5 question about database
·please answer these questions for me
Question 1
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What is a database? What is a database management system (DBMS)? What functions does a DBMS perform? |
· Question 2
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What are business rules, what is their source and why are they crucial? |
· Question 3
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What is a key?What is aprimary key and foreign key? Discuss their use and importance inthe relational model? |
· Question 4
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What is normalization? When is a table in 1NF? When is a table in 2NF? When is a table in 3NF? |
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· Question 5
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Using the model below, describe the relationship and connection / cardinality between: a. STORE and ORDER b. STORE and EMPLOYEE c. EMPLOYEE and DEPENDENT d. ORDER and ORDER_LINE e. PRODUCT and ORDER_LINE |
and u can use this Power point slides to find the answers :
Review.ppt
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