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in this session we are discussing ear diagrams and different symbols used in that so there are so many symbols are there which can be used in at ear diagram we shall go one by one through this particular diagrams see the first one is the entity set which will be denoted by one rectangle and the entity will be written within that particular rectangle so this is a rectangle and the entity name will be written within the rectangle feels weak entity set weak entity set dont have any kind of primary key it does not have any primary key it is having a partial key we shall have a separate video where we shall discuss we can detect more into details relationship set will be denoted by diamond and the relationship set name will be written inside I didnt define the relationship will be denoted by this double the amount and this identifying relationship name will be retained inside in case of primary key we know that attribute will be enclosed within ellipse and in case of primary key it will
