SARVACORP

Database Migration

 

migration

 

Database Migration is migrating your existing database from older version to newer versions. Though it may sound as simple as exporting the old and importing the new, however it is very complicated and thus requires experts who help in performing this process efficiently.

A Database Migration activity may include a change in database version or also include upgrading or changing the existing Operating system of the database server.Our Expertise help you ensures that the all risks involved in this activity are actions are actioned and put forward to mitigate that risk.

 

Database Migration methodology:

 
data-migration-steps

 

  • Analyze the existing database environment and risk.
  • Prepare Plan for migration and risk mitigation.
  • Migration of existing data to new environment.
  • Verify all parameters and do sanity testing.
  • Performance tune the new environment
  • Apply security standards to new environment

 

Data Migration Services

ETL – extract, transform and load – is the set of processes by which data is extracted from numerous databases, applications and systems, transformed as appropriate, and loaded into target systems.


 

The first part of the extract, transform and load (ETL) process is understanding the data sources. The transformations are organization-specific and Integration is sometimes included in the ETL process; because it requires an in-depth knowledge of the organization and its business. More than half of all development work for data warehousing projects is typically dedicated to the design and implementation of ETL processes.Poorly designed ETL processes are costly to maintain, change and update, so it is critical it is to make the right choices in terms of the right technology and tools that will be used for developing and maintaining the ETL processes.

The ETL process comes in three main parts.

  • The Extraction Phase
  • The Transformation Phase
  • The Load Phase

 

The Extraction Phase:

This phase involves taking your data in any one of the forms from a database or other sources.

 

The Transform Phase:

This phase involves processing or converting the extracted data from its previous form into the form that is needed so that it can be placed into another database in a much more meaningful form. Transformation occurs by using rules or lookup tables or by combining the data with other data.

db-upgrade

The Load Phase:

This phase involves the writing the data into the target database. ETL is used to migrate data from one database to another, to form data marts and data warehouses and also to convert databases from one format or type to another. Some of the numerous technological approaches and solutions available on the market include:

  • Traditional engine-based
  • ETL products
  • RDBMS proprietary solutions

 

ELT Tools based on a code-generation approach that uses the power of the RDBMS engines to perform the data transformations