| Data Migration is the movement of legacy data to | | | | importing data to a new system. This can involve |
| new media and technologies as the older ones are | | | | entering the data manually, moving disk files from |
| displaced. Data Migration means what it sounds like | | | | one folder (or computer) to another, database |
| it means -- sort of. It's not data that moves one | | | | insert queries, developing custom software, or |
| from place to another. Data Migration is actually | | | | other methods. |
| the translation of data from one format to | | | | Data migration typically has four phases: |
| another format or from one storage device to | | | | - Analysis of source data, |
| another storage device. This also necessarily | | | | - Extraction and transformation of data, |
| requires someone or something to do the | | | | - Validation and repair of data, |
| translating. Data doesn't just get up and walk to | | | | - Use of data in the new program |
| another format all by itself. | | | | Data Migration is the process of data |
| Data is stored on various media in files or | | | | transferring between storage types, formats, or |
| databases, is generated and consumed by | | | | computer systems. It is often required when |
| software applications which in turn support | | | | organizations change computer systems or |
| business processes. The need to transfer and | | | | upgrade to new systems. Typically, data migration |
| convert data can be driven by multiple business | | | | is performed by a set of customized programs or |
| requirements and the approach taken to the | | | | scripts that automatically transfer the data. |
| migration depends on those requirements. Four | | | | Effectively migrating data requires extracting data |
| major migration categories are proposed on this | | | | from existing systems, mapping data from an old |
| basis. | | | | system to the new, loading the data into the new |
| - Storage migration | | | | system, and then verifying the data in the new |
| - Database migration | | | | system to ensure it was accurately translated, is |
| - Application migration | | | | complete, and supports processes in the new |
| - Business process migration | | | | system. |
| - Project versus Process | | | | So why do many data migration projects fail? |
| Basically Data migration is the process of | | | | |