公开(公告)号：US10754857B2

公开(公告)日：2020-08-25

申请号：US16112204

申请日：2018-08-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Myung Cheol Lee

IPC: G06F16/2453 ,  G06F16/28 ,  G06F16/242

Abstract: A database system based on just-in-time (JIT) compilation performs a branch optimization and a loop optimization on the stored procedure. An interpreted query processor generating a structured query language (SQL) execution plan regarding an input online transaction processing (OLTP) query, an online analytical processing (OLAP) analysis, and a stored procedure. A JIT-based query processor receives the SQL execution plan, optimizes a branch and a loop in the received SQL execution plan, and then generates an optimized JIT execution plan. The JIT-based query processor generates a query processing executor performing query processing based on the JIT execution plan and provides a result of the query processing performed by the query processing executor.

公开(公告)号：US10061858B2

公开(公告)日：2018-08-28

申请号：US14606084

申请日：2015-01-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Choon Seo Park ,  Jin Hwan Jeong ,  Mi Young Lee ,  Sung Jin Hur ,  Myung Cheol Lee ,  Yong Ju Lee

IPC: G06F15/16 ,  G06F17/30

CPC classification number: G06F16/955 ,  G06F16/24568

Abstract: Provided are a method and apparatus for processing a data stream capable of providing a data flow processing language to support real-time processing of an exploding data stream and providing an environment for executing the data flow processing language in a cluster system. The data flow-based exploding data stream processing method includes receiving a big data real-time processing service described in a real-time data flow language, interpreting the big data real-time processing service to generate a distributed stream processing service, and distributively deploying the distributed stream processing service in a cluster system including multiple nodes and configuring an execution environment for executing the distributed stream processing service in each node.