identification of the three main categories of time involved in database applications: user-defined time, valid time and transaction … time, some relevant solutions for their implementation are discussed, mainly from the point of view of database …

increases in transaction times. Based on our sample of 42 observations, we found that the pure transaction time for making … change did actually increase, while queuing time increased only in small shops. This increase in transaction time represented …

study the properties of the price process on two different time scales, namely, transaction time where prices are sampled … and theoretical results indicate that the return dynamics in transaction time are very different from those in tick time … find that tick time sampling is superior to transaction time sampling in terms of mean-squared-error, especially when the …

should be tied to the rate at which transactions occur. To accomplish this, he made a distinction between transaction time … paper studies the implications of absence of arbitrage in economies where: (i) trade takes place in transaction time, (ii …) there is a single state variable whose transaction-time price path is binomial, (iii) there are risk-free bonds with …