Technical Perspective: Ad Hoc Transactions: What They Are and Why We Should Care

Communications of the ACM 

Most database research papers are prescriptive. They identify a technical problem and show us how to solve it. Other papers follow a different path; they are descriptive rather than prescriptive. They tell us how data systems behave in practice and how they are actually used. They employ a different set of tools, such as surveys, software analyses, or user studies.