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    . |01.02 : Data-base Management Subsystem            .
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      Research  in the  area of  Artificial Intelligence
    in  the  60's  of  the  20th  Century  on  field  of
    Computer Language  Processing introduced one  of the
    first programs  that took question on  the input and
    provided resulting answer on the output.
    
      There  were   many  systems  developed   for  this
    purpose.  Simmons  in   1965  (Simmons,  1965)  gave
    example  of  15  systems.  They  were  divided  into
    3  groups  according  to  the  inner  structure  and
    processing.  It   was  list-structured,  data-based,
    graphic data-based, text based and inferential.
    
      He also  described the  data-based question-answer
    systems  in the  early development  phase. Basis  of
    these programs were  translation of natural language
    sentences  into  the   symbols.  Processing  of  the
    symbols used formal logic implementation.
    
      One  of  the  possible implementation  for  symbol
    processing is  the system with data  basis. The base
    was represented using the list of symbols structure.
    Example  of such  system  was SAD  SAM. The  acronym
    stands  for Sentence  Appraiser  and Diagrammer  and
    Semantic Analysing Machine.  This program had simple
    English language  sentences on the input  and it was
    able  to  extract  atomic  data  from  it.  Sentence
    was analyzed  and stored  into it's  knowledge base.
    Primary usage  of SAD  SAM program was  the language
    analysis.  The system  was able  to determine  words
    classes.
    
      In  2nd  half  of   1960's  Theory  of  Relational
    Databases arrived. It was built on Deduction Systems
    foundation. The  Relational Concept  enabled advance
    in General Theory of Information Systems.
    
      Previous  development brought  the need  to repeat
    the implementation of  search algorithms, definition
    of inner facts form and propositional calculus.
    
    Among similar general  information system was system
    developed  by Bryant  (Bryant &  Semple, 1966).  His
    implementation  was different  from others  by exact
    separation of  algorithms for data  bases management
    and other parts of the system.
    
    It  was his  idea to  separate implementation  parts
    of  information system  in the  form of  stand-alone
    data-base management subsystem.
    
    
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