Method for retrieving time-series data sets from a process database system of an industrial plant

A computing device for retrieving time-series data sets from a process database system of an industrial plant, wherein a respective time-series data set is associated with a respective tag and comprises a respective series of time-dependent data values, wherein the computing device comprises:

• a query providing unit for providing request queries for requesting time-dependent data values of the time-series data sets, wherein a respective request query indicates respective requested time-dependent data values by indicating a) a respective request tag associated with a respective time-series data set and b) a respective start time and a respective end time of the time-dependent data values of the respective time-series data set associated with the respective request tag,
• a responsiveness score providing unit for providing responsiveness scores of the process database system for the provided request queries, wherein a respective responsiveness score indicates an expected amount of time-dependent data values of the respective tag that are retrieved from the process database system during a predetermined time period and the responsiveness score is determined from at least one of:
• (i) a synchronization state of the respective request tag, (ii) a data density of a time-series data set associated with the respective tag, and (iii) a measured amount of time-dependent data values associated with the respective request tag that were retrieved during a predetermined time period in a prior retrieval, and wherein responsiveness scores determined by measurement are stored in a persistency databases associated with the respective tags for use with future request queries,
• a bulk query generating unit for generating bulk queries based on the responsiveness scores such that a) a respective bulk query comprises queries for requesting at least a part of the requested time-dependent data values of one or more of the provided request queries and b) all requested time-dependent data values of all provided request queries are requested by the bulk queries,
• a transmitting unit for:
• identifying a plurality of parallel processing lanes of the process database system, wherein the plurality of parallel processing lanes are each associated with a current capacity, and
• transmitting one or more portions of the bulk queries to a parallel processing lane of the plurality of the parallel processing lanes of the process database system based on the current capacity of the parallel processing lane,
• and
• a retrieving unit for retrieving time-dependent data values from the process database system in response to the bulk queries.