A weak entity is a column or collection of columns that could have been chosen as a primary key,but was not.
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Q1: The basic relationships among entities are: one-to-many,
Q9: A foreign key is a column or
Q10: In an E-R diagram,a dashed line represents
Q11: The first step in creating a user
Q13: When provided with a user view or
Q14: You create a many-to-many relationship by creating
Q16: In a one-to-many relationship, the primary key
Q16: There are two types of primary keys
Q17: Nulls are used when a value is
Q19: In an entity-relationship diagram, rectangles represent foreign
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