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Which of the following is a disadvantage of the hierarchical data model? Group of answer choices It is not efficient with 1:M relationships. It does not have standards. It does not promote data integrity. It does not promote data sharing.

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  1. 28 July, 15:41
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    It is not efficient with relationships

    Explanation:

    Developed in the 1960s, it was the pioneer mainFrame database system which uses an upside-down for structuring data. At the top of the tree is parent while the branches are the children. It is however not efficient with relationships as each child can only have one parent.
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