Yearly Archives: 2012

Replication in SQL Server

Posted on December 31, 2012 by vivekjohari

Replication in SQL Server Introduction Replication in SQL Server is a way of distribution of database and their objects from one master database to one or more recipient databases which can be on the same server or on the remote server. … Continue reading →

Posted in SQL Replication, SQL Server | Tagged , | 19 Comments

Log Shipping in SQL Server

Posted on December 31, 2012 by vivekjohari

Log Shipping in SQL Server Log Shipping Log Shipping in SQL Server is a process of keeping the latest copy of the database of the primary database server on the secondary database server with the help of transaction logs backup. … Continue reading →

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Rebuild And Reorganization of Indexes

Posted on December 31, 2012 by vivekjohari

Rebuild and  Reorganization of Indexes SQL Server has the ability of maintaining the indexes whenever we makes changes (update, Insert, Delete) in the tables. Over a period of time, the may causes the fragmentation on the table in which  the … Continue reading →

Posted in SQL Indexes, SQL Server | Tagged , | 31 Comments

Fragmentation in SQL Server

Posted on December 31, 2012 by vivekjohari

Fragmentation:- Fragmentation can be defined as condition where data is stored in a non continuous manner. This article help in understanding the fragmentation in SQL Server. It can be defined into two types1. Internal Fragmentation 2. External Fragmentation Internal Fragmentation:- … Continue reading →

Posted in SQL Indexes, SQL Server | Tagged , | 2 Comments

Welcome 2013

Posted on December 31, 2012 by vivekjohari

Happy New Year 2013 May this new year bring lots of Happiness in all of your life. Let  welcome 2013 together with lots of Hopes and happiness.

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Happy Diwali

Posted on November 13, 2012 by vivekjohari

Wish you all a very happy and blessed festive season. May this festival of lights brings more brightness in your lives in every way. Happy Diwali 🙂 Play safe…!

Posted in Miscellaneous | Tagged | 32 Comments

Boyce – Codd Normal Form (BCNF)

Posted on August 19, 2012 by vivekjohari

Boyce – Codd Normal Form (BCNF)  :- A normal form is said to be a Boyce – Codd Normal Form if it is in 3NF and there is not a possibility of a key attribute is determined by a Non Key attribute. … Continue reading →

Posted in SQL Normalization, SQL Server | Tagged , | 8 Comments

Isolation levels in SQL Server

Posted on August 19, 2012 by vivekjohari

Isolation levels :- Isolation level is required to isolate a resource and protect it from other transactions. This is achieved with the help of locks but what locks are needed and how they can be established is decided on the … Continue reading →

Posted in SQL Isolation Level, SQL Server | Tagged , , | 33 Comments

Merge Command In Sql Server

Posted on April 17, 2012 by vivekjohari

Merge Command:- Merge command is a new feature introduced in the SQL Server 2008. It can perform Update, Insert and delete operations at a single statement which means all the data is processed and read only once instead of three … Continue reading →

Posted in SQL Merge Command, SQL Server | Tagged , | 4 Comments

Adding , Deleting and Updating a Column in a table

Posted on April 15, 2012 by vivekjohari

Many times we need to alter the table definition by adding , deleting or updating a column in the table. In this article, I am trying to explain the following :- 1. How to add a column 2. How to … Continue reading →

Posted in SQL Basic Concepts, SQL Server | Tagged , | 29 Comments