TECHNIQUES FOR ENABLING AND INTEGRATING IN-MEMORY SEMI-STRUCTERED DATA AND TEXT DOCUMENT SEARCHES WITH IN-MEMORY COLUMNAR QUERY PROCESSING

A "hybrid derived cache" stores semi-structured data or unstructured text data in an in-memory mirrored form and columns in another form, such as column-major format. The hybrid derived cache may cache scalar type columns in column-major format. The structure of the in-memory mirrored form...

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Bibliographic Details
Main Authors CHAVAN, Shasank K, CHANG, Hui Joe, MCMAHON, Douglas J, ROY, Shubhro Jyoti, LIU, Zhen Hua, MISHRA, Aurosish, ARORA, Vikas
Format Patent
LanguageEnglish
French
German
Published 05.05.2021
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A "hybrid derived cache" stores semi-structured data or unstructured text data in an in-memory mirrored form and columns in another form, such as column-major format. The hybrid derived cache may cache scalar type columns in column-major format. The structure of the in-memory mirrored form of semi-structured data or unstructured text data enables and/or enhances access to perform path-based and/or text based query operations. A hybrid derived cache improves cache containment for executing query operations. The in-memory mirrored form is used to compute queries in a transactionally consistent manner through the use of an invalid vector that used to determine when to retrieve the transactionally consistent persistent form of semi-structured data or unstructured text data in lieu of the in-memory form.
Bibliography:Application Number: EP20190737452