To rate a data store is to compute a value that describes the performance of the data store with a database and a workload. A common performance metric of interest is the highest throughput provided by the data store given a pre-specified service level agreement such as 95% of requests observing a response time faster than 100 milliseconds. This is termed the action rating of the data store. Th...

A common approach to providing persistent storage for RDF is to store statements in a three-column table in a relational database system. This is commonly referred to as a triple store. Each table row represents one RDF statement. For RDF graphs with frequent patterns, an alternative storage scheme is a property table. A property table comprises one column containing a statement subject plus on...

Do store brands help differentiate a store to attract store loyal consumers? Or do they attract price sensitive cherry pickers who are not store loyal? To answer these questions empirically, the authors construct appropriate metrics of store brand loyalty and store loyalty, that do not impose mathematical relationships between the two variables—a problem with recent works in this area. Using da...