages or the new development environment, we recommend that you begin with Lesson1.</p>
<p><a href="http://msdn.microsoft.com/en-us/library/ms169917.aspx">Read More</a></p>
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		<title>Another defination of Star Schema</title>
		<link>http://datamart.org/2010/05/11/another-defination-of-star-schema/</link>
		<comments>http://datamart.org/2010/05/11/another-defination-of-star-schema/#comments</comments>
		<pubDate>Tue, 11 May 2010 23:38:03 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Sql Server 2008]]></category>

		<guid isPermaLink="false">http://datamart.org/?p=978</guid>
		<description><![CDATA[A Star schema is relational database schema used to hold measures and dimensions in a data mart. Measures are stored in a fact table, and dimension is stored in dimension tables&#8221;. [1] Star schema contains fact table which holds the measures and column for each dimension containing foreign keys for a member of that dimension. [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://datamart.org/wp-content/uploads/2010/05/nwinolap.gif"><img src="http://datamart.org/wp-content/uploads/2010/05/nwinolap-300x168.gif" alt="" title="nwinolap" width="300" height="168" class="alignnone size-medium wp-image-985" /></a>A Star schema is <a href="http://datamart.org/2010/05/11/relational-database-management-system/">relational database schema</a> used to hold measures and dimensions in a data mart. Measures are stored in a fact table, and dimension is stored in dimension tables&#8221;. [1]<br />
Star schema contains fact table which holds the measures and column for each dimension containing foreign keys for a member of that dimension. The primary key for table is created by combining all of the foreign key fields. This is known as a <a href="http://datamart.org/2010/05/11/what-is-composite-key/">composite key</a>. [1] </p>
<p>We like the above definition as  it is clearly elaborating that star Schema is also relational database, because this  the point many writers  confused the readers specially the beginners by writing the disadvantages of Relational Database systems, they fail to clearly explain in easy term what is a Star Schema. So according to the following definition Star schema is also RDBMS Schema which have been denormalized from highly normalized OLTP databases.</p>
<p>[1]  Brian Larson delivering Business Intelligence with SQL Server 2008 – page 35 to 37</p>
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		<title>Relational Database Management System</title>
		<link>http://datamart.org/2010/05/11/relational-database-management-system/</link>
		<comments>http://datamart.org/2010/05/11/relational-database-management-system/#comments</comments>
		<pubDate>Tue, 11 May 2010 23:29:44 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Sql Server 2008]]></category>
		<category><![CDATA[SQL, BI, IT news]]></category>

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		<description><![CDATA[Short for relational database management system  and pronounced as separate letters, a type of database management system (DBMS) that stores data in the form of related tables. Relational databases are powerful because they require few assumptions about how data is related or how it will be extracted from the database. As a result, the same [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://datamart.org/wp-content/uploads/2010/05/thumb-FoodMartSalesCubeData.png"><img src="http://datamart.org/wp-content/uploads/2010/05/thumb-FoodMartSalesCubeData-300x196.png" alt="" title="thumb-FoodMartSalesCubeData" width="300" height="196" class="alignnone size-medium wp-image-976" /></a>Short for relational database management system  and pronounced as separate letters, a type of database management system (DBMS) that stores data in the form of related tables. Relational databases are powerful because they require few assumptions about how data is related or how it will be extracted from the database. As a result, the same database can be viewed in many different ways.</p>
<p>An important feature of relational systems is that a single database can be spread across several tables. This differs from flat-file databases, in which each database is self-contained in a single table.</p>
<p><a href="http://www.webopedia.com/TERM/R/RDBMS.html">read more</a></p>
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