The ________ database is the oldest database model and has a rigid structure; it was used with mainframes in the 1970s.Better database models have replaced it in modern database systems.

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The Answer of The ________ database is the oldest database model and has a rigid structure; it was used with mainframes in the 1970s.Better database models have replaced it in modern database systems.

The ________ Database Is the Oldest Database Model and Has