DATABASE MANAGEMENT ENGINE FOR A DATABASE MANAGEMENT SYSTEM

    公开(公告)号:US20230214511A1

    公开(公告)日:2023-07-06

    申请号:US17567022

    申请日:2021-12-31

    CPC classification number: G06F21/6218 G06F11/1469 G06F2201/84

    Abstract: Methods, systems, and computer storage media provide a privacy compliance notification indicating a database's level of compliance with a privacy policy after restoring the database to the database's backup copy. The database is associated with a database management engine. The database supports privacy-based first-class data entities. The privacy-based first-class data entities are database entities having privacy system-level metadata properties associated with data operations in a database language syntax. The privacy compliance notification may be generated based on determining whether a privacy database operation associated with a database journal and a privacy journal has been executed on a database since the database was restored to a backup copy of the database. The database transaction journal includes a transaction log of database operations executed against the database, and the privacy journal includes the database operations logged as privacy database operations associated with the plurality of privacy-based first-class data entities.

    STORAGE SYSTEM AND STORAGE SYSTEM CONTROL METHOD

    公开(公告)号:US20230205650A1

    公开(公告)日:2023-06-29

    申请号:US17941906

    申请日:2022-09-09

    Applicant: Hitachi, Ltd.

    CPC classification number: G06F11/1666 G06F2201/84

    Abstract: A storage system includes one or more storage units, and a calculator. Each of the one or more storage units has plural physical storage devices, and a processor. The calculator has a controller that processes data inputted to and outputted from the storage unit by the processor. The storage system subjects the data to redundancy and stores the redundant data, and when a failure in which the data related to a read request cannot be read from one of the physical storage devices has occurred, reads the data from the readable physical storage device, recovers the data related to the read request, and transmits the recovered data to a request source of the read request. A process for recovering the data related to the read request from the read data can be selectively executed by the controller of the calculator and the processor of the storage unit.

    BACKUP AND RECOVERY UNDER GROUP-LEVEL ENCRYPTION

    公开(公告)号:US20230185675A1

    公开(公告)日:2023-06-15

    申请号:US17546406

    申请日:2021-12-09

    Applicant: SAP SE

    Inventor: Dirk Thomsen

    CPC classification number: G06F11/1469 G06F21/64 G06F21/602 G06F2201/84

    Abstract: Computer-readable media, methods, and systems are disclosed for processing backup and recovery of pages in an in-memory database system employing tenant-based, group-level encryption for a plurality of tenants. Page metadata for a page may be collected. The page may comprise a header and a set of page contents. The page metadata may be stored with the page header. When a backup request is received, the page may be loaded into a backup stream. The page may be loaded with the header unencrypted and the page contents encrypted. When a recovery request is received, the data page may be retrieved from the backup stream. A converter may be rebuilt using the page metadata. The data page may then be written to the main memory of the database system. The page contents may be decrypted by the converter.

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