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is this a well designed table?

  1. #1
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    is this a well designed table?

    I am going to record student’s scores in a table like the following :
    Student names are looked up from student_list table and subjects from subject_list table.

    students_cores table:

    ID, studentname, subject, score

    1, john, mathematics, 80
    2, john, physics, 87
    3, john, history, 75
    4, john, biology, 90
    5, john, chemistry, 73
    6, john, mathematics, 84
    7, john, literature, 69
    8, Jack, mathematics, 79
    9, Jack, physics, 58
    10, Jack, history, 80
    11, Jack, biology, 93
    12, Jack, chemistry, 79
    13, Jack, mathematics, 71
    14, Jack, literature, 76
    .
    .
    .
    .
    Is it a good idea to have the above table? Is there a wiser way to record each student record for a given subject?
    thank you

  2. #2
    Forum Moderator AliGW's Avatar
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    Re: is this a well designed table?

    The idea is right - one row per record - however, the linking field between the master student list and the results list should be an ID number (the primary ID in the student table), not the name.
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    Forum Expert torachan's Avatar
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    Re: is this a well designed table?

    Arrange them within a table format as per attachment
    this presumes you are going to do some sort of analysis on the results.
    Attached Files Attached Files

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    Forum Moderator AliGW's Avatar
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    Re: is this a well designed table?

    Arrange them within a table format as per attachment
    This is really BAD advice, sorry.

    In relational databases, all tables should have one row per record. Matrix tables should NEVER be used.

    All participants: this is an ACCESS query!
    Last edited by AliGW; 04-18-2020 at 11:43 AM.

  5. #5
    Forum Expert torachan's Avatar
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    Re: is this a well designed table?

    My apologies I did not notice 'Access'
    As noted by @AliGW if this is RDMS then cross link provision needs to be made to the primary keys of the other two tables.

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    Forum Moderator alansidman's Avatar
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    Re: is this a well designed table?

    Here is a great read on Data Normalization and Data Base Design.
    Attached Files Attached Files
    Alan עַם יִשְׂרָאֵל חַי


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