In ER model, to represent entity or entity set, relationship or relationship set, attributes, aggregation, specialization, generalization etc. Following signs or symbols are used.
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if a SQL query is used inside another SQL query then this type of SQL query is called sub-query. यदि किसी SQL क्वेरी का उपयोग, किसी अन्य SQ...
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Characteristics / Advantages of Normalisation :- After successful completion of normalisation proces resultant relation R Shows following ...
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