Mixed storage system and mixed storage method for supporting Hive DML (data manipulation language) enhancement
A hybrid storage, the only technology, applied in the direction of instrumentation, computing, electrical digital data processing, etc., can solve the problem of data change that cannot be solved, and does not involve enhanced SQL interface DML operations, etc., to achieve efficient data change operations and efficient data query The effect of the operation
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[0061] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0062] Firstly, the terminology related to the system is introduced.
[0063] The formal description of DualTable is: DualTable:=. Among them, ID Mechanism is a mechanism to maintain the unique ID of each row of data. The unique ID of a data row is used to link two storage systems; Master Table (main table) is a storage system used to support efficient sequential reading; Attached Table (attached table) It is a storage system for storing changed data; Operation Set is an operation set provided by DualTable, defined as: Operation Set:=Union Read (read)|UPDATE (update)|DELETE (delete)|INSERT INTO (insert)|CREATE (table creation)|DROP (table deletion)|LOAD (data import)|COMPACT (data merging); Cost Model is a cost model that supports the implementation of read and write operations.
[0064] The...
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