Sap Se

Hanggjun Cho

Eunsang Kim

Sunghoon Lee

Joo Yeon Lee

Myung Sun Park

Rajnish Chitkara

Kyungyul Park

Juhyeon Jeong

Abhishek Singhi

Anita Patel

Marlon McKenzie

Michael Vander Ploeg

Disclosed herein are system, method, and computer program product embodiments for database modification and processing functionality. An embodiment operates by providing a batch of values stored in rows corresponding to a particular column responsive to a request to encrypt the values of the particular column. Encrypted values corresponding the batch of values are received and stored in a hidden column. A status of the rows corresponding to batch of values of the hidden column is updated to indicate in which rows of the hidden column the received encrypted values have been stored. Updated encrypted values are received and stored in the hidden column. The particular column is replaced with the hidden column.

Database modification and processing system

Systems and methods for generating a metadata log in a database recovery system include generating, at its primary system, a metadata log for a logging period. A change applied to a metadata object accessible from the primary system is detected, and upon detection, the system identifies a pair of a unique metadata identifier and a metadata type for the changed metadata object and determines a metadata structure of the changed metadata object. A data exchange object for the metadata structure is generated and a data exchange element from the data exchange object is created. The metadata log is updated with log information that includes the data exchange element and the pair, which is associated with the data exchange element. Upon the logging period ending, the metadata log is transmitted to a secondary system of the database recovery system for replaying. Related apparatus, systems, techniques and articles are also described.

Logical logging for in-memory metadata store

Systems and methods for generating a platform-independent metadata catalog framework of a database system are disclosed. These include receiving, at the database system, a metadata object, and determining a version of the received metadata object. Responsive to determining that a metadata catalog, which has catalog entries associated with unique versions of metadata objects, does not include a catalog entry associated with the version of the received metadata object, a catalog entry in the metadata catalog is created. The created catalog entry is then associated with the version of the received metadata object. Furthermore, a version number based on the version of the received metadata is generated, which is associated with the created catalog entry. Related apparatus, systems, techniques and articles are also described.

Metadata cataloging framework

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Seoul, South Korea

Hanggjun Cho