The Power and Elegance of EVT-Maintained Aggregates.

The article offers information on relational database indexing technology from International Business Machines Corp. (IBM) named Encoded Vector Index (EVI). Definition and usage of indexing in a database is explained which is needed in business applications and allow users to access vital information without stressing the system. Also discussed are the situations where EVI should be used, which include full table scanning, identifying rows and tables, and using EVI symbol table.