Information processing device, information processing method, and computer-readable recording medium

An information processing method for sampling data included in a database, the method comprising:

• in a case where, in the database, a sample attribute is set in one or more tables included in the database, the sample attribute being able to be designated as an attribute that indicates an element that constitutes a population, and a hash value is calculated from a value of the sample attribute included in the records included in the table in the database and is set as a level of the sample attribute in the records,
• (a) a step of designating the sample attribute as a target sample attribute based on input data received from outside, the target sample attribute indicating an element that constitutes a population in the sampling;
• (b) a step of specifying, as a sample condition, a condition that is to be satisfied by a sample created by the sampling, based on the input data;
• and
• (c) a step of
• selecting, as a target level, a level for determining a record that is to be included in the sample, and setting a level condition with use of the selected target level, the level condition being a condition that is to be satisfied by a record that is to be included in the sample,
• acquiring, from among the records included in the table, a record in which the level of the target sample attribute satisfies the level condition, and including the acquired record in the sample, and
• determining whether or not the sample satisfies the sample condition, and in a case of determining that the sample condition is not satisfied, changing the target level and again acquiring a record.

A non-transitory computer-readable recording medium having recorded thereon a program that includes instructions to be executed by a computer in order to cause the computer to sample data included in a database, the instructions causing the computer to execute:

• in a case where, in the database, a sample attribute is set in one or more tables included in the database, the sample attribute being able to be designated as an attribute that indicates an element that constitutes a population, and a hash value is calculated from a value of the sample attribute included in the records included in the table in the database and is set as a level of the sample attribute in the records,
• (a) a step of designating the sample attribute as a target sample attribute based on input data received from outside, the target sample attribute indicating an element that constitutes a population in the sampling;
• (b) a step of specifying, as a sample condition, a condition that is to be satisfied by a sample created by the sampling, based on the input data;
• and
• (c) a step of
• selecting, as a target level, a level for determining a record that is to be included in the sample, and setting a level condition with use of the selected target level, the level condition being a condition that is to be satisfied by a record that is to be included in the sample,
• acquiring, from among the records included in the table, a record in which the level of the target sample attribute satisfies the level condition, and including the acquired record in the sample, and
• determining whether or not the sample satisfies the sample condition, and in a case of determining that the sample condition is not satisfied, changing the target level and again acquiring a record.