DATABASE SERVER STORING PLURALITY OF VERSIONS OF DATA, AND DATABASE MANAGEMENT METHOD

摘要

A database server includes a database capable of storing multi-version data with respect to various time-series data, and a database management server that manages the database. The database management server includes search means capable of designating a merge policy defining a policy whether mixing of the multi-version data is acceptable in addition to a search condition of the database. The search means generates a result of merging of the multi-version data in the time range contained in the search condition as the data acquisition history so as to be recorded in the database.

主权项

1. A database server comprising:
a database capable of storing multi-version data with respect to various time-series data; and a database management server for managing the database, wherein the database management server includes search means capable of designating a merge policy defining a policy whether mixing of the multi-version data is acceptable in addition to a search condition of the database, and the search means generates a result of merging the multi-version data in a time range contained in the search condition as a data acquisition history based on the designated merge policy, and records the data acquisition history in the database.