A ____________ contains the values for all the fields that belong to a single person or an entit
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The entity relationship (ER) data model has existed for over 35 years.They are what other tables are based on. They typically have a one to many relationship. ... Derived attributes are attributes that contain values calculated
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An object is placed at a distance of 40 cm in front of a concave mirror of focal length 20 cm. Determine the ratio of the size of the image and the size of object.
Since, object is always placed in front of the mirror hence object distance is taken as negative. Since, the centre of curvature and focus lie in front
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