Abstract: A data privacy management system includes a data repository, a private data mediating system and a privacy manager. The data repository stores private data items in an obfuscated form. Each private data item has associated privacy policy data a defining conditions to be met to ensure the privacy of the data item. A private data mediating system communicates with the privacy manager to obtain de-obfuscated private data items that are extracted from the data repository 10. De-obfuscation of the data 51, 53 is subject to satisfaction of the privacy manager that the respective conditions ensuring privacy of the data item are met.

Abstract: A data recorder includes a recording unit for recording data having a predetermined data format and a frame address in a recording medium in units of frames each consisting of predetermined amount of data, and for forming a plurality of Partitions each consisting of a plurality of data areas in which different types of data are recorded during recording. The data recorder performs initialization of a length of at least one of the Partitions.

Abstract: The present invention provides a data storage method for storing compressed user data and associated information on magnetic tape. User data from a host computer is organized into a plurality of records. The user data is then compressed according to a compression algorithm. The compressed data and information related to the data compression (DC) algorithm are then stored on magnetic tape. The DC algorithm information pertains to at least one stored record of compressed data and is stored in a record header field. The DC algorithm information may provide for example, an algorithm number and/or an indicator for starting a data dictionary used for data compression and decompression. The user data may further be organized into groups having a group index for incorporating the DC algorithm information. The data records may be further organized into entities having at least one record.