Abstract: A computer implemented method comprising the steps of: detecting a user selection of a plurality of visual representations of data associated with at least partially different sources of data, enabling a user to move the location of at least one of the selected visual representation of data on a display, and thereby to move an active area associated with it, generating a new visual representation of data, and displaying the new visual representation of data, wherein the step of generating is performed after a user has moved at least one of the selected visual representations of data, and an active area associated with it, so that the moved active area overlaps an active area associated with another of the selected visual representations; the step of generating is at least partially in response to the overlap of active areas of selected visual representations; and the new visual representation of data is based on/represents data represented/displayed in the selected visual representations of data which have ov

Abstract: A computer apparatus is provided for use with a database management system. The computer apparatus is instructed to carry out a first task and a second task in series on a section of data, by: (a) instructing the first task process to begin the first task on a first part of the section of data in the database, and (b) after the first task process on the first part of the section of the data is complete, instructing the first task process to carry out the second task on the first part of the section of data on which the first task has already been carried out, or carry out the first task on the second part of the data, or pipeline the second task to a third task process, or carry out the first task on a second part of the section of data.

Abstract: A system for encrypting data comprising a computer configured to encrypt a plurality of data entries using at least one encryption algorithm and a system memory, wherein the computer is configured to use different keys with the encryption algorithm(s) for each data entry and the system is configured to store in the system memory or transmit for storage in an external memory the encrypted data corresponding to each entry along with an identifier corresponding to at least part of the key used to encrypt that entry, such that when decrypting a data entry in the system or external memory the associated identifier can be used to locate at least part of the correct key.