公开(公告)号：US20200334244A1

公开(公告)日：2020-10-22

申请号：US16389304

申请日：2019-04-19

Applicant: ORACLE INTERNATIONAL CORPORATION

Inventor： Beda Christoph HAMMERSCHMIDT ,  Zhen Hua LIU ,  Vikas ARORA ,  CHANDRASEKHARAN IYER ,  Beethoven CHENG ,  Ying HU ,  Douglas James McMahon

IPC: G06F16/242 ,  G06F16/25 ,  G06F9/448 ,  G06F8/41 ,  G06F8/76

Abstract: Described is a system, method, and computer program product to perform bi-directional mapping of hierarchical data (e.g. JSON, XML) to database object types (e.g., user defined database object types).

公开(公告)号：US12287777B2

公开(公告)日：2025-04-29

申请号：US17966730

申请日：2022-10-14

Applicant: Oracle International Corporation

Inventor： Zhen Hua Liu ,  Juan R. Loaiza ,  Sundeep Abraham ,  Shubha Bose ,  Hui Joe Chang ,  Shashank Gugnani ,  Beda Christoph Hammerschmidt ,  Tirthankar Lahiri ,  Ying Lu ,  Douglas James McMahon ,  Aurosish Mishra ,  Ajit Mylavarapu ,  Sukhada Pendse ,  Ananth Raghavan

IPC: G06F16/00 ,  G06F16/23 ,  G06F16/2455

Abstract: JSON Duality Views are object views that return JDV objects. JDV objects are virtual because they are not stored in a database as JSON objects. Rather, JDV objects are stored in shredded form across tables and table attributes (e.g. columns) and returned by a DBMS in response to database commands that request a JDV object from a JSON Duality View. Through JSON Duality Views, changes to the state of a JDV object may be specified at the level of a JDV object. JDV objects are updated in a database using optimistic lock.

公开(公告)号：US10528538B2

公开(公告)日：2020-01-07

申请号：US15281746

申请日：2016-09-30

Applicant: Oracle International Corporation

Inventor： Zhen Hua Liu ,  Aleksandra Czarlinska ,  Douglas James McMahon ,  Asha Makur

IPC: G06F16/22 ,  G06F16/23 ,  G06F16/31 ,  G06F16/2455

Abstract: Techniques are described herein for using user-defined aggregate functions for updating inverted index tables. A user-defined aggregate function is registered in a database system for updating an index table based on changes stored in a staging table. A query specifying the user-defined aggregate function may be executed in parallel to parallelize the updating of the index table.

公开(公告)号：US20180096007A1

公开(公告)日：2018-04-05

申请号：US15281746

申请日：2016-09-30

Applicant: Oracle International Corporation

Inventor： Zhen Hua Liu ,  Aleksandra Czarlinska ,  Douglas James McMahon ,  Asha Makur

IPC: G06F17/30

CPC classification number: G06F16/22 ,  G06F16/23 ,  G06F16/24556 ,  G06F16/319

Abstract: Techniques are described herein for using user-defined aggregate functions for updating inverted index tables. A user-defined aggregate function is registered in a database system for updating an index table based on changes stored in a staging table. A query specifying the user-defined aggregate function may be executed in parallel to parallelize the updating of the index table.

公开(公告)号：US11640380B2

公开(公告)日：2023-05-02

申请号：US17198159

申请日：2021-03-10

Applicant: Oracle International Corporation

Inventor： Hui Zhang ,  Zhen Hua Liu ,  Ying Lu ,  Beda Christoph Hammerschmidt ,  Douglas James McMahon ,  Denis B. Mukhin

IPC: G06F16/22

Abstract: Herein is acceleration for JavaScript object notation (JSON) documents in a relational database based on multilevel, multifield, multivalued indexing and querying. In an embodiment, into a table in a relational database, a computer stores many hierarchical data objects that respectively contain multiple levels that respectively contain one or more fields. An index is generated for indexed values in fields in at least two of the multiple levels. Based on the index, a database statement that references the table in the relational database and at least one of the indexed fields is executed. Indices herein provide matching to more fields in more levels of hierarchical data objects thereby decreasing or eliminating further filtering by brute force after index access. Matching ordinal positions within an array field needs no further filtration after index access. A single index provides increased spatial locality of index entries for acceleration. Index maintenance is minimized for acceleration.

公开(公告)号：US20220229971A1

公开(公告)日：2022-07-21

申请号：US17715384

申请日：2022-04-07

Applicant: Oracle International Corporation

Inventor： Zhen Hua Liu ,  Beda Christoph Hammerschmidt ,  Douglas James McMahon ,  Joshua Jeffrey Spiegel

IPC: G06F40/146 ,  G06F16/22 ,  G06F16/23

Abstract: Herein are fine grained updates to pieces of JavaScript object notation (JSON) documents by database statements that can update, delete, and insert parts of JSON documents. In an embodiment, a computer receives a request that specifies a modification of a JSON document that is stored in a compressed format in persistent storage. The modification adds additional content to the JSON document, and/or replaces an old value in the JSON document with a new value that is not a same size as the old value. The modification is recorded in a change log. The change log is eventually applied to the compressed format of the JSON document in the persistent storage without entirely rewriting the compressed format of the JSON document in the persistent storage.

公开(公告)号：US12298946B2

公开(公告)日：2025-05-13

申请号：US17966736

申请日：2022-10-14

Applicant: Oracle International Corporation

Inventor： Zhen Hua Liu ,  Juan R. Loaiza ,  Sundeep Abraham ,  Shubha Bose ,  Hui Joe Chang ,  Shashank Gugnani ,  Beda Christoph Hammerschmidt ,  Tirthankar Lahiri ,  Ying Lu ,  Douglas James McMahon ,  Aurosish Mishra ,  Ajit Mylavarapu ,  Sukhada Pendse ,  Ananth Raghavan

IPC: G06F16/20 ,  G06F16/21 ,  G06F16/2453 ,  G06F16/84

Abstract: JSON Duality Views are object views that return JDV objects. JDV objects are virtual because they are not stored in a database as JSON objects. Rather, JDV objects are stored in shredded form across tables and table attributes (e.g. columns) and returned by a DBMS in response to database commands that request a JDV object from a JSON Duality View. Through JSON Duality Views, changes to the state of a JDV object may be specified at the level of a JDV object. JDV objects are updated in a database using optimistic lock.

公开(公告)号：US11550785B2

公开(公告)日：2023-01-10

申请号：US16389304

申请日：2019-04-19

Applicant: ORACLE INTERNATIONAL CORPORATION

Inventor： Beda Christoph Hammerschmidt ,  Zhen Hua Liu ,  Vikas Arora ,  Chandrasekharan Iyer ,  Beethoven Cheng ,  Ying Hu ,  Douglas James McMahon

IPC: G06F16/242 ,  G06F16/25 ,  G06F16/84

Abstract: Described is a system, method, and computer program product to perform bi-directional mapping of hierarchical data (e.g. JSON, XML) to database object types (e.g., user defined database object types).

公开(公告)号：US11409741B2

公开(公告)日：2022-08-09

申请号：US15993438

申请日：2018-05-30

Applicant: Oracle International Corporation

Inventor： Beda Christoph Hammerschmidt ,  Zhen Hua Liu ,  Vikas Arora ,  Prakashkumar Thiagarajan ,  Douglas James McMahon

IPC: G06F16/00 ,  G06F16/2453 ,  G06F16/22 ,  G06F16/80 ,  G06F16/25

Abstract: Functionalities of new data types are enabled for data stored using native data types (“recognized data types”) supported by DBMSs. Values having a latent data type may be stored using a recognized data type of a DBMS. That is, a value stored in a database table may be recognized by a DBMS as having a recognized data type (e.g., character string) but the value may also include information that indicates the value conforms to a particular latent data type. DBMSs compile database statements. The database statement can contain multiple expressions that may specify a latent data type or that may have a recognized data type but that also imply latent data types. By determining that various expressions have latent data types, operations that rely on the expressions as having a latent data type may be validated in a query and executed accordingly.