公开(公告)号：US12093284B2

公开(公告)日：2024-09-17

申请号：US18295987

申请日：2023-04-05

Applicant: Snowflake Inc.

Inventor： Pui Kei Johnston Chu ,  Shreyas Narendra Desai ,  German Alberto Gil Echeverri ,  Prasanna Krishnan ,  Nithin Mahesh ,  Subramanian Muralidhar ,  Eric Robinson ,  Sahaj Saini

IPC: G06F16/00 ,  G06F16/22 ,  G06F16/23 ,  G06F16/27 ,  G06Q30/018 ,  G06Q30/0204

CPC classification number: G06F16/275 ,  G06F16/2282 ,  G06F16/2379 ,  G06Q30/0185 ,  G06Q30/0205

Abstract: A system for sub-table replication within a materialized view of a source data table. A materialized view of a source data table is generated based on a query, the source data table having a plurality of data table rows associated with a plurality of client identifiers and including an entitlements column and data content, the entitlements column including a plurality of provider account identifiers and a plurality of consumer account identifiers. An update to an entitlements table of the source data table is detected where the entitlements table includes a plurality of entitlements table rows and where the entitlements table rows are associated with the client identifiers, the consumer account identifiers, and the provider account identifiers. An update to the source data table based on the first update to the entitlements table is detected, and an incremental replication of the materialized view of the source data table is performed.

公开(公告)号：US20240303252A1

公开(公告)日：2024-09-12

申请号：US18668578

申请日：2024-05-20

Applicant: Snowflake Inc.

Inventor： Pui Kei Johnston Chu ,  Benoit Dageville ,  Shreyas Narendra Desai ,  Sameer Deshpande ,  Subramanian Muralidhar ,  Di Wu

IPC: G06F16/27 ,  G06F16/182 ,  G06F16/245

CPC classification number: G06F16/273 ,  G06F16/1844 ,  G06F16/245

Abstract: Techniques for database replication include a method performed by at least one hardware processor of a resource management node. The method includes detecting a request that a database instance of a database stored at a first network deployment is available at a second network deployment. Responsive to the request, the second network deployment is provisioned with a plurality of data objects. A first data object of the plurality of data objects includes a database shell. The database shell is reconfigured as the database instance of the database based on pushing data of the database into the database shell. Access to the database instance at the second network deployment is authorized based on at least a second data object of the plurality of data objects.

公开(公告)号：US20240281555A1

公开(公告)日：2024-08-22

申请号：US18475403

申请日：2023-09-27

Applicant: Snowflake Inc.

Inventor： Raja Suresh Krishna Balakrishnan ,  Khalid Zaman Bijon ,  Subramanian Muralidhar ,  David Schultz ,  Jian Xu

IPC: G06F21/62

CPC classification number: G06F21/6227 ,  G06F2221/2141

Abstract: Systems and methods for managing column hiding are provided. The systems and methods receive, from a client device, a query associated with a table. The systems and methods determine an access restriction associated with the client device. The systems and methods identify a column of the table that is restricted by the access restriction associated with the client device. In response to identifying the column of the table that is restricted by the access restriction associated with the client device, the systems and methods provide a result of the query that excludes data corresponding to the column.

公开(公告)号：US12050711B2

公开(公告)日：2024-07-30

申请号：US18378575

申请日：2023-10-10

Applicant: Snowflake Inc.

Inventor： Damien Carru ,  Pui Kei Johnston Chu ,  Benoit Dageville ,  Shreyas Narendra Desai ,  Subramanian Muralidhar ,  Bowen Zhang

IPC: G06F21/62 ,  G06F16/21 ,  G06F16/25

CPC classification number: G06F21/6218 ,  G06F16/21 ,  G06F16/256 ,  G06F2221/2141

Abstract: Embodiments of the present disclosure relate to sharing data using database roles. Database roles are generated within a database container of a provider account. Grants to a particular subset of the plurality of data objects of the database container may be assigned to each of the database roles, and each of the database roles are granted to a share object. The share object is mounted within a consumer account to generate an imported copy of each of the database roles. The imported copy of one or more of the database roles is granted to each of one or more account level roles of the consumer account. When a new object is added to a particular database role, it is immediately available for consumption by any account level roles to which the imported copy of the particular database role has been granted.

公开(公告)号：US11995126B2

公开(公告)日：2024-05-28

申请号：US18104271

申请日：2023-01-31

Applicant: Snowflake Inc.

Inventor： Khalid Zaman Bijon ,  Thierry Cruanes ,  Simon Holm Jensen ,  Allison Waingold Lee ,  Daniel N. Meredith ,  Subramanian Muralidhar ,  David Schultz ,  Zixi Zhang

IPC: G06F16/903

CPC classification number: G06F16/90335

Abstract: A system for enforcing projection constraints on data values stored in specified variables of a shared dataset of a cloud data platform. A request is received from a first account of the cloud data platform that identifies a first operation to be performed on the shared dataset. A first set of data, including data accessed from a first variable, is accessed from the shared dataset to use in performing the first operation. A projection constraint policy attached to the first variable of the shared dataset is determined, and the projection constraint policy is further determined to be enforced based on the request. Based on the first set of data and the first operation, an output to the first request is generated.

公开(公告)号：US20240168938A1

公开(公告)日：2024-05-23

申请号：US18427786

申请日：2024-01-30

Applicant: Snowflake Inc.

Inventor： Subramanian Muralidhar ,  Istvan Cseri ,  Torsten Grabs ,  Benoit Dageville

IPC: G06F16/23 ,  G06F9/46 ,  G06F16/18 ,  G06F16/245 ,  G06F16/27

CPC classification number: G06F16/2358 ,  G06F16/1865 ,  G06F16/2322 ,  G06F16/2365 ,  G06F16/245 ,  G06F16/278 ,  G06F9/466

Abstract: A system includes one or more processors configured as a change tracking manager, and data storage containing instructions executable by the one or more processors. A table data component of the change tracking manager stores table data for a database in a plurality of partitions. A transaction data component of the change tracking manager generates a change tracking entry based on executing a transaction on the table data. The change tracking entry includes information on at least one modification made to a first table version storing the table data. A change tracking component of the change tracking manager generates a change tracking stream associated with the at least one modification. The change tracking component updates a second table version to include the change tracking stream. The second table version includes modified table data based on completing execution of the transaction on the table data in the first table version.

公开(公告)号：US11989164B2

公开(公告)日：2024-05-21

申请号：US18051447

申请日：2022-10-31

Applicant: Snowflake Inc.

Inventor： Durga Mahesh Arikatla ,  Robert K. Chao ,  Li He ,  Joyce Lam ,  Xinyue Liu ,  Subramanian Muralidhar ,  Vishnu Dutt Paladugu ,  Shakhina Pulatova ,  Stephanie Stillman ,  Xin Wen ,  Di Wu ,  Ziqi Xu

IPC: G06F16/21

CPC classification number: G06F16/213

Abstract: A data dictionary generation system automatically populates and updates a data dictionary for listings offering shared data. A data dictionary includes metadata describing the shared data, including the individual objects, such as the individual tables, schemas, views, and functions. The shared data and each individual data object may be described in the data dictionary by a set of data fields that corresponds to the shared dataset or the object type of the individual object. The data dictionary can be presented to data consumers along with the description of the listing to provide data consumers with a comprehensive description of the shared data provided by a listing, including a high-level summary of the shared data and description of each individual object included in the shared data. The data dictionary allows data consumers to understand the contents of the shared data and how to use the shared data.

公开(公告)号：US11973763B1

公开(公告)日：2024-04-30

申请号：US18127576

申请日：2023-03-28

Applicant: Snowflake Inc.

Inventor： Damien Carru ,  Pui Kei Johnston Chu ,  Unmesh Jagtap ,  Xiaodi Ke ,  Subramanian Muralidhar ,  James Pan

IPC: H04L9/40 ,  G06F11/07 ,  G06F16/23 ,  H04L67/125 ,  H04L67/30

CPC classification number: H04L63/102 ,  G06F11/079 ,  G06F16/235 ,  H04L67/125 ,  H04L67/30

Abstract: Embodiments of the present disclosure provide a region-specific events account that is used as a central place to store the events shared by consumers of shared applications in that region. Use of such an account helps reduce the operational burden of a provider of the applications as they do not need to determine which accounts have shared events for each different consumer. The provider only needs to login to the events account which is in the same region as the consumer and can query all shared events from different applications that are being used in that region. Also, since the provider can designate an events account in each region, the shared events could be directly ingested into the events account without traveling to a different region.

公开(公告)号：US20240111885A1

公开(公告)日：2024-04-04

申请号：US18306704

申请日：2023-04-25

Applicant: Snowflake Inc.

Inventor： Durga Mahesh Arikatla ,  Subramanian Muralidhar ,  Vishnu Dutt Paladugu ,  Shakhina Pulatova ,  Di Wu ,  Ziqi Xu

IPC: G06F21/62 ,  G06F21/60

CPC classification number: G06F21/6218 ,  G06F21/604 ,  G06F2221/2141

Abstract: A data dictionary generation system utilizes a background service that is programmed to automatically populate and update a data dictionary for listings offering shared data. A data dictionary includes metadata describing the shared data overall as well as the individual objects included in the listing, such as the individual tables, schemas, views, and functions. To generate the data dictionary, the data dictionary generation system analyzes the shared data to identify objects, identifies a set of data fields associated with each identified object and populates the set of data fields associated with each identified object based on the shared data offered by the listing. To ensure that a data dictionary for each listing remains up to date, the data dictionary generation system periodically scans the listings to identify any changes to share access granted to the listings.

公开(公告)号：US20240095393A1

公开(公告)日：2024-03-21

申请号：US18521589

申请日：2023-11-28

Applicant: Snowflake Inc.

Inventor： Artin Avanes ,  Khalid Zaman Bijon ,  Zheng Mi ,  Subramanian Muralidhar ,  David Schultz ,  Jian Xu

IPC: G06F21/62 ,  G06F16/22 ,  G06F21/60

CPC classification number: G06F21/6227 ,  G06F16/2282 ,  G06F21/604 ,  G06F21/62 ,  G06F21/6218 ,  G06F2221/2141

Abstract: Row-level security (RLS) may provide fine-grained access control based on flexible, user-defined access policies to databases, tables, objects, and other data structures. A RLS policy may be an entity or object that defines rules for row access. A RLS policy may be decoupled or independent from any specific table. This allows more robust and flexible control. A RLS policy may then be attached to one or more tables. The RLS policy may include a Boolean-valued expression.