The three key modules are query optimizer, execution engine, and storage engine. Among them, the role of execution engine to the DBMS is like the chef to a restaurant. This article focuses on the execution engine of theApache Dorisdata warehouse, explaining the secret to its high performance....
It works on SQL, and like any other DBMS, under a wide range of scenarios, the system doesn’t provide the level of efficiency you require. This article helps you connect SQLite to SQL Server seamlessly. It also gives a brief introduction to SQL Server and SQLite before diving into the...
1. Logical Extraction involves extracting data from a database or other structured data source in a way that preserves the relationships and integrity of the data. Logical extraction typically uses a database management system’s (DBMS) query language or API to extract the data in a structured...
We also outline a possible extension of existing processing strategy for relational DBMSs to the new and extended requirement of KBMSs and propose possible solutions for improving the evaluation efficiency of user submitted requests. Finally, we discuss the two alternative evaluation strategies for ...