Question: (1) An entity set does not have sufficient attributes to form a primary key is a weak entity set. (2) In a E-R diagram,

(1) An entity set does not have sufficient attributes to form a

(1) An entity set does not have sufficient attributes to form a primary key is a weak entity set. (2) In a E-R diagram, attributes are represented by ellipse. (3) In case of entity integrity, the primary key must be not NULL. (4) Related fields in a database are grouped to form a data record. How many of the following sentences are correct? Setiiniz cevabn iaretlendiini grene kadar bekleyiniz. 6,00 Puan A U D E 0 1 2 3 4

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