Much data on the web is available in hidden databases. Users browse their contents by
sending search queries to form-based interfaces or APIs. Yet, hidden databases just return …

A tremendous amount of data is concealed behind form-based interfaces that communicate
any user query to their data store to deliver query answer. These interfaces limit the number …

Analytic function, also called window function, is to query the aggregation of data over a
sliding window. For example, a simple query over the online stock platform is to return the …