Validating data migration
Writing the same code repetitively to validate all the tables seems a wrong way. Rows Db BRows FROM ( SELECT DISTINCT Rows, Name FROM tables AS tbl INNER JOIN partitions AS p ON p.object_id = tbl.object_id ) Db A FULL OUTER JOIN ( SELECT DISTINCT Rows, Name FROM tables AS tbl INNER JOIN partitions AS p ON p.object_id = tbl.object_id ) Db B ON Db A. So whats the correct way of validating data migration. Before making any decisions, you should first fully understand the various options available for transferring the data from an Oracle database to a SQL Server database, particularly the advantages and limitations of each of the options.The second prerequisite is to document all the factors or characteristics of the original environment that could influence your decision making from the available options.During verification, there may be a need for a parallel run of both systems to identify areas of disparity and forestall erroneous data loss.Automated and manual data cleaning is commonly performed in migration to improve data quality, eliminate redundant or obsolete information, and match the requirements of the new system.
The data migration task can be broken up into the following three subtasks: There are two planning prerequisites.Data migration is the process of transferring data between computer storage types or file formats.It is a key consideration for any system implementation, upgrade, or consolidation.Step 5 includes several suggestions about activities that you might want to perform.However, the actual tasks that you perform will depend on the data that you have migrated.