The relational data model was developed in the _____.
A) 1960s
B) 1970s
C) 1980s
D) 1990s
Correct Answer:
Verified
Q41: The relational model's foundation is a mathematical
Q42: The _ model was developed to allow
Q43: The _ model uses the term connectivity
Q44: A(n) _ is a relatively simple representation
Q45: A(n) _ is the conceptual organization of
Q47: The _ data model is said to
Q48: In _, a three-pronged symbol represents the
Q49: A(n) _ defines the environment in which
Q50: Which of the following is true of
Q51: Which of the following types of HDFS
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