1. Dr. Zhen Jiang Computer Science Department West Chester University
CSC 545: Database Systems
Dr. Zhen Jiang
Computer Science Department
West Chester University

2. Class information
Website

3. Why this class? Job hunting Something help you to stand out!
WCU graduated, Database, Software Engineering, …
vs.
Undergraduates
UPenn, Temple, Drexel, …
Something help you to stand out!

4. Research project
Critical thinking, communication, well-plan, etc.
Real competition, deadline, pressure
More realistic system, complex programming, for instance,
Student opportunities:
Sponsorship
NSF, NSA, etc
Industry interns

5. No pain, no gain
Need to handle those things coming from pressure: frustration, upset, madness, etc.
Looking for solution, not excuse.
Deadline!

6. Class website (including ppt)+ google search
Hands-on experience
Group discussion
Happy ending!

7. How do you like to be introduced? No pain, no gain Happy ending
Need to handle those things coming from pressure: frustration, upset, madness, etc.
Looking for solution, not excuse.
Deadline!

8. Where do you find data?
Share the experience of data processing: Word, Power point, Excel, IE, and etc.

9. Word <Insert> <Copy> & <Paste> <Ctrl><p>
<Symbol> ≥ 
<Copy> & <Paste>
<Ctrl> <c>  <Ctrl> <v>
<PrtSc> & <Alt> <PrtSc>  <Ctrl> <v>
<Ctrl><p>
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10. Power Point ! <Insert> <Date and Time>
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11. <Slide Show>
<Custom Animation>, <Add Effect>, <Motion Path> !
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12. Excel
Document resource:
=average(c6:c28)
Another well used function: SUM !
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13. ! <Insert> <Chart>
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14. <view> <freeze panes>
B2, $b$2

15. Data preparation

18. IE
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19. Summer Training on Computer Science, WCU

20. Summer Training on Computer Science, WCU

21. What do we do with data? Exercise 1
Data curving 2D
3D surface
Data extraction and recreation
Data search

22. More efficient manner to store, search, and display the data!
Conditional search
Wildcard match

23. Database Systems & Access
Is PC more popular?
What is you laptop brand?
What OS is installed, Linux or Windows?
Access

24. Access
<Start>  <All program>  …  <Microsoft Office Access 2007>

26. Input each piece of information manually

28. √

29. Design view to change the format type (especially useful for currency and date input)

31. Database Systems & Access
Page: AC14
Page: AC44
Exercise 1:

32. Creating a report
Report wizard, page AC50-AC56

33. Input & Output
Load/import data from external resource, Page AC211

34. Plain text file

41. Excel file (xls or xlsx)

44. Querying
Creation (Query wizzard)
Save
Use

45. Wildcard (*, ?), page AC87
Use criteria for a field not included in the result list, page AC88
Parameter Query, page AC89
Comparison Operator, page AC94
Compound criterion (AND, OR), page AC 95
Sorting, page AC97
Omitting duplicates, page AC 100
Multiple keys (high priority from left to right), page AC101
Top-value query, page AC 102
Multiple table, page AC103
Calculated field, page AC 113
Calculating Statistics and Aggregate Values, page AC 117

48. Show the name and age and salary of all employees who are younger than 25.

49. Double click the items to include in the list

53. Add criteria to meet the certain requirement

55. Datasheet view
Design view

56. Comparison Operator, such as <25 in age field
Wildcard (*, ?), such as “B*”, “*m*”, “*s”, and “S????” in LName field
Compound criterion (AND => same row, OR => different rows)
Sorting (By default, it is sorted in ascending order)
Use criteria for a field not included in the result list, disabled show property
Multiple keys (high priority from left to right)
Top-value query, “return” in top design view
Parameter Query, “[ ]” in dnum field, or any name that has not been used as column names (possiblily a misspelled column name)
Calculated field, “zoom” in shortcut menu (e.g., “Total Amount:[Amount Paid]+[Current Due]”)
Calculating Statistics (built-in statistics)
Multiple table, share field
Aggregations (statistics with “group by”)

57. Show the Enum, name, salary of all employees whose names have 5 letters.

63. Show the name, Enum ,salary, and age of all employees with a salary > $40,000 AND younger than 25

69. Show the Enum of all employees sorted by salary (i. e
Show the Enum of all employees sorted by salary (i.e., in the ascending order by default)

70. Hidden column for criteria (not displayed in the list)

71. Q4
Enum
E909
E303
E404
E222
E202
E101
E707
E606
E505
E808

72. Show the Enum of all employees sorted by salary (in ascending order) and LName (in descending alphabetical order)

73. Which? Q4 Enum E909 E303 E404 E222 E202 E101 E707 E606 E505 E808 Q4

74. List top 5 high paid employees.

77. List the LName of all employees in the department (Dnum) entered by the user.

85. List the LName of all employees with a new column labeled “hiring age”, which has a value by subtracting the years of working (wYears) from the current age (age).

91. List the max, min, and average of salary for all employees.

98. Multiple table (AC 105-109) Emp Dept Enum LName age salary Dnum wYears
Jones 45
$56,000.00
D25 12
E202
Anders 66
$46,000.00
D22 25
E303
Smith 34
$25,000.00 9
E404
Rivera 22
$30,000.00 1
E505
Brown
$80,000.00 17
E606
Caldwell 52
$70,000.00
D28 20
E707
Stiles 44
$65,000.00 11
E808
Walker 48
$90,000.00 21
E909
Hartman
E222
Carter 29
$35,000.00 3
Dept
Dnum
Dname
City
D22
Web WC
D25
Databases NY
D28
Software LA

99. Multiple tables and aggregations (statistics with group)
Exercise 2:

100. For each employee, print out his/her name and the department name.

107. Calculation of aggregate values (aggregations, statistics with grouping)

108. Show the average age (label as “average age”) and average salary (label as “average salary”) for all employees

111. For all employees under 30, show a count of these employees and their average salary.

115. Show the max, min and average age for all employees in Dept “Software”

116. Multiple tables are needed!

119. Still sounds incorrect!

121. For all employees in department “D22” or “D28”, show a count of these employees, their average age, and maximum salary

127. What will be the result?

129. For each department list avg, max and min age, along with a count of employees in each department.

134. For each department find a count and average salary for all employees younger than 40.

137. For each department with an average salary of > list the dnums, employee count for these departments.

140. For each department with less than 4 employees, show the average age and number of employees.

143. For each department with more than 2 people over 40 list deptNum, and a count of these people.

146. Project 1
Submit accdb file.

147. Maintenance Record addition, page AC 144 Search, page AC 145
Record update, page AC 147
Record deletion, page AC 148
Filter, page AC 149