What does it mean to say that a database displays both entity integrity and referential integrity? And why entity integrity and referential integrity important in a database? Provide an application example to support your discussion.

1 Read chapters 2 and 3 textbook and review reputable IGU online library resources and journals and discuss: Advantages and Disadvantages of Relational Model.

2 Read chapter 3 and reputable journals/articles and IGU online library resources and describe the following relational operators: Union, Project, Intersect and Join. Please provide a real-world application example for each of these operators.

3 Read chapter 3 of textbook and review reputable IGU online library resources and journals and discuss:

What does it mean to say that a database displays both entity integrity and referential integrity? And why entity integrity and referential integrity important in a database? Provide an application example to support your discussion.

question four is on attachment down there.

 

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