The mapping and loading stage is the culmination of data migration procedure. It is at this moment when the results become evident and it is discovered whether the expected level of quality, the absence of errors so necessary was achieved, the deadlines established for project execution were met, the new system is operating at full capacity or whether, Conversely, the operation has been a failure.
When the data has been recognized, analyzed, understood, cleansed, approved, enriched, adequate and the corresponding tests have been conducted in the repositories enabled for this purpose, it is time to proceed with the loading. In general terms, and beyond the existing dichotomy between ETL and ELT, This is the common procedure.
El nuevo sistema, cuya infraestructura ya es conocida por el desarrollador, espera que los datos lleguen, de forma directa o por etapas, de uno o más módulos, dependiendo de la metodología que se haya decidido usar para realizar el data migration.
Si la planificación es correcta, the Business rules y los datos se trabajan de forma exhaustiva, esta etapa no implica ninguna dificultad, ni demasiado tiempo. Cuando este no es el caso, si en este punto las cosas no suceden así, entonces será necesario retroceder en todos los pasos dados hasta hallar el origen de los desacuerdos que requieren soluciones.
Photo credits: “Mano con Tablet Pc” de Naypong
