SQL Server Database Tutorials

SQL Server Database Management Tutorials and Database Administration Articles
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A trigger is a special kind of stored procedure that is invoked whenever an attempt is made to modify the data in the table it protects. Modifications to the table are made ussing INSERT,UPDATE,OR DELETE statements.Triggers are used to enforce data integrity and business rules such as...
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Introduction Stored procedures are special objects available in sql server. Its a precompiled statements where all the preliminary parsing operations are performed and the statements are ready for execution. Its very fast when compared to ordinary sql statements where the sql...
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There are many occasions where if someone updates a records or even deletes a record we need to keep the Audit trails of the record updated or deleted or even keep a history of records as what are the updates that happened on the database as well as what are the records deleted from the table. In...
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What is SMO? SQL Server Management Objects (SMO) is a collection of objects that are designed for programming all aspects of managing Microsoft SQL Server. SMO Overview SQL Server Management Objects (SMO) are objects designed for programmatic management of Microsoft SQL Server. You can...
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Introduction This article deals with parsing techniques involved in executing the sql server query. Nowadays, stored procedures forms a strong back ground in accessing the database. Why is it so???? how it's related to my query parsing technique Background If we think about the query...
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Introduction I had a complex SQL query that was used to extract data from my system and send it across via web request to an external system. The query was taking unduly longer time to run. I made few changes to the query structure and reduced it run time to 7 mins. A part of the main query...
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SQL Server implements Client/Server technology.A number of client send queries to the Central Server.The server after receiving the query request,parses it for syntax errors and process the request.Since the query passes from the client to the server through the network it adds to network...
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CUBE generates a result set that represents aggregates for all combinations of values in the selected columns. CUBE automatically generates a summation rollup to the top level of a GROUP BY. Lets us look one Example. Create table #TempTable(Items varchar(30), ...
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Concatenating data with Multiple Result(s) using FOR XML PATH Create table #TempProducts(Items Varchar(30),Colour Varchar(15)) Insert into #TempProducts values('Table','Red'); Insert into #TempProducts values('Table','Green'); Insert into #TempProducts values('Table','Blue'); Insert...
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Using String Functions User can use the string functions for changing the string values in the result set. They can be used with char or varchar data types. They can be used as a part of the expression. The syntax for using the string function is as shown below: SELECT function_name...
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SQL Server 2012 components The architecture of SQL Server database engine is as shown below: http://imgs.g4estatic.com/sql-server/2012-architecture/Fig1.jpg There are four major components in SQL Server database engine. The protocol layer, query processor, storage engine, and SQLOS. Every...
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SQLOS Architecture The SQLOS is the server application used for managing the operating system resources. The buffer management, scheduling, deadlock detection, exception handling, extended events, etc are managed. The operating system is called and the scheduling functions efficiently schedule...
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The user interface of report builder The various parts of the report builder interface are described. User can access the report builder from Start, All Programs, and Microsoft SQL Server 2008 report builder. The report builder interface is as shown below: ...
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SQL Server B-tree indexes The indexes in SQL Server are organized in B-tree structure. B-tree means balanced tree. In B-tree, at the top there is a root node, leaf node at bottom. The indexes have two components as leaf level and non leaf level. The non leaf levels are useful for navigation....
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In SQL Server, the LIKE operator is used for searching the text value in a particular column. The synonyms and antonyms of the specific word are searched using the full text search. The full text search feature is the default and enabled in SQL Server. In this article, we shall learn about the full...
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User needs to create and manage the indexes in SQL Server. There are various types of indexes in SQL server. We shall explore in detail about the indexes in SQL Server. An index is a structure associated with the SQL Server for implementing the indexes on the tables. It enables faster data...
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Report Authoring The report writing needs to plan with other activities. The considerations are audience, report structure, look and feel of report, report visibility, delivery format, used on web or desktop, etc. All these considerations are connected with each other. Parameterized reports...
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There are certain conditions when either all the statements are executed successfully or none of them are executed. The data integrity is maintained by the user. The SQL Server helps user to maintain the integrity of data. There are several sources accessing a single resource at a time. To prevent...
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1. Information about user There are requirements when user wants to know that who is connected to the SQL Server. The T-SQL provides the stored procedure sp_who. It helps know who all are connected to the to the computer. The syntax for the stored procedure is as mentioned below: sp_who...
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A trigger is a stored procedure used to execute the statements when an event is raised. The trigger is used statements for actions like insert, delete or update the data. The basics about triggers in sql server is here. In this article we will discuss about several trigger types used for...
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