ScholarMatic: Explanation & Answer
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September 19, 2020[Solution] Database Systems
Computer Science Special Offer Order! by Professor Shamz
Database Systems
CMP320Homework
1Answer the following questions:
1.5) Describe twodifferent types of database end users? Discuss the main activities of each.
1.6) Discuss two of the capabilities that should be provided by a DBMS.
1.9) What is the difference between controlled and uncontrolled redundancy?
2.3)What is the difference between a database schema and a database state?
2.6) What is the difference between procedural and nonprocedural DMLs?
2.9) What is the difference between the two-tier and three-tier client/server architectures?
5.4)What is the difference between a key and a superkey?
5.8) Discuss the entity integrity and referential integrity constraints. Why is each considered important?
5.11) Suppose that each of thefollowing Update operations is applied directly to the database state shown in Figure 5.6(shown below). Discuss all integrity constraints violated by each operation, if any, and the different ways of enforcing these constraints.
a. Insert into EMPLOYEE.
b. Insert into PROJECT.
c. Insert into DEPARTMENT.
d. Insert into WORKS_ON.
e. Insert into DEPENDENT.
f. Delete the WORKS_ON tuples with Essn = ?333445555?.
g. Delete the EMPLOYEE tuple with Ssn = ?987654321?.
h. Delete the PROJECT tuple with Pname = ?ProductX?.
i. Modify the Mgr_ssn and Mgr_start_date of the DEPARTMENT tuple with Dnumber = 5 to ?123456789? and ?2007-10-01?, respectively.
j. Modify the Super_ssn attribute of the EMPLOYEE tuple with Ssn = ?999887777? to ?943775543?.k. Modify the Hours attribute of the WORKS_ON tuple with Essn = ?999887777? and Pno = 10 to ?5.0?.
Database Homework
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[Solution] Introduction to Research Proposals[Solution] Criminal Justice Statistics
ScholarMatic: Explanation & Answer
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