Yearly Archives: 2012

Replication in SQL Server

By | December 31, 2012

Replication  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.It is a set of technologies for copying and distributing data and database objects from one database to another and then synchronizing between databases to… Read More »

Rebuild And Reorganization of Indexes

By | December 31, 2012

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 logical ordering based on the key value pairs does not match with the physical ordering inside the data… Read More »

Fragmentation in SQL Server

By | December 31, 2012

Fragmentation:- Fragmentation can be defined as condition where data is stored in a non continuous manner. In can be defined into two types 1. Internal Fragmentation 2. External Fragmentation Internal Fragmentation:- In this fragmentation, there exists a space between the different records within a page. This is caused due to the Insert, delete or Update process… Read More »

Isolation levels in SQL Server

By | August 19, 2012

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 isolation level set on the database level. If low level of Isolation is set, it… Read More »