Method and apparatus for replicating data

A node apparatus of a database, comprising:

• a data receiving unit receiving data;
• a data storing unit storing data and indices in a table region including a plurality of data regions and a plurality of index regions;
• and
• a replicating unit merging the plurality of index regions with one another to be one index region and replicating a table region including the plurality of data regions and the one index region to other nodes,
• wherein the merging is performed by modifying a relation identifier so as to indicate the plurality of index regions, and
• the replicating is performed by using the relation identifier indicating the plurality of index regions.

A computer-readable non-transitory recording medium in which programs for performing a method for replicating data by a node apparatus constituting a database system in a time series database including a master node and one or more data nodes are recorded, the method for replicating data including:

• storing data and indices in a table region including a plurality of data regions and a plurality of index regions;
• merging the plurality of index regions with each other to be one index region;
• and
• replicating a table region including the plurality of data regions and the one index region to other nodes,
• wherein the merging is performed by modifying a relation identifier so as to indicate the plurality of index regions, and
• the replicating is performed by using the relation identifier indicating the plurality of index regions.