Direct call threaded code

Details Direct call threaded code Direct call threaded code

2011-07-05

2011-07-05

Breene, John (Department: 2162)

Data processing: database and file management or data structures

Database and file access

Query optimization

C707S716000, C707S718000, C717S128000, C717S129000, C717S140000, C717S141000

Reexamination Certificate

active

07974968

ABSTRACT:
A pre-pass and direct call mechanism which replaces the interpreter. The mechanism moves static decisions out of the repeated runtime path, into a pre-pass operation. Advantageously, the mechanism reduces runtime overhead, and improves overall performance of the DBMS during runtime, while maintaining the considerable investment in opcode generation and plan representation, already invested in the implementation of the DBMS.

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