mysql - Meaning of "n:m" and "1:n" in database design -


डेटाबेस डिजाइन में n: m और 1: n क्या मतलब है?

क्या उसके पास कुंजियों या रिश्तों के साथ कुछ भी नहीं है?

M: n का उपयोग कई-से-कई रिश्ते (दूसरे पर m वस्तुओं को दूसरे पर n से संबंधित करने के लिए किया जाता है), जबकि 1: n एक-से-कई रिश्ते ( 1 दूसरी ओर n से संबंधित दूसरी ओर वस्तु) को संदर्भित करता है।

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