Topological Transformation Approaches to Database Query Processing

Topological Transformation Approaches to Optimizing TCAM-Based Packet Processing Systems

Advance Database Aggregation Query Processing

The aggregation query is an important but costly operation in database management systems. In the worst case, to compute an aggregate, all tuples in a database needs to be examined. However, in many applications (on-line analysis, etc.), we need to compute the aggregates very fast. In the Ph.D. research, we focus on devising specialized indices for the box-aggregation query and its relatives. O...

Architecture-Sensitive Database Query Processing

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Adaptive Query Processing in Point-Transformation Schemes

Point-transformation schemes transform multidimensional points to one-dimensional values so that conventional access methods can be used to index multidimensional points, enabling convenient integration of multidimensional query facilities into complex transactional database management systems. However, in high-dimensional data spaces, the computational complexity of the required query transfor...

Query Processing Techniques in the Team-Oriented Database Query Language

In this paper, we introduce the concept “team” and incorporate the team query into data language SQL. Existing relational query languages use tuple variables of tables to specify required data. Queries that are expressed by these languages are used to get all the data which satisfy the specified conditions. While a team variable represents a subset of a table, a team query is to retrieve all th...