A Method of Schema Decompositions of HRDB Based on TempSQL Model with Temporal Restriction

According to the normalization theory on temporal relationship,a method of schema decompositions of relationship mode to HRDB based on TempSQL model is created.With the temporal restriction about simultaneity in a record and temporal coupling,HRDB is decomposed in terms of projection by properties set or time period in order to eliminate the redundancy and expansion of data.