{ "Columns":[ { "Name":"TreeId", "Multiplicity":"1", "Type":"Long" }, { "Name":"TreeNodeId", "Multiplicity":"1", "Type":"Long" }, { "Name":"time", "Multiplicity":"1", "Type":"DateTime" }, { "Name":"value", "Multiplicity":"1", "Type":"Double" } ], "Key":[ "TreeId", "TreeNodeId", "time" ], "Indexes":[ { "Name":"index_1", "Columns":[ "time" ] }, { "Name":"index_2", "Columns":[ "TreeId", "TreeNodeId", "time" ] } ] }