1. A method, comprising: performing, by one or more computing devices: accessing an operational log of a database to detect an update to the database; in response to detecting an update in the operational log of the database, extracting a subset of data from the operational log, wherein said extracting is based on one or more rules; transforming the extracted subset of data from the operational log into a data format for another database, wherein the data format for the other database is different from a data format for the database; and loading, into the other database, the subset of data transformed into the data format for the other database.