Validating data after migration


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Data Migration Integrity Testing Plan




Free research other between portfolio and the new ticker — for each covered of data in the recent application compare its global type in the new asset and then miggration them — Female level mapping. The splinter between the parties should be extensively demanded, as the data should not be held, lost, and corrupted when it is observed through components. Unauthorized the world of Bed-Migration fast becomes very risky, it is ideal to find the personal tests that need to be done first to help that Give is available and then to find out the investing later.


Here, the number of records migrated is compiled from the destination system and then compared to the number of records migrated. In short, source values and the field level mappings are used to calculate the expected results at the destination. The advantages of the automated approach include the ability to identify errors that are less likely to occur the proverbial needles in a haystack.

When compared to sampling approaches, it is easy to see that automated testing saves significant time and minimizes the typical iterative test, debug and retest found with afteer. Migrated content has special considerations. For those cases where content is being migrated without change, testing should verify the integrity of the content is maintained and the content is associated with the correct destination record. Data Migration User Acceptance Testing Functional subtleties related to the co-mingling of migrated data and data created in the destination system may be difficult to identify early in the migration process. Later it will take those sequels, execute it, and store the results in a file.

All steps should be performed on both the source database and the target database. Once finished, you can compare both the files generated on the source and target database afteg identify the mismatches. Automating this process is similar to other validation testing and requires writing an automation script to validate the count of nullable and non-nullables values present in the same columns between the source and target databases. Ad Hoc Testing The final step in the testing process, ad hoc testing ensures that the target business application and adta newly migrated data are able to successfully process the data. Miigration hoc testing may, therefore, include running a business query from customer or examining important data or frequently used tables to ensure that the source and target data match and the data migrated successfully.

The procedures that you Validatint to validate the success of the migration in a live target deployment are essentially the same regardless of your product release 10g Only certain product terms differ. The following procedure provides steps and an outline of activities that you might perform to validate migrated data. Data cleaning needs to be incorporated also, to prevent transfer of invalid or obsolete data types from the legacy system to the new system. However, no matter how well a migration goes, some clean-up is always needed during the validation and testing stage. Data validation and testing As mentioned earlier, a trickle migration, due to its phased nature, makes it easier to carry out data validation and testing of migrated data.

This helps to identify and rectify migration issues early in the migration cycle. A key activity at this stage is that the migration team and functional experts carry out tests on the new system. They should ensure that the data has been migrated correctly and that specified system transactions on the new platform are processed successfully. Post-migration support and project signoff The ultimate aim of any migration activity is to improve business performance and deliver competitive advantage. It is therefore important that there is a dedicated team available to offer support in identifying and correcting system issues that may arise post-migration. This will also ensure a proper handshake between the end users and the various functional support staffs, who will need an adequate level of knowledge required to administer the new systems.

After this, the project team validates that every mapped data has been successfully migrated and all post-migration questions has been answered before business signoff. Examine your current business rules for data and redefine them if necessary.

By returning this process, you can trade Vaildating metadata into a twisted table where the supply can be bad with other metadata to identify any further mismatches prior to run world. As we trade, the application migration to a new system could be for another takes, system consolidation, obsolete reactor, optimization or any other activities.

Jigration data must be compatible and in compliance with your validation rules. Regulatory compliance may also be an issue. It may be necessary to apply one set of rules for the migration atter then switch Valirating a more migratipn set for the data after migration. Who has the final authority over data? Understand and document the technical aspects of the Legacy and New system of Migration, to ensure that the test environment migfation set up as per that. Prepare Migration Test Specification document which clearly describes the test approach, areas of testing, testing methods automated, migratointesting methodology black box, white box testing techniqueNumber of cycles of testing, schedule of testing, approach of creating data and using live data sensitive info needs to be maskedtest environment specification, testers qualification etc.

Analyze and document the to-do list for production migration and publish it well in advance Different Phases of Migration Given below are the various phases of Migration. Phase 1: Pre-Migration Testing Before migrating the data, set of testing activities are performed as a part of Pre-Migration test phase. This is ignored or not considered in simpler applications. But when complex applications are to be migrated, the Pre-Migration activities are a must. Below is the list of actions that are taken up during this phase: Perform data mapping between legacy and the new application — for each type of data in the legacy application compare its relevant type in the new application and then map them — Higher level mapping.

If the new application has the field that is mandatory in it, and but it is not the case in legacy, and then ensure that the legacy does not have that field as null. A number of records in each table, views should be noted in the legacy application. Study the interfaces in the new application and their connections.

After migration data Validating

Data flowing in the interface should be highly secured and not broken. Prepare test cases, test scenarios, and use cases for new conditions in the new applications. Validatong a set of test cases, scenarios with a set of daga and keep the results, logs stored. The same needs to Vaidating verified after Migration to ensure that legacy data and functionality are intact. Count of the data and records should be noted down clearly, it needs to be verified after Migration for no loss of data. Phase 2: Ideally, the migration activity begins with the data back up on the tape, so that, any time the legacy system can be restored.

Verify if the document is clear and easy to follow. All the scripts and steps must be documented correctly without any ambiguity. Migration scripts, guide and other information related to actual migration needs to be picked up from the version control repository for execution.


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