Schema evolution is the ability of the database to respond to changes in the real world by allowing the schema to evolve. The multidimensional conditionally evolving schema(MD-CES) is a conceptual model for conditional schema changes, which modify the schema of those tuples that satisfy the change condition. The MD-CES is lossless and preserves schemas, but has an exponential space complexity. ...

We consider the problem of measuring statistical evidence against a composite null hypothesis. base our approach on concept an E-value, which measures by multiplication factor achieved engaging in bets that are fair under null. adopt log-optimality criterion for choosing among all possible E-values, was considered earlier fixed sample size. extend these ideas to sequential testing optional stop...