Database structure
I have a database structure in the below format,
subjects table
subject_id subject_name
1 HTML
2 Java
chapters table
chapter_id chapter_name subject_id
1 Doctype 1
2 Intro to Java 2
tutorials table
tutorial_id tutorial_name chapter_id subject_id
1 Intro to doctype 1 1
2 Details of doctype 1 1
3 Intro to JVM 2 2
should subject_id be in tutorials table?
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