An investigation of temporal databases from foundation to   mplementation
{'Code': '05020000', 'Directorate': {'Abbreviation': 'CSE', 'LongName': 'Direct For Computer & Info Scie & Enginr'}, 'Division': {'Abbreviation': 'IIS', 'LongName': 'Div Of Information & Intelligent Systems'}}
{'SignBlockName': 'Maria Zemankova', 'PO_EMAI': None, 'PO_PHON': None}
The existing database systems treat only the current information in a           systematic manner.  The only information is either deleted or archived          and it can not be queried; if it has to be queried, the data is time            stamped in an ad hoc manner.  A temporal database incorporates the              concept of time at the logical level of design.                                                                                                                 Our recent work cleanly generalized the existing relational approaches          to temporal databases.  Our new model allows an dimensional time stamps.        The two dimensional case seems to be a promising building block for a           futuristic general purpose database system, in which, in addition to            querying the current and the past states of a databases, one may also           query the errors in the past states.  Thus it is a profound application         of temporal databases to databases as a whole.                                                                                                                  To harness the potential of our model, it needs further study and its           applications need to be consolidated.  We would first strengthen the            foundations of the relational and other approaches to temporal database.        We will then advance the relational, object oriented and the deductive          approaches to temporal databases.
{'FirstName': 'Shashi', 'LastName': 'Gadia', 'PI_MID_INIT': 'K', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Shashi K Gadia', 'EmailAddress': 'gadia@cs.iastate.edu', 'NSF_ID': '000313609', 'StartDate': '07/15/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Iowa State University', 'CityName': 'AMES', 'ZipCode': '500112103', 'PhoneNumber': '5152945225', 'StreetAddress': '1350 BEARDSHEAR HALL', 'StreetAddress2': '515 MORRILL ROAD', 'CountryName': 'United States', 'StateName': 'Iowa', 'StateCode': 'IA', 'CONGRESSDISTRICT': '04', 'CONGRESS_DISTRICT_ORG': 'IA04', 'ORG_UEI_NUM': 'DQDBM7FGJPC5', 'ORG_LGL_BUS_NAME': 'IOWA STATE UNIVERSITY OF SCIENCE AND TECHNOLOGY', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '6855', 'Text': 'INFORMATION & KNOWLEDGE MANAGE'}
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