Patent ID: 8898189
Filing Date: 2014-11-25
Classification: G05B,G06F

Abstract:
1. A database management method executed in a computer for managing a database, the computer having a processor and a memory connected to the processor, the database storing a plurality of pieces of compressed data which are compressed based on a given condition, the database management method including: a first step of analyzing, by the computer, a query for the database which is received from a client computer coupled to the computer; a second step of generating, by the computer, a first inquiry for searching the database for at least one of the plurality of pieces of compressed data, based on a result of the analysis of the received query; a third step of generating, by the computer, a second inquiry for executing a search of a plurality of pieces of time-series data obtained from the at least one of the plurality of pieces of compressed data, which is a response result of the first inquiry, based on the result of the analysis of the received query; a fourth step of issuing, by the computer, the first inquiry to the database and obtaining the at least one of the plurality of pieces of compressed data from the database as the response result of the first inquiry; a fifth step of obtaining, by the computer, the plurality of pieces of time-series data by decompressing the at least one of the plurality of pieces of compressed data which has been obtained as the response result of the first inquiry; a sixth step of executing, by the computer, the second inquiry for the obtained plurality of pieces of time-series data; a seventh step of extracting, by the computer, a plurality of pieces of any data from the obtained plurality of pieces of time-series data, based on a response result of the second inquiry; and an eighth step of generating, by the computer, an output result by extracting data to be output to the client computer from the plurality of pieces of any data which has been extracted in the seventh step.