37 results about "Relational algebra" patented technology

The invention provides a tensorized heterogeneous data processing method and device, equipment and a storage medium. The method comprises the steps of obtaining a high-level query statement corresponding to data in a to-be-processed database table; the advanced query statement is analyzed, a logic execution plan corresponding to the advanced query statement is obtained, and the logic execution plan comprises a relational algebraic operator; mapping the relational algebraic operator into a tensor execution operator based on a query planner; the tensor execution operator is dynamically scheduled to a CPU or a DPU end for execution through a tensor execution engine, in the method, a relational algebraic operator is mapped into the tensor execution operator based on a query planner, the tensor execution operator is dynamically scheduled to the CPU or the DPU end for execution through scheduling of the tensor execution engine, high bandwidth and parallelism in the PIM can be fully utilized, and the performance of the PIM is improved. And meanwhile, the global control and complex calculation capability of the CPU is reserved, and the data processing efficiency is improved.

The invention relates to the technical field of databases, and particularly discloses a kernel-level multi-protocol supporting database system and a data communication method. According to the system, the support capabilities of multiple database protocols such as MySQL and PostgreSQL are originally integrated in a database kernel to form a unified database instance. The basic principle is that client connections are directly distributed through an instantaneous routing mechanism of a network port; syntax and deep semantics (such as transactions, types and error codes) of different protocols are converted into a unified relational algebraic expression in a coordinated mode through a built-in unified semantic core layer; and optimizing and executing the unified semantic expression through a protocol-independent core processing layer, and realizing cross-protocol execution plan and result reuse by using a global DAG cache based on semantic hash. According to the method, high-performance and high-compatibility multi-protocol data service is realized, and the problems of performance overhead and incomplete semantic conversion caused by an external proxy architecture are thoroughly eliminated.